diff options
Diffstat (limited to 'arch/arm/mach-mx3')
-rw-r--r-- | arch/arm/mach-mx3/Kconfig | 13 | ||||
-rw-r--r-- | arch/arm/mach-mx3/Makefile | 4 | ||||
-rw-r--r-- | arch/arm/mach-mx3/clock.c | 1147 | ||||
-rw-r--r-- | arch/arm/mach-mx3/crm_regs.h | 401 | ||||
-rw-r--r-- | arch/arm/mach-mx3/devices.c | 180 | ||||
-rw-r--r-- | arch/arm/mach-mx3/iomux.c | 111 | ||||
-rw-r--r-- | arch/arm/mach-mx3/mx31ads.c | 14 | ||||
-rw-r--r-- | arch/arm/mach-mx3/mx31lite.c | 107 | ||||
-rw-r--r-- | arch/arm/mach-mx3/pcm037.c | 130 | ||||
-rw-r--r-- | arch/arm/mach-mx3/time.c | 148 |
10 files changed, 2105 insertions, 150 deletions
diff --git a/arch/arm/mach-mx3/Kconfig b/arch/arm/mach-mx3/Kconfig index 5fe8606cac08..db9431dee1b4 100644 --- a/arch/arm/mach-mx3/Kconfig +++ b/arch/arm/mach-mx3/Kconfig | |||
@@ -8,5 +8,18 @@ config MACH_MX31ADS | |||
8 | Include support for MX31ADS platform. This includes specific | 8 | Include support for MX31ADS platform. This includes specific |
9 | configurations for the board and its peripherals. | 9 | configurations for the board and its peripherals. |
10 | 10 | ||
11 | config MACH_PCM037 | ||
12 | bool "Support Phytec pcm037 platforms" | ||
13 | help | ||
14 | Include support for Phytec pcm037 platform. This includes | ||
15 | specific configurations for the board and its peripherals. | ||
16 | |||
17 | config MACH_MX31LITE | ||
18 | bool "Support MX31 LITEKIT (LogicPD)" | ||
19 | default n | ||
20 | help | ||
21 | Include support for MX31 LITEKIT platform. This includes specific | ||
22 | configurations for the board and its peripherals. | ||
23 | |||
11 | endmenu | 24 | endmenu |
12 | 25 | ||
diff --git a/arch/arm/mach-mx3/Makefile b/arch/arm/mach-mx3/Makefile index cbec997f332a..8b21abb71fb0 100644 --- a/arch/arm/mach-mx3/Makefile +++ b/arch/arm/mach-mx3/Makefile | |||
@@ -4,5 +4,7 @@ | |||
4 | 4 | ||
5 | # Object file lists. | 5 | # Object file lists. |
6 | 6 | ||
7 | obj-y := mm.o time.o | 7 | obj-y := mm.o clock.o devices.o iomux.o |
8 | obj-$(CONFIG_MACH_MX31ADS) += mx31ads.o | 8 | obj-$(CONFIG_MACH_MX31ADS) += mx31ads.o |
9 | obj-$(CONFIG_MACH_MX31LITE) += mx31lite.o | ||
10 | obj-$(CONFIG_MACH_PCM037) += pcm037.o | ||
diff --git a/arch/arm/mach-mx3/clock.c b/arch/arm/mach-mx3/clock.c new file mode 100644 index 000000000000..2f3635943e70 --- /dev/null +++ b/arch/arm/mach-mx3/clock.c | |||
@@ -0,0 +1,1147 @@ | |||
1 | /* | ||
2 | * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved. | ||
3 | * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de> | ||
4 | * | ||
5 | * This program is free software; you can redistribute it and/or | ||
6 | * modify it under the terms of the GNU General Public License | ||
7 | * as published by the Free Software Foundation; either version 2 | ||
8 | * of the License, or (at your option) any later version. | ||
9 | * This program is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
12 | * GNU General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU General Public License | ||
15 | * along with this program; if not, write to the Free Software | ||
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | ||
17 | * MA 02110-1301, USA. | ||
18 | */ | ||
19 | |||
20 | #include <linux/module.h> | ||
21 | #include <linux/spinlock.h> | ||
22 | #include <linux/delay.h> | ||
23 | #include <linux/clk.h> | ||
24 | #include <linux/err.h> | ||
25 | #include <linux/io.h> | ||
26 | #include <asm/arch/clock.h> | ||
27 | #include <asm/div64.h> | ||
28 | |||
29 | #include "crm_regs.h" | ||
30 | |||
31 | #define PRE_DIV_MIN_FREQ 10000000 /* Minimum Frequency after Predivider */ | ||
32 | |||
33 | static void __calc_pre_post_dividers(u32 div, u32 *pre, u32 *post) | ||
34 | { | ||
35 | u32 min_pre, temp_pre, old_err, err; | ||
36 | |||
37 | if (div >= 512) { | ||
38 | *pre = 8; | ||
39 | *post = 64; | ||
40 | } else if (div >= 64) { | ||
41 | min_pre = (div - 1) / 64 + 1; | ||
42 | old_err = 8; | ||
43 | for (temp_pre = 8; temp_pre >= min_pre; temp_pre--) { | ||
44 | err = div % temp_pre; | ||
45 | if (err == 0) { | ||
46 | *pre = temp_pre; | ||
47 | break; | ||
48 | } | ||
49 | err = temp_pre - err; | ||
50 | if (err < old_err) { | ||
51 | old_err = err; | ||
52 | *pre = temp_pre; | ||
53 | } | ||
54 | } | ||
55 | *post = (div + *pre - 1) / *pre; | ||
56 | } else if (div <= 8) { | ||
57 | *pre = div; | ||
58 | *post = 1; | ||
59 | } else { | ||
60 | *pre = 1; | ||
61 | *post = div; | ||
62 | } | ||
63 | } | ||
64 | |||
65 | static struct clk mcu_pll_clk; | ||
66 | static struct clk mcu_main_clk; | ||
67 | static struct clk usb_pll_clk; | ||
68 | static struct clk serial_pll_clk; | ||
69 | static struct clk ipg_clk; | ||
70 | static struct clk ckih_clk; | ||
71 | static struct clk ahb_clk; | ||
72 | |||
73 | static int _clk_enable(struct clk *clk) | ||
74 | { | ||
75 | u32 reg; | ||
76 | |||
77 | reg = __raw_readl(clk->enable_reg); | ||
78 | reg |= 3 << clk->enable_shift; | ||
79 | __raw_writel(reg, clk->enable_reg); | ||
80 | |||
81 | return 0; | ||
82 | } | ||
83 | |||
84 | static void _clk_disable(struct clk *clk) | ||
85 | { | ||
86 | u32 reg; | ||
87 | |||
88 | reg = __raw_readl(clk->enable_reg); | ||
89 | reg &= ~(3 << clk->enable_shift); | ||
90 | __raw_writel(reg, clk->enable_reg); | ||
91 | } | ||
92 | |||
93 | static void _clk_emi_disable(struct clk *clk) | ||
94 | { | ||
95 | u32 reg; | ||
96 | |||
97 | reg = __raw_readl(clk->enable_reg); | ||
98 | reg &= ~(3 << clk->enable_shift); | ||
99 | reg |= (1 << clk->enable_shift); | ||
100 | __raw_writel(reg, clk->enable_reg); | ||
101 | } | ||
102 | |||
103 | static int _clk_pll_set_rate(struct clk *clk, unsigned long rate) | ||
104 | { | ||
105 | u32 reg; | ||
106 | signed long pd = 1; /* Pre-divider */ | ||
107 | signed long mfi; /* Multiplication Factor (Integer part) */ | ||
108 | signed long mfn; /* Multiplication Factor (Integer part) */ | ||
109 | signed long mfd; /* Multiplication Factor (Denominator Part) */ | ||
110 | signed long tmp; | ||
111 | u32 ref_freq = clk_get_rate(clk->parent); | ||
112 | |||
113 | while (((ref_freq / pd) * 10) > rate) | ||
114 | pd++; | ||
115 | |||
116 | if ((ref_freq / pd) < PRE_DIV_MIN_FREQ) | ||
117 | return -EINVAL; | ||
118 | |||
119 | /* the ref_freq/2 in the following is to round up */ | ||
120 | mfi = (((rate / 2) * pd) + (ref_freq / 2)) / ref_freq; | ||
121 | if (mfi < 5 || mfi > 15) | ||
122 | return -EINVAL; | ||
123 | |||
124 | /* pick a mfd value that will work | ||
125 | * then solve for mfn */ | ||
126 | mfd = ref_freq / 50000; | ||
127 | |||
128 | /* | ||
129 | * pll_freq * pd * mfd | ||
130 | * mfn = -------------------- - (mfi * mfd) | ||
131 | * 2 * ref_freq | ||
132 | */ | ||
133 | /* the tmp/2 is for rounding */ | ||
134 | tmp = ref_freq / 10000; | ||
135 | mfn = | ||
136 | ((((((rate / 2) + (tmp / 2)) / tmp) * pd) * mfd) / 10000) - | ||
137 | (mfi * mfd); | ||
138 | |||
139 | mfn = mfn & 0x3ff; | ||
140 | pd--; | ||
141 | mfd--; | ||
142 | |||
143 | /* Change the Pll value */ | ||
144 | reg = (mfi << MXC_CCM_PCTL_MFI_OFFSET) | | ||
145 | (mfn << MXC_CCM_PCTL_MFN_OFFSET) | | ||
146 | (mfd << MXC_CCM_PCTL_MFD_OFFSET) | (pd << MXC_CCM_PCTL_PD_OFFSET); | ||
147 | |||
148 | if (clk == &mcu_pll_clk) | ||
149 | __raw_writel(reg, MXC_CCM_MPCTL); | ||
150 | else if (clk == &usb_pll_clk) | ||
151 | __raw_writel(reg, MXC_CCM_UPCTL); | ||
152 | else if (clk == &serial_pll_clk) | ||
153 | __raw_writel(reg, MXC_CCM_SRPCTL); | ||
154 | |||
155 | return 0; | ||
156 | } | ||
157 | |||
158 | static unsigned long _clk_pll_get_rate(struct clk *clk) | ||
159 | { | ||
160 | long mfi, mfn, mfd, pdf, ref_clk, mfn_abs; | ||
161 | unsigned long reg, ccmr; | ||
162 | s64 temp; | ||
163 | unsigned int prcs; | ||
164 | |||
165 | ccmr = __raw_readl(MXC_CCM_CCMR); | ||
166 | prcs = (ccmr & MXC_CCM_CCMR_PRCS_MASK) >> MXC_CCM_CCMR_PRCS_OFFSET; | ||
167 | if (prcs == 0x1) | ||
168 | ref_clk = CKIL_CLK_FREQ * 1024; | ||
169 | else | ||
170 | ref_clk = clk_get_rate(&ckih_clk); | ||
171 | |||
172 | if (clk == &mcu_pll_clk) { | ||
173 | if ((ccmr & MXC_CCM_CCMR_MPE) == 0) | ||
174 | return ref_clk; | ||
175 | if ((ccmr & MXC_CCM_CCMR_MDS) != 0) | ||
176 | return ref_clk; | ||
177 | reg = __raw_readl(MXC_CCM_MPCTL); | ||
178 | } else if (clk == &usb_pll_clk) | ||
179 | reg = __raw_readl(MXC_CCM_UPCTL); | ||
180 | else if (clk == &serial_pll_clk) | ||
181 | reg = __raw_readl(MXC_CCM_SRPCTL); | ||
182 | else { | ||
183 | BUG(); | ||
184 | return 0; | ||
185 | } | ||
186 | |||
187 | pdf = (reg & MXC_CCM_PCTL_PD_MASK) >> MXC_CCM_PCTL_PD_OFFSET; | ||
188 | mfd = (reg & MXC_CCM_PCTL_MFD_MASK) >> MXC_CCM_PCTL_MFD_OFFSET; | ||
189 | mfi = (reg & MXC_CCM_PCTL_MFI_MASK) >> MXC_CCM_PCTL_MFI_OFFSET; | ||
190 | mfi = (mfi <= 5) ? 5 : mfi; | ||
191 | mfn = mfn_abs = reg & MXC_CCM_PCTL_MFN_MASK; | ||
192 | |||
193 | if (mfn >= 0x200) { | ||
194 | mfn |= 0xFFFFFE00; | ||
195 | mfn_abs = -mfn; | ||
196 | } | ||
197 | |||
198 | ref_clk *= 2; | ||
199 | ref_clk /= pdf + 1; | ||
200 | |||
201 | temp = (u64) ref_clk * mfn_abs; | ||
202 | do_div(temp, mfd + 1); | ||
203 | if (mfn < 0) | ||
204 | temp = -temp; | ||
205 | temp = (ref_clk * mfi) + temp; | ||
206 | |||
207 | return temp; | ||
208 | } | ||
209 | |||
210 | static int _clk_usb_pll_enable(struct clk *clk) | ||
211 | { | ||
212 | u32 reg; | ||
213 | |||
214 | reg = __raw_readl(MXC_CCM_CCMR); | ||
215 | reg |= MXC_CCM_CCMR_UPE; | ||
216 | __raw_writel(reg, MXC_CCM_CCMR); | ||
217 | |||
218 | /* No lock bit on MX31, so using max time from spec */ | ||
219 | udelay(80); | ||
220 | |||
221 | return 0; | ||
222 | } | ||
223 | |||
224 | static void _clk_usb_pll_disable(struct clk *clk) | ||
225 | { | ||
226 | u32 reg; | ||
227 | |||
228 | reg = __raw_readl(MXC_CCM_CCMR); | ||
229 | reg &= ~MXC_CCM_CCMR_UPE; | ||
230 | __raw_writel(reg, MXC_CCM_CCMR); | ||
231 | } | ||
232 | |||
233 | static int _clk_serial_pll_enable(struct clk *clk) | ||
234 | { | ||
235 | u32 reg; | ||
236 | |||
237 | reg = __raw_readl(MXC_CCM_CCMR); | ||
238 | reg |= MXC_CCM_CCMR_SPE; | ||
239 | __raw_writel(reg, MXC_CCM_CCMR); | ||
240 | |||
241 | /* No lock bit on MX31, so using max time from spec */ | ||
242 | udelay(80); | ||
243 | |||
244 | return 0; | ||
245 | } | ||
246 | |||
247 | static void _clk_serial_pll_disable(struct clk *clk) | ||
248 | { | ||
249 | u32 reg; | ||
250 | |||
251 | reg = __raw_readl(MXC_CCM_CCMR); | ||
252 | reg &= ~MXC_CCM_CCMR_SPE; | ||
253 | __raw_writel(reg, MXC_CCM_CCMR); | ||
254 | } | ||
255 | |||
256 | #define PDR0(mask, off) ((__raw_readl(MXC_CCM_PDR0) & mask) >> off) | ||
257 | #define PDR1(mask, off) ((__raw_readl(MXC_CCM_PDR1) & mask) >> off) | ||
258 | #define PDR2(mask, off) ((__raw_readl(MXC_CCM_PDR2) & mask) >> off) | ||
259 | |||
260 | static unsigned long _clk_mcu_main_get_rate(struct clk *clk) | ||
261 | { | ||
262 | u32 pmcr0 = __raw_readl(MXC_CCM_PMCR0); | ||
263 | |||
264 | if ((pmcr0 & MXC_CCM_PMCR0_DFSUP1) == MXC_CCM_PMCR0_DFSUP1_SPLL) | ||
265 | return clk_get_rate(&serial_pll_clk); | ||
266 | else | ||
267 | return clk_get_rate(&mcu_pll_clk); | ||
268 | } | ||
269 | |||
270 | static unsigned long _clk_hclk_get_rate(struct clk *clk) | ||
271 | { | ||
272 | unsigned long max_pdf; | ||
273 | |||
274 | max_pdf = PDR0(MXC_CCM_PDR0_MAX_PODF_MASK, | ||
275 | MXC_CCM_PDR0_MAX_PODF_OFFSET); | ||
276 | return clk_get_rate(clk->parent) / (max_pdf + 1); | ||
277 | } | ||
278 | |||
279 | static unsigned long _clk_ipg_get_rate(struct clk *clk) | ||
280 | { | ||
281 | unsigned long ipg_pdf; | ||
282 | |||
283 | ipg_pdf = PDR0(MXC_CCM_PDR0_IPG_PODF_MASK, | ||
284 | MXC_CCM_PDR0_IPG_PODF_OFFSET); | ||
285 | return clk_get_rate(clk->parent) / (ipg_pdf + 1); | ||
286 | } | ||
287 | |||
288 | static unsigned long _clk_nfc_get_rate(struct clk *clk) | ||
289 | { | ||
290 | unsigned long nfc_pdf; | ||
291 | |||
292 | nfc_pdf = PDR0(MXC_CCM_PDR0_NFC_PODF_MASK, | ||
293 | MXC_CCM_PDR0_NFC_PODF_OFFSET); | ||
294 | return clk_get_rate(clk->parent) / (nfc_pdf + 1); | ||
295 | } | ||
296 | |||
297 | static unsigned long _clk_hsp_get_rate(struct clk *clk) | ||
298 | { | ||
299 | unsigned long hsp_pdf; | ||
300 | |||
301 | hsp_pdf = PDR0(MXC_CCM_PDR0_HSP_PODF_MASK, | ||
302 | MXC_CCM_PDR0_HSP_PODF_OFFSET); | ||
303 | return clk_get_rate(clk->parent) / (hsp_pdf + 1); | ||
304 | } | ||
305 | |||
306 | static unsigned long _clk_usb_get_rate(struct clk *clk) | ||
307 | { | ||
308 | unsigned long usb_pdf, usb_prepdf; | ||
309 | |||
310 | usb_pdf = PDR1(MXC_CCM_PDR1_USB_PODF_MASK, | ||
311 | MXC_CCM_PDR1_USB_PODF_OFFSET); | ||
312 | usb_prepdf = PDR1(MXC_CCM_PDR1_USB_PRDF_MASK, | ||
313 | MXC_CCM_PDR1_USB_PRDF_OFFSET); | ||
314 | return clk_get_rate(clk->parent) / (usb_prepdf + 1) / (usb_pdf + 1); | ||
315 | } | ||
316 | |||
317 | static unsigned long _clk_csi_get_rate(struct clk *clk) | ||
318 | { | ||
319 | u32 reg, pre, post; | ||
320 | |||
321 | reg = __raw_readl(MXC_CCM_PDR0); | ||
322 | pre = (reg & MXC_CCM_PDR0_CSI_PRDF_MASK) >> | ||
323 | MXC_CCM_PDR0_CSI_PRDF_OFFSET; | ||
324 | pre++; | ||
325 | post = (reg & MXC_CCM_PDR0_CSI_PODF_MASK) >> | ||
326 | MXC_CCM_PDR0_CSI_PODF_OFFSET; | ||
327 | post++; | ||
328 | return clk_get_rate(clk->parent) / (pre * post); | ||
329 | } | ||
330 | |||
331 | static unsigned long _clk_csi_round_rate(struct clk *clk, unsigned long rate) | ||
332 | { | ||
333 | u32 pre, post, parent = clk_get_rate(clk->parent); | ||
334 | u32 div = parent / rate; | ||
335 | |||
336 | if (parent % rate) | ||
337 | div++; | ||
338 | |||
339 | __calc_pre_post_dividers(div, &pre, &post); | ||
340 | |||
341 | return parent / (pre * post); | ||
342 | } | ||
343 | |||
344 | static int _clk_csi_set_rate(struct clk *clk, unsigned long rate) | ||
345 | { | ||
346 | u32 reg, div, pre, post, parent = clk_get_rate(clk->parent); | ||
347 | |||
348 | div = parent / rate; | ||
349 | |||
350 | if ((parent / div) != rate) | ||
351 | return -EINVAL; | ||
352 | |||
353 | __calc_pre_post_dividers(div, &pre, &post); | ||
354 | |||
355 | /* Set CSI clock divider */ | ||
356 | reg = __raw_readl(MXC_CCM_PDR0) & | ||
357 | ~(MXC_CCM_PDR0_CSI_PODF_MASK | MXC_CCM_PDR0_CSI_PRDF_MASK); | ||
358 | reg |= (post - 1) << MXC_CCM_PDR0_CSI_PODF_OFFSET; | ||
359 | reg |= (pre - 1) << MXC_CCM_PDR0_CSI_PRDF_OFFSET; | ||
360 | __raw_writel(reg, MXC_CCM_PDR0); | ||
361 | |||
362 | return 0; | ||
363 | } | ||
364 | |||
365 | static unsigned long _clk_per_get_rate(struct clk *clk) | ||
366 | { | ||
367 | unsigned long per_pdf; | ||
368 | |||
369 | per_pdf = PDR0(MXC_CCM_PDR0_PER_PODF_MASK, | ||
370 | MXC_CCM_PDR0_PER_PODF_OFFSET); | ||
371 | return clk_get_rate(clk->parent) / (per_pdf + 1); | ||
372 | } | ||
373 | |||
374 | static unsigned long _clk_ssi1_get_rate(struct clk *clk) | ||
375 | { | ||
376 | unsigned long ssi1_pdf, ssi1_prepdf; | ||
377 | |||
378 | ssi1_pdf = PDR1(MXC_CCM_PDR1_SSI1_PODF_MASK, | ||
379 | MXC_CCM_PDR1_SSI1_PODF_OFFSET); | ||
380 | ssi1_prepdf = PDR1(MXC_CCM_PDR1_SSI1_PRE_PODF_MASK, | ||
381 | MXC_CCM_PDR1_SSI1_PRE_PODF_OFFSET); | ||
382 | return clk_get_rate(clk->parent) / (ssi1_prepdf + 1) / (ssi1_pdf + 1); | ||
383 | } | ||
384 | |||
385 | static unsigned long _clk_ssi2_get_rate(struct clk *clk) | ||
386 | { | ||
387 | unsigned long ssi2_pdf, ssi2_prepdf; | ||
388 | |||
389 | ssi2_pdf = PDR1(MXC_CCM_PDR1_SSI2_PODF_MASK, | ||
390 | MXC_CCM_PDR1_SSI2_PODF_OFFSET); | ||
391 | ssi2_prepdf = PDR1(MXC_CCM_PDR1_SSI2_PRE_PODF_MASK, | ||
392 | MXC_CCM_PDR1_SSI2_PRE_PODF_OFFSET); | ||
393 | return clk_get_rate(clk->parent) / (ssi2_prepdf + 1) / (ssi2_pdf + 1); | ||
394 | } | ||
395 | |||
396 | static unsigned long _clk_firi_get_rate(struct clk *clk) | ||
397 | { | ||
398 | unsigned long firi_pdf, firi_prepdf; | ||
399 | |||
400 | firi_pdf = PDR1(MXC_CCM_PDR1_FIRI_PODF_MASK, | ||
401 | MXC_CCM_PDR1_FIRI_PODF_OFFSET); | ||
402 | firi_prepdf = PDR1(MXC_CCM_PDR1_FIRI_PRE_PODF_MASK, | ||
403 | MXC_CCM_PDR1_FIRI_PRE_PODF_OFFSET); | ||
404 | return clk_get_rate(clk->parent) / (firi_prepdf + 1) / (firi_pdf + 1); | ||
405 | } | ||
406 | |||
407 | static unsigned long _clk_firi_round_rate(struct clk *clk, unsigned long rate) | ||
408 | { | ||
409 | u32 pre, post; | ||
410 | u32 parent = clk_get_rate(clk->parent); | ||
411 | u32 div = parent / rate; | ||
412 | |||
413 | if (parent % rate) | ||
414 | div++; | ||
415 | |||
416 | __calc_pre_post_dividers(div, &pre, &post); | ||
417 | |||
418 | return parent / (pre * post); | ||
419 | |||
420 | } | ||
421 | |||
422 | static int _clk_firi_set_rate(struct clk *clk, unsigned long rate) | ||
423 | { | ||
424 | u32 reg, div, pre, post, parent = clk_get_rate(clk->parent); | ||
425 | |||
426 | div = parent / rate; | ||
427 | |||
428 | if ((parent / div) != rate) | ||
429 | return -EINVAL; | ||
430 | |||
431 | __calc_pre_post_dividers(div, &pre, &post); | ||
432 | |||
433 | /* Set FIRI clock divider */ | ||
434 | reg = __raw_readl(MXC_CCM_PDR1) & | ||
435 | ~(MXC_CCM_PDR1_FIRI_PODF_MASK | MXC_CCM_PDR1_FIRI_PRE_PODF_MASK); | ||
436 | reg |= (pre - 1) << MXC_CCM_PDR1_FIRI_PRE_PODF_OFFSET; | ||
437 | reg |= (post - 1) << MXC_CCM_PDR1_FIRI_PODF_OFFSET; | ||
438 | __raw_writel(reg, MXC_CCM_PDR1); | ||
439 | |||
440 | return 0; | ||
441 | } | ||
442 | |||
443 | static unsigned long _clk_mbx_get_rate(struct clk *clk) | ||
444 | { | ||
445 | return clk_get_rate(clk->parent) / 2; | ||
446 | } | ||
447 | |||
448 | static unsigned long _clk_mstick1_get_rate(struct clk *clk) | ||
449 | { | ||
450 | unsigned long msti_pdf; | ||
451 | |||
452 | msti_pdf = PDR2(MXC_CCM_PDR2_MST1_PDF_MASK, | ||
453 | MXC_CCM_PDR2_MST1_PDF_OFFSET); | ||
454 | return clk_get_rate(clk->parent) / (msti_pdf + 1); | ||
455 | } | ||
456 | |||
457 | static unsigned long _clk_mstick2_get_rate(struct clk *clk) | ||
458 | { | ||
459 | unsigned long msti_pdf; | ||
460 | |||
461 | msti_pdf = PDR2(MXC_CCM_PDR2_MST2_PDF_MASK, | ||
462 | MXC_CCM_PDR2_MST2_PDF_OFFSET); | ||
463 | return clk_get_rate(clk->parent) / (msti_pdf + 1); | ||
464 | } | ||
465 | |||
466 | static unsigned long ckih_rate; | ||
467 | |||
468 | static unsigned long clk_ckih_get_rate(struct clk *clk) | ||
469 | { | ||
470 | return ckih_rate; | ||
471 | } | ||
472 | |||
473 | static struct clk ckih_clk = { | ||
474 | .name = "ckih", | ||
475 | .get_rate = clk_ckih_get_rate, | ||
476 | }; | ||
477 | |||
478 | static unsigned long clk_ckil_get_rate(struct clk *clk) | ||
479 | { | ||
480 | return CKIL_CLK_FREQ; | ||
481 | } | ||
482 | |||
483 | static struct clk ckil_clk = { | ||
484 | .name = "ckil", | ||
485 | .get_rate = clk_ckil_get_rate, | ||
486 | }; | ||
487 | |||
488 | static struct clk mcu_pll_clk = { | ||
489 | .name = "mcu_pll", | ||
490 | .parent = &ckih_clk, | ||
491 | .set_rate = _clk_pll_set_rate, | ||
492 | .get_rate = _clk_pll_get_rate, | ||
493 | }; | ||
494 | |||
495 | static struct clk mcu_main_clk = { | ||
496 | .name = "mcu_main_clk", | ||
497 | .parent = &mcu_pll_clk, | ||
498 | .get_rate = _clk_mcu_main_get_rate, | ||
499 | }; | ||
500 | |||
501 | static struct clk serial_pll_clk = { | ||
502 | .name = "serial_pll", | ||
503 | .parent = &ckih_clk, | ||
504 | .set_rate = _clk_pll_set_rate, | ||
505 | .get_rate = _clk_pll_get_rate, | ||
506 | .enable = _clk_serial_pll_enable, | ||
507 | .disable = _clk_serial_pll_disable, | ||
508 | }; | ||
509 | |||
510 | static struct clk usb_pll_clk = { | ||
511 | .name = "usb_pll", | ||
512 | .parent = &ckih_clk, | ||
513 | .set_rate = _clk_pll_set_rate, | ||
514 | .get_rate = _clk_pll_get_rate, | ||
515 | .enable = _clk_usb_pll_enable, | ||
516 | .disable = _clk_usb_pll_disable, | ||
517 | }; | ||
518 | |||
519 | static struct clk ahb_clk = { | ||
520 | .name = "ahb_clk", | ||
521 | .parent = &mcu_main_clk, | ||
522 | .get_rate = _clk_hclk_get_rate, | ||
523 | }; | ||
524 | |||
525 | static struct clk per_clk = { | ||
526 | .name = "per_clk", | ||
527 | .parent = &usb_pll_clk, | ||
528 | .get_rate = _clk_per_get_rate, | ||
529 | }; | ||
530 | |||
531 | static struct clk perclk_clk = { | ||
532 | .name = "perclk_clk", | ||
533 | .parent = &ipg_clk, | ||
534 | }; | ||
535 | |||
536 | static struct clk cspi_clk[] = { | ||
537 | { | ||
538 | .name = "cspi_clk", | ||
539 | .id = 0, | ||
540 | .parent = &ipg_clk, | ||
541 | .enable = _clk_enable, | ||
542 | .enable_reg = MXC_CCM_CGR2, | ||
543 | .enable_shift = MXC_CCM_CGR2_CSPI1_OFFSET, | ||
544 | .disable = _clk_disable,}, | ||
545 | { | ||
546 | .name = "cspi_clk", | ||
547 | .id = 1, | ||
548 | .parent = &ipg_clk, | ||
549 | .enable = _clk_enable, | ||
550 | .enable_reg = MXC_CCM_CGR2, | ||
551 | .enable_shift = MXC_CCM_CGR2_CSPI2_OFFSET, | ||
552 | .disable = _clk_disable,}, | ||
553 | { | ||
554 | .name = "cspi_clk", | ||
555 | .id = 2, | ||
556 | .parent = &ipg_clk, | ||
557 | .enable = _clk_enable, | ||
558 | .enable_reg = MXC_CCM_CGR0, | ||
559 | .enable_shift = MXC_CCM_CGR0_CSPI3_OFFSET, | ||
560 | .disable = _clk_disable,}, | ||
561 | }; | ||
562 | |||
563 | static struct clk ipg_clk = { | ||
564 | .name = "ipg_clk", | ||
565 | .parent = &ahb_clk, | ||
566 | .get_rate = _clk_ipg_get_rate, | ||
567 | }; | ||
568 | |||
569 | static struct clk emi_clk = { | ||
570 | .name = "emi_clk", | ||
571 | .parent = &ahb_clk, | ||
572 | .enable = _clk_enable, | ||
573 | .enable_reg = MXC_CCM_CGR2, | ||
574 | .enable_shift = MXC_CCM_CGR2_EMI_OFFSET, | ||
575 | .disable = _clk_emi_disable, | ||
576 | }; | ||
577 | |||
578 | static struct clk gpt_clk = { | ||
579 | .name = "gpt_clk", | ||
580 | .parent = &perclk_clk, | ||
581 | .enable = _clk_enable, | ||
582 | .enable_reg = MXC_CCM_CGR0, | ||
583 | .enable_shift = MXC_CCM_CGR0_GPT_OFFSET, | ||
584 | .disable = _clk_disable, | ||
585 | }; | ||
586 | |||
587 | static struct clk pwm_clk = { | ||
588 | .name = "pwm_clk", | ||
589 | .parent = &perclk_clk, | ||
590 | .enable = _clk_enable, | ||
591 | .enable_reg = MXC_CCM_CGR0, | ||
592 | .enable_shift = MXC_CCM_CGR1_PWM_OFFSET, | ||
593 | .disable = _clk_disable, | ||
594 | }; | ||
595 | |||
596 | static struct clk epit_clk[] = { | ||
597 | { | ||
598 | .name = "epit_clk", | ||
599 | .id = 0, | ||
600 | .parent = &perclk_clk, | ||
601 | .enable = _clk_enable, | ||
602 | .enable_reg = MXC_CCM_CGR0, | ||
603 | .enable_shift = MXC_CCM_CGR0_EPIT1_OFFSET, | ||
604 | .disable = _clk_disable,}, | ||
605 | { | ||
606 | .name = "epit_clk", | ||
607 | .id = 1, | ||
608 | .parent = &perclk_clk, | ||
609 | .enable = _clk_enable, | ||
610 | .enable_reg = MXC_CCM_CGR0, | ||
611 | .enable_shift = MXC_CCM_CGR0_EPIT2_OFFSET, | ||
612 | .disable = _clk_disable,}, | ||
613 | }; | ||
614 | |||
615 | static struct clk nfc_clk = { | ||
616 | .name = "nfc_clk", | ||
617 | .parent = &ahb_clk, | ||
618 | .get_rate = _clk_nfc_get_rate, | ||
619 | }; | ||
620 | |||
621 | static struct clk scc_clk = { | ||
622 | .name = "scc_clk", | ||
623 | .parent = &ipg_clk, | ||
624 | }; | ||
625 | |||
626 | static struct clk ipu_clk = { | ||
627 | .name = "ipu_clk", | ||
628 | .parent = &mcu_main_clk, | ||
629 | .get_rate = _clk_hsp_get_rate, | ||
630 | .enable = _clk_enable, | ||
631 | .enable_reg = MXC_CCM_CGR1, | ||
632 | .enable_shift = MXC_CCM_CGR1_IPU_OFFSET, | ||
633 | .disable = _clk_disable, | ||
634 | }; | ||
635 | |||
636 | static struct clk kpp_clk = { | ||
637 | .name = "kpp_clk", | ||
638 | .parent = &ipg_clk, | ||
639 | .enable = _clk_enable, | ||
640 | .enable_reg = MXC_CCM_CGR1, | ||
641 | .enable_shift = MXC_CCM_CGR1_KPP_OFFSET, | ||
642 | .disable = _clk_disable, | ||
643 | }; | ||
644 | |||
645 | static struct clk wdog_clk = { | ||
646 | .name = "wdog_clk", | ||
647 | .parent = &ipg_clk, | ||
648 | .enable = _clk_enable, | ||
649 | .enable_reg = MXC_CCM_CGR1, | ||
650 | .enable_shift = MXC_CCM_CGR1_WDOG_OFFSET, | ||
651 | .disable = _clk_disable, | ||
652 | }; | ||
653 | static struct clk rtc_clk = { | ||
654 | .name = "rtc_clk", | ||
655 | .parent = &ipg_clk, | ||
656 | .enable = _clk_enable, | ||
657 | .enable_reg = MXC_CCM_CGR1, | ||
658 | .enable_shift = MXC_CCM_CGR1_RTC_OFFSET, | ||
659 | .disable = _clk_disable, | ||
660 | }; | ||
661 | |||
662 | static struct clk usb_clk[] = { | ||
663 | { | ||
664 | .name = "usb_clk", | ||
665 | .parent = &usb_pll_clk, | ||
666 | .get_rate = _clk_usb_get_rate,}, | ||
667 | { | ||
668 | .name = "usb_ahb_clk", | ||
669 | .parent = &ahb_clk, | ||
670 | .enable = _clk_enable, | ||
671 | .enable_reg = MXC_CCM_CGR1, | ||
672 | .enable_shift = MXC_CCM_CGR1_USBOTG_OFFSET, | ||
673 | .disable = _clk_disable,}, | ||
674 | }; | ||
675 | |||
676 | static struct clk csi_clk = { | ||
677 | .name = "csi_clk", | ||
678 | .parent = &serial_pll_clk, | ||
679 | .get_rate = _clk_csi_get_rate, | ||
680 | .round_rate = _clk_csi_round_rate, | ||
681 | .set_rate = _clk_csi_set_rate, | ||
682 | .enable = _clk_enable, | ||
683 | .enable_reg = MXC_CCM_CGR1, | ||
684 | .enable_shift = MXC_CCM_CGR1_CSI_OFFSET, | ||
685 | .disable = _clk_disable, | ||
686 | }; | ||
687 | |||
688 | static struct clk uart_clk[] = { | ||
689 | { | ||
690 | .name = "uart_clk", | ||
691 | .id = 0, | ||
692 | .parent = &perclk_clk, | ||
693 | .enable = _clk_enable, | ||
694 | .enable_reg = MXC_CCM_CGR0, | ||
695 | .enable_shift = MXC_CCM_CGR0_UART1_OFFSET, | ||
696 | .disable = _clk_disable,}, | ||
697 | { | ||
698 | .name = "uart_clk", | ||
699 | .id = 1, | ||
700 | .parent = &perclk_clk, | ||
701 | .enable = _clk_enable, | ||
702 | .enable_reg = MXC_CCM_CGR0, | ||
703 | .enable_shift = MXC_CCM_CGR0_UART2_OFFSET, | ||
704 | .disable = _clk_disable,}, | ||
705 | { | ||
706 | .name = "uart_clk", | ||
707 | .id = 2, | ||
708 | .parent = &perclk_clk, | ||
709 | .enable = _clk_enable, | ||
710 | .enable_reg = MXC_CCM_CGR1, | ||
711 | .enable_shift = MXC_CCM_CGR1_UART3_OFFSET, | ||
712 | .disable = _clk_disable,}, | ||
713 | { | ||
714 | .name = "uart_clk", | ||
715 | .id = 3, | ||
716 | .parent = &perclk_clk, | ||
717 | .enable = _clk_enable, | ||
718 | .enable_reg = MXC_CCM_CGR1, | ||
719 | .enable_shift = MXC_CCM_CGR1_UART4_OFFSET, | ||
720 | .disable = _clk_disable,}, | ||
721 | { | ||
722 | .name = "uart_clk", | ||
723 | .id = 4, | ||
724 | .parent = &perclk_clk, | ||
725 | .enable = _clk_enable, | ||
726 | .enable_reg = MXC_CCM_CGR1, | ||
727 | .enable_shift = MXC_CCM_CGR1_UART5_OFFSET, | ||
728 | .disable = _clk_disable,}, | ||
729 | }; | ||
730 | |||
731 | static struct clk i2c_clk[] = { | ||
732 | { | ||
733 | .name = "i2c_clk", | ||
734 | .id = 0, | ||
735 | .parent = &perclk_clk, | ||
736 | .enable = _clk_enable, | ||
737 | .enable_reg = MXC_CCM_CGR0, | ||
738 | .enable_shift = MXC_CCM_CGR0_I2C1_OFFSET, | ||
739 | .disable = _clk_disable,}, | ||
740 | { | ||
741 | .name = "i2c_clk", | ||
742 | .id = 1, | ||
743 | .parent = &perclk_clk, | ||
744 | .enable = _clk_enable, | ||
745 | .enable_reg = MXC_CCM_CGR0, | ||
746 | .enable_shift = MXC_CCM_CGR0_I2C2_OFFSET, | ||
747 | .disable = _clk_disable,}, | ||
748 | { | ||
749 | .name = "i2c_clk", | ||
750 | .id = 2, | ||
751 | .parent = &perclk_clk, | ||
752 | .enable = _clk_enable, | ||
753 | .enable_reg = MXC_CCM_CGR0, | ||
754 | .enable_shift = MXC_CCM_CGR0_I2C3_OFFSET, | ||
755 | .disable = _clk_disable,}, | ||
756 | }; | ||
757 | |||
758 | static struct clk owire_clk = { | ||
759 | .name = "owire_clk", | ||
760 | .parent = &perclk_clk, | ||
761 | .enable_reg = MXC_CCM_CGR1, | ||
762 | .enable_shift = MXC_CCM_CGR1_OWIRE_OFFSET, | ||
763 | .enable = _clk_enable, | ||
764 | .disable = _clk_disable, | ||
765 | }; | ||
766 | |||
767 | static struct clk sdhc_clk[] = { | ||
768 | { | ||
769 | .name = "sdhc_clk", | ||
770 | .id = 0, | ||
771 | .parent = &perclk_clk, | ||
772 | .enable = _clk_enable, | ||
773 | .enable_reg = MXC_CCM_CGR0, | ||
774 | .enable_shift = MXC_CCM_CGR0_SD_MMC1_OFFSET, | ||
775 | .disable = _clk_disable,}, | ||
776 | { | ||
777 | .name = "sdhc_clk", | ||
778 | .id = 1, | ||
779 | .parent = &perclk_clk, | ||
780 | .enable = _clk_enable, | ||
781 | .enable_reg = MXC_CCM_CGR0, | ||
782 | .enable_shift = MXC_CCM_CGR0_SD_MMC2_OFFSET, | ||
783 | .disable = _clk_disable,}, | ||
784 | }; | ||
785 | |||
786 | static struct clk ssi_clk[] = { | ||
787 | { | ||
788 | .name = "ssi_clk", | ||
789 | .parent = &serial_pll_clk, | ||
790 | .get_rate = _clk_ssi1_get_rate, | ||
791 | .enable = _clk_enable, | ||
792 | .enable_reg = MXC_CCM_CGR0, | ||
793 | .enable_shift = MXC_CCM_CGR0_SSI1_OFFSET, | ||
794 | .disable = _clk_disable,}, | ||
795 | { | ||
796 | .name = "ssi_clk", | ||
797 | .id = 1, | ||
798 | .parent = &serial_pll_clk, | ||
799 | .get_rate = _clk_ssi2_get_rate, | ||
800 | .enable = _clk_enable, | ||
801 | .enable_reg = MXC_CCM_CGR2, | ||
802 | .enable_shift = MXC_CCM_CGR2_SSI2_OFFSET, | ||
803 | .disable = _clk_disable,}, | ||
804 | }; | ||
805 | |||
806 | static struct clk firi_clk = { | ||
807 | .name = "firi_clk", | ||
808 | .parent = &usb_pll_clk, | ||
809 | .round_rate = _clk_firi_round_rate, | ||
810 | .set_rate = _clk_firi_set_rate, | ||
811 | .get_rate = _clk_firi_get_rate, | ||
812 | .enable = _clk_enable, | ||
813 | .enable_reg = MXC_CCM_CGR2, | ||
814 | .enable_shift = MXC_CCM_CGR2_FIRI_OFFSET, | ||
815 | .disable = _clk_disable, | ||
816 | }; | ||
817 | |||
818 | static struct clk ata_clk = { | ||
819 | .name = "ata_clk", | ||
820 | .parent = &ipg_clk, | ||
821 | .enable = _clk_enable, | ||
822 | .enable_reg = MXC_CCM_CGR0, | ||
823 | .enable_shift = MXC_CCM_CGR0_ATA_OFFSET, | ||
824 | .disable = _clk_disable, | ||
825 | }; | ||
826 | |||
827 | static struct clk mbx_clk = { | ||
828 | .name = "mbx_clk", | ||
829 | .parent = &ahb_clk, | ||
830 | .enable = _clk_enable, | ||
831 | .enable_reg = MXC_CCM_CGR2, | ||
832 | .enable_shift = MXC_CCM_CGR2_GACC_OFFSET, | ||
833 | .get_rate = _clk_mbx_get_rate, | ||
834 | }; | ||
835 | |||
836 | static struct clk vpu_clk = { | ||
837 | .name = "vpu_clk", | ||
838 | .parent = &ahb_clk, | ||
839 | .enable = _clk_enable, | ||
840 | .enable_reg = MXC_CCM_CGR2, | ||
841 | .enable_shift = MXC_CCM_CGR2_GACC_OFFSET, | ||
842 | .get_rate = _clk_mbx_get_rate, | ||
843 | }; | ||
844 | |||
845 | static struct clk rtic_clk = { | ||
846 | .name = "rtic_clk", | ||
847 | .parent = &ahb_clk, | ||
848 | .enable = _clk_enable, | ||
849 | .enable_reg = MXC_CCM_CGR2, | ||
850 | .enable_shift = MXC_CCM_CGR2_RTIC_OFFSET, | ||
851 | .disable = _clk_disable, | ||
852 | }; | ||
853 | |||
854 | static struct clk rng_clk = { | ||
855 | .name = "rng_clk", | ||
856 | .parent = &ipg_clk, | ||
857 | .enable = _clk_enable, | ||
858 | .enable_reg = MXC_CCM_CGR0, | ||
859 | .enable_shift = MXC_CCM_CGR0_RNG_OFFSET, | ||
860 | .disable = _clk_disable, | ||
861 | }; | ||
862 | |||
863 | static struct clk sdma_clk[] = { | ||
864 | { | ||
865 | .name = "sdma_ahb_clk", | ||
866 | .parent = &ahb_clk, | ||
867 | .enable = _clk_enable, | ||
868 | .enable_reg = MXC_CCM_CGR0, | ||
869 | .enable_shift = MXC_CCM_CGR0_SDMA_OFFSET, | ||
870 | .disable = _clk_disable,}, | ||
871 | { | ||
872 | .name = "sdma_ipg_clk", | ||
873 | .parent = &ipg_clk,} | ||
874 | }; | ||
875 | |||
876 | static struct clk mpeg4_clk = { | ||
877 | .name = "mpeg4_clk", | ||
878 | .parent = &ahb_clk, | ||
879 | .enable = _clk_enable, | ||
880 | .enable_reg = MXC_CCM_CGR1, | ||
881 | .enable_shift = MXC_CCM_CGR1_HANTRO_OFFSET, | ||
882 | .disable = _clk_disable, | ||
883 | }; | ||
884 | |||
885 | static struct clk vl2cc_clk = { | ||
886 | .name = "vl2cc_clk", | ||
887 | .parent = &ahb_clk, | ||
888 | .enable = _clk_enable, | ||
889 | .enable_reg = MXC_CCM_CGR1, | ||
890 | .enable_shift = MXC_CCM_CGR1_HANTRO_OFFSET, | ||
891 | .disable = _clk_disable, | ||
892 | }; | ||
893 | |||
894 | static struct clk mstick_clk[] = { | ||
895 | { | ||
896 | .name = "mstick_clk", | ||
897 | .id = 0, | ||
898 | .parent = &usb_pll_clk, | ||
899 | .get_rate = _clk_mstick1_get_rate, | ||
900 | .enable = _clk_enable, | ||
901 | .enable_reg = MXC_CCM_CGR1, | ||
902 | .enable_shift = MXC_CCM_CGR1_MEMSTICK1_OFFSET, | ||
903 | .disable = _clk_disable,}, | ||
904 | { | ||
905 | .name = "mstick_clk", | ||
906 | .id = 1, | ||
907 | .parent = &usb_pll_clk, | ||
908 | .get_rate = _clk_mstick2_get_rate, | ||
909 | .enable = _clk_enable, | ||
910 | .enable_reg = MXC_CCM_CGR1, | ||
911 | .enable_shift = MXC_CCM_CGR1_MEMSTICK2_OFFSET, | ||
912 | .disable = _clk_disable,}, | ||
913 | }; | ||
914 | |||
915 | static struct clk iim_clk = { | ||
916 | .name = "iim_clk", | ||
917 | .parent = &ipg_clk, | ||
918 | .enable = _clk_enable, | ||
919 | .enable_reg = MXC_CCM_CGR0, | ||
920 | .enable_shift = MXC_CCM_CGR0_IIM_OFFSET, | ||
921 | .disable = _clk_disable, | ||
922 | }; | ||
923 | |||
924 | static unsigned long _clk_cko1_round_rate(struct clk *clk, unsigned long rate) | ||
925 | { | ||
926 | u32 div, parent = clk_get_rate(clk->parent); | ||
927 | |||
928 | div = parent / rate; | ||
929 | if (parent % rate) | ||
930 | div++; | ||
931 | |||
932 | if (div > 8) | ||
933 | div = 16; | ||
934 | else if (div > 4) | ||
935 | div = 8; | ||
936 | else if (div > 2) | ||
937 | div = 4; | ||
938 | |||
939 | return parent / div; | ||
940 | } | ||
941 | |||
942 | static int _clk_cko1_set_rate(struct clk *clk, unsigned long rate) | ||
943 | { | ||
944 | u32 reg, div, parent = clk_get_rate(clk->parent); | ||
945 | |||
946 | div = parent / rate; | ||
947 | |||
948 | if (div == 16) | ||
949 | div = 4; | ||
950 | else if (div == 8) | ||
951 | div = 3; | ||
952 | else if (div == 4) | ||
953 | div = 2; | ||
954 | else if (div == 2) | ||
955 | div = 1; | ||
956 | else if (div == 1) | ||
957 | div = 0; | ||
958 | else | ||
959 | return -EINVAL; | ||
960 | |||
961 | reg = __raw_readl(MXC_CCM_COSR) & ~MXC_CCM_COSR_CLKOUTDIV_MASK; | ||
962 | reg |= div << MXC_CCM_COSR_CLKOUTDIV_OFFSET; | ||
963 | __raw_writel(reg, MXC_CCM_COSR); | ||
964 | |||
965 | return 0; | ||
966 | } | ||
967 | |||
968 | static unsigned long _clk_cko1_get_rate(struct clk *clk) | ||
969 | { | ||
970 | u32 div; | ||
971 | |||
972 | div = __raw_readl(MXC_CCM_COSR) & MXC_CCM_COSR_CLKOUTDIV_MASK >> | ||
973 | MXC_CCM_COSR_CLKOUTDIV_OFFSET; | ||
974 | |||
975 | return clk_get_rate(clk->parent) / (1 << div); | ||
976 | } | ||
977 | |||
978 | static int _clk_cko1_set_parent(struct clk *clk, struct clk *parent) | ||
979 | { | ||
980 | u32 reg; | ||
981 | |||
982 | reg = __raw_readl(MXC_CCM_COSR) & ~MXC_CCM_COSR_CLKOSEL_MASK; | ||
983 | |||
984 | if (parent == &mcu_main_clk) | ||
985 | reg |= 0 << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
986 | else if (parent == &ipg_clk) | ||
987 | reg |= 1 << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
988 | else if (parent == &usb_pll_clk) | ||
989 | reg |= 2 << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
990 | else if (parent == mcu_main_clk.parent) | ||
991 | reg |= 3 << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
992 | else if (parent == &ahb_clk) | ||
993 | reg |= 5 << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
994 | else if (parent == &serial_pll_clk) | ||
995 | reg |= 7 << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
996 | else if (parent == &ckih_clk) | ||
997 | reg |= 8 << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
998 | else if (parent == &emi_clk) | ||
999 | reg |= 9 << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
1000 | else if (parent == &ipu_clk) | ||
1001 | reg |= 0xA << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
1002 | else if (parent == &nfc_clk) | ||
1003 | reg |= 0xB << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
1004 | else if (parent == &uart_clk[0]) | ||
1005 | reg |= 0xC << MXC_CCM_COSR_CLKOSEL_OFFSET; | ||
1006 | else | ||
1007 | return -EINVAL; | ||
1008 | |||
1009 | __raw_writel(reg, MXC_CCM_COSR); | ||
1010 | |||
1011 | return 0; | ||
1012 | } | ||
1013 | |||
1014 | static int _clk_cko1_enable(struct clk *clk) | ||
1015 | { | ||
1016 | u32 reg; | ||
1017 | |||
1018 | reg = __raw_readl(MXC_CCM_COSR) | MXC_CCM_COSR_CLKOEN; | ||
1019 | __raw_writel(reg, MXC_CCM_COSR); | ||
1020 | |||
1021 | return 0; | ||
1022 | } | ||
1023 | |||
1024 | static void _clk_cko1_disable(struct clk *clk) | ||
1025 | { | ||
1026 | u32 reg; | ||
1027 | |||
1028 | reg = __raw_readl(MXC_CCM_COSR) & ~MXC_CCM_COSR_CLKOEN; | ||
1029 | __raw_writel(reg, MXC_CCM_COSR); | ||
1030 | } | ||
1031 | |||
1032 | static struct clk cko1_clk = { | ||
1033 | .name = "cko1_clk", | ||
1034 | .get_rate = _clk_cko1_get_rate, | ||
1035 | .set_rate = _clk_cko1_set_rate, | ||
1036 | .round_rate = _clk_cko1_round_rate, | ||
1037 | .set_parent = _clk_cko1_set_parent, | ||
1038 | .enable = _clk_cko1_enable, | ||
1039 | .disable = _clk_cko1_disable, | ||
1040 | }; | ||
1041 | |||
1042 | static struct clk *mxc_clks[] = { | ||
1043 | &ckih_clk, | ||
1044 | &ckil_clk, | ||
1045 | &mcu_pll_clk, | ||
1046 | &usb_pll_clk, | ||
1047 | &serial_pll_clk, | ||
1048 | &mcu_main_clk, | ||
1049 | &ahb_clk, | ||
1050 | &per_clk, | ||
1051 | &perclk_clk, | ||
1052 | &cko1_clk, | ||
1053 | &emi_clk, | ||
1054 | &cspi_clk[0], | ||
1055 | &cspi_clk[1], | ||
1056 | &cspi_clk[2], | ||
1057 | &ipg_clk, | ||
1058 | &gpt_clk, | ||
1059 | &pwm_clk, | ||
1060 | &wdog_clk, | ||
1061 | &rtc_clk, | ||
1062 | &epit_clk[0], | ||
1063 | &epit_clk[1], | ||
1064 | &nfc_clk, | ||
1065 | &ipu_clk, | ||
1066 | &kpp_clk, | ||
1067 | &usb_clk[0], | ||
1068 | &usb_clk[1], | ||
1069 | &csi_clk, | ||
1070 | &uart_clk[0], | ||
1071 | &uart_clk[1], | ||
1072 | &uart_clk[2], | ||
1073 | &uart_clk[3], | ||
1074 | &uart_clk[4], | ||
1075 | &i2c_clk[0], | ||
1076 | &i2c_clk[1], | ||
1077 | &i2c_clk[2], | ||
1078 | &owire_clk, | ||
1079 | &sdhc_clk[0], | ||
1080 | &sdhc_clk[1], | ||
1081 | &ssi_clk[0], | ||
1082 | &ssi_clk[1], | ||
1083 | &firi_clk, | ||
1084 | &ata_clk, | ||
1085 | &rtic_clk, | ||
1086 | &rng_clk, | ||
1087 | &sdma_clk[0], | ||
1088 | &sdma_clk[1], | ||
1089 | &mstick_clk[0], | ||
1090 | &mstick_clk[1], | ||
1091 | &scc_clk, | ||
1092 | &iim_clk, | ||
1093 | }; | ||
1094 | |||
1095 | int __init mxc_clocks_init(unsigned long fref) | ||
1096 | { | ||
1097 | u32 reg; | ||
1098 | struct clk **clkp; | ||
1099 | |||
1100 | ckih_rate = fref; | ||
1101 | |||
1102 | for (clkp = mxc_clks; clkp < mxc_clks + ARRAY_SIZE(mxc_clks); clkp++) | ||
1103 | clk_register(*clkp); | ||
1104 | |||
1105 | if (cpu_is_mx31()) { | ||
1106 | clk_register(&mpeg4_clk); | ||
1107 | clk_register(&mbx_clk); | ||
1108 | } else { | ||
1109 | clk_register(&vpu_clk); | ||
1110 | clk_register(&vl2cc_clk); | ||
1111 | } | ||
1112 | |||
1113 | /* Turn off all possible clocks */ | ||
1114 | __raw_writel(MXC_CCM_CGR0_GPT_MASK, MXC_CCM_CGR0); | ||
1115 | __raw_writel(0, MXC_CCM_CGR1); | ||
1116 | |||
1117 | __raw_writel(MXC_CCM_CGR2_EMI_MASK | | ||
1118 | MXC_CCM_CGR2_IPMUX1_MASK | | ||
1119 | MXC_CCM_CGR2_IPMUX2_MASK | | ||
1120 | MXC_CCM_CGR2_MXCCLKENSEL_MASK | /* for MX32 */ | ||
1121 | MXC_CCM_CGR2_CHIKCAMPEN_MASK | /* for MX32 */ | ||
1122 | MXC_CCM_CGR2_OVRVPUBUSY_MASK | /* for MX32 */ | ||
1123 | 1 << 27 | 1 << 28, /* Bit 27 and 28 are not defined for | ||
1124 | MX32, but still required to be set */ | ||
1125 | MXC_CCM_CGR2); | ||
1126 | |||
1127 | clk_disable(&cko1_clk); | ||
1128 | clk_disable(&usb_pll_clk); | ||
1129 | |||
1130 | pr_info("Clock input source is %ld\n", clk_get_rate(&ckih_clk)); | ||
1131 | |||
1132 | clk_enable(&gpt_clk); | ||
1133 | clk_enable(&emi_clk); | ||
1134 | clk_enable(&iim_clk); | ||
1135 | |||
1136 | clk_enable(&serial_pll_clk); | ||
1137 | |||
1138 | if (mx31_revision() >= CHIP_REV_2_0) { | ||
1139 | reg = __raw_readl(MXC_CCM_PMCR1); | ||
1140 | /* No PLL restart on DVFS switch; enable auto EMI handshake */ | ||
1141 | reg |= MXC_CCM_PMCR1_PLLRDIS | MXC_CCM_PMCR1_EMIRQ_EN; | ||
1142 | __raw_writel(reg, MXC_CCM_PMCR1); | ||
1143 | } | ||
1144 | |||
1145 | return 0; | ||
1146 | } | ||
1147 | |||
diff --git a/arch/arm/mach-mx3/crm_regs.h b/arch/arm/mach-mx3/crm_regs.h new file mode 100644 index 000000000000..4a0e0ede23bb --- /dev/null +++ b/arch/arm/mach-mx3/crm_regs.h | |||
@@ -0,0 +1,401 @@ | |||
1 | /* | ||
2 | * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. | ||
3 | * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de> | ||
4 | * | ||
5 | * This program is free software; you can redistribute it and/or | ||
6 | * modify it under the terms of the GNU General Public License | ||
7 | * as published by the Free Software Foundation; either version 2 | ||
8 | * of the License, or (at your option) any later version. | ||
9 | * This program is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
12 | * GNU General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU General Public License | ||
15 | * along with this program; if not, write to the Free Software | ||
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | ||
17 | * MA 02110-1301, USA. | ||
18 | */ | ||
19 | |||
20 | #ifndef __ARCH_ARM_MACH_MX3_CRM_REGS_H__ | ||
21 | #define __ARCH_ARM_MACH_MX3_CRM_REGS_H__ | ||
22 | |||
23 | #define CKIH_CLK_FREQ 26000000 | ||
24 | #define CKIH_CLK_FREQ_27MHZ 27000000 | ||
25 | #define CKIL_CLK_FREQ 32768 | ||
26 | |||
27 | #define MXC_CCM_BASE IO_ADDRESS(CCM_BASE_ADDR) | ||
28 | |||
29 | /* Register addresses */ | ||
30 | #define MXC_CCM_CCMR (MXC_CCM_BASE + 0x00) | ||
31 | #define MXC_CCM_PDR0 (MXC_CCM_BASE + 0x04) | ||
32 | #define MXC_CCM_PDR1 (MXC_CCM_BASE + 0x08) | ||
33 | #define MXC_CCM_RCSR (MXC_CCM_BASE + 0x0C) | ||
34 | #define MXC_CCM_MPCTL (MXC_CCM_BASE + 0x10) | ||
35 | #define MXC_CCM_UPCTL (MXC_CCM_BASE + 0x14) | ||
36 | #define MXC_CCM_SRPCTL (MXC_CCM_BASE + 0x18) | ||
37 | #define MXC_CCM_COSR (MXC_CCM_BASE + 0x1C) | ||
38 | #define MXC_CCM_CGR0 (MXC_CCM_BASE + 0x20) | ||
39 | #define MXC_CCM_CGR1 (MXC_CCM_BASE + 0x24) | ||
40 | #define MXC_CCM_CGR2 (MXC_CCM_BASE + 0x28) | ||
41 | #define MXC_CCM_WIMR (MXC_CCM_BASE + 0x2C) | ||
42 | #define MXC_CCM_LDC (MXC_CCM_BASE + 0x30) | ||
43 | #define MXC_CCM_DCVR0 (MXC_CCM_BASE + 0x34) | ||
44 | #define MXC_CCM_DCVR1 (MXC_CCM_BASE + 0x38) | ||
45 | #define MXC_CCM_DCVR2 (MXC_CCM_BASE + 0x3C) | ||
46 | #define MXC_CCM_DCVR3 (MXC_CCM_BASE + 0x40) | ||
47 | #define MXC_CCM_LTR0 (MXC_CCM_BASE + 0x44) | ||
48 | #define MXC_CCM_LTR1 (MXC_CCM_BASE + 0x48) | ||
49 | #define MXC_CCM_LTR2 (MXC_CCM_BASE + 0x4C) | ||
50 | #define MXC_CCM_LTR3 (MXC_CCM_BASE + 0x50) | ||
51 | #define MXC_CCM_LTBR0 (MXC_CCM_BASE + 0x54) | ||
52 | #define MXC_CCM_LTBR1 (MXC_CCM_BASE + 0x58) | ||
53 | #define MXC_CCM_PMCR0 (MXC_CCM_BASE + 0x5C) | ||
54 | #define MXC_CCM_PMCR1 (MXC_CCM_BASE + 0x60) | ||
55 | #define MXC_CCM_PDR2 (MXC_CCM_BASE + 0x64) | ||
56 | |||
57 | /* Register bit definitions */ | ||
58 | #define MXC_CCM_CCMR_WBEN (1 << 27) | ||
59 | #define MXC_CCM_CCMR_CSCS (1 << 25) | ||
60 | #define MXC_CCM_CCMR_PERCS (1 << 24) | ||
61 | #define MXC_CCM_CCMR_SSI1S_OFFSET 18 | ||
62 | #define MXC_CCM_CCMR_SSI1S_MASK (0x3 << 18) | ||
63 | #define MXC_CCM_CCMR_SSI2S_OFFSET 21 | ||
64 | #define MXC_CCM_CCMR_SSI2S_MASK (0x3 << 21) | ||
65 | #define MXC_CCM_CCMR_LPM_OFFSET 14 | ||
66 | #define MXC_CCM_CCMR_LPM_MASK (0x3 << 14) | ||
67 | #define MXC_CCM_CCMR_FIRS_OFFSET 11 | ||
68 | #define MXC_CCM_CCMR_FIRS_MASK (0x3 << 11) | ||
69 | #define MXC_CCM_CCMR_UPE (1 << 9) | ||
70 | #define MXC_CCM_CCMR_SPE (1 << 8) | ||
71 | #define MXC_CCM_CCMR_MDS (1 << 7) | ||
72 | #define MXC_CCM_CCMR_SBYCS (1 << 4) | ||
73 | #define MXC_CCM_CCMR_MPE (1 << 3) | ||
74 | #define MXC_CCM_CCMR_PRCS_OFFSET 1 | ||
75 | #define MXC_CCM_CCMR_PRCS_MASK (0x3 << 1) | ||
76 | |||
77 | #define MXC_CCM_PDR0_CSI_PODF_OFFSET 26 | ||
78 | #define MXC_CCM_PDR0_CSI_PODF_MASK (0x3F << 26) | ||
79 | #define MXC_CCM_PDR0_CSI_PRDF_OFFSET 23 | ||
80 | #define MXC_CCM_PDR0_CSI_PRDF_MASK (0x7 << 23) | ||
81 | #define MXC_CCM_PDR0_PER_PODF_OFFSET 16 | ||
82 | #define MXC_CCM_PDR0_PER_PODF_MASK (0x1F << 16) | ||
83 | #define MXC_CCM_PDR0_HSP_PODF_OFFSET 11 | ||
84 | #define MXC_CCM_PDR0_HSP_PODF_MASK (0x7 << 11) | ||
85 | #define MXC_CCM_PDR0_NFC_PODF_OFFSET 8 | ||
86 | #define MXC_CCM_PDR0_NFC_PODF_MASK (0x7 << 8) | ||
87 | #define MXC_CCM_PDR0_IPG_PODF_OFFSET 6 | ||
88 | #define MXC_CCM_PDR0_IPG_PODF_MASK (0x3 << 6) | ||
89 | #define MXC_CCM_PDR0_MAX_PODF_OFFSET 3 | ||
90 | #define MXC_CCM_PDR0_MAX_PODF_MASK (0x7 << 3) | ||
91 | #define MXC_CCM_PDR0_MCU_PODF_OFFSET 0 | ||
92 | #define MXC_CCM_PDR0_MCU_PODF_MASK 0x7 | ||
93 | |||
94 | #define MXC_CCM_PDR0_HSP_DIV_1 (0x0 << 11) | ||
95 | #define MXC_CCM_PDR0_HSP_DIV_2 (0x1 << 11) | ||
96 | #define MXC_CCM_PDR0_HSP_DIV_3 (0x2 << 11) | ||
97 | #define MXC_CCM_PDR0_HSP_DIV_4 (0x3 << 11) | ||
98 | #define MXC_CCM_PDR0_HSP_DIV_5 (0x4 << 11) | ||
99 | #define MXC_CCM_PDR0_HSP_DIV_6 (0x5 << 11) | ||
100 | #define MXC_CCM_PDR0_HSP_DIV_7 (0x6 << 11) | ||
101 | #define MXC_CCM_PDR0_HSP_DIV_8 (0x7 << 11) | ||
102 | |||
103 | #define MXC_CCM_PDR0_IPG_DIV_1 (0x0 << 6) | ||
104 | #define MXC_CCM_PDR0_IPG_DIV_2 (0x1 << 6) | ||
105 | #define MXC_CCM_PDR0_IPG_DIV_3 (0x2 << 6) | ||
106 | #define MXC_CCM_PDR0_IPG_DIV_4 (0x3 << 6) | ||
107 | |||
108 | #define MXC_CCM_PDR0_MAX_DIV_1 (0x0 << 3) | ||
109 | #define MXC_CCM_PDR0_MAX_DIV_2 (0x1 << 3) | ||
110 | #define MXC_CCM_PDR0_MAX_DIV_3 (0x2 << 3) | ||
111 | #define MXC_CCM_PDR0_MAX_DIV_4 (0x3 << 3) | ||
112 | #define MXC_CCM_PDR0_MAX_DIV_5 (0x4 << 3) | ||
113 | #define MXC_CCM_PDR0_MAX_DIV_6 (0x5 << 3) | ||
114 | #define MXC_CCM_PDR0_MAX_DIV_7 (0x6 << 3) | ||
115 | #define MXC_CCM_PDR0_MAX_DIV_8 (0x7 << 3) | ||
116 | |||
117 | #define MXC_CCM_PDR0_NFC_DIV_1 (0x0 << 8) | ||
118 | #define MXC_CCM_PDR0_NFC_DIV_2 (0x1 << 8) | ||
119 | #define MXC_CCM_PDR0_NFC_DIV_3 (0x2 << 8) | ||
120 | #define MXC_CCM_PDR0_NFC_DIV_4 (0x3 << 8) | ||
121 | #define MXC_CCM_PDR0_NFC_DIV_5 (0x4 << 8) | ||
122 | #define MXC_CCM_PDR0_NFC_DIV_6 (0x5 << 8) | ||
123 | #define MXC_CCM_PDR0_NFC_DIV_7 (0x6 << 8) | ||
124 | #define MXC_CCM_PDR0_NFC_DIV_8 (0x7 << 8) | ||
125 | |||
126 | #define MXC_CCM_PDR0_MCU_DIV_1 0x0 | ||
127 | #define MXC_CCM_PDR0_MCU_DIV_2 0x1 | ||
128 | #define MXC_CCM_PDR0_MCU_DIV_3 0x2 | ||
129 | #define MXC_CCM_PDR0_MCU_DIV_4 0x3 | ||
130 | #define MXC_CCM_PDR0_MCU_DIV_5 0x4 | ||
131 | #define MXC_CCM_PDR0_MCU_DIV_6 0x5 | ||
132 | #define MXC_CCM_PDR0_MCU_DIV_7 0x6 | ||
133 | #define MXC_CCM_PDR0_MCU_DIV_8 0x7 | ||
134 | |||
135 | #define MXC_CCM_PDR1_USB_PRDF_OFFSET 30 | ||
136 | #define MXC_CCM_PDR1_USB_PRDF_MASK (0x3 << 30) | ||
137 | #define MXC_CCM_PDR1_USB_PODF_OFFSET 27 | ||
138 | #define MXC_CCM_PDR1_USB_PODF_MASK (0x7 << 27) | ||
139 | #define MXC_CCM_PDR1_FIRI_PRE_PODF_OFFSET 24 | ||
140 | #define MXC_CCM_PDR1_FIRI_PRE_PODF_MASK (0x7 << 24) | ||
141 | #define MXC_CCM_PDR1_FIRI_PODF_OFFSET 18 | ||
142 | #define MXC_CCM_PDR1_FIRI_PODF_MASK (0x3F << 18) | ||
143 | #define MXC_CCM_PDR1_SSI2_PRE_PODF_OFFSET 15 | ||
144 | #define MXC_CCM_PDR1_SSI2_PRE_PODF_MASK (0x7 << 15) | ||
145 | #define MXC_CCM_PDR1_SSI2_PODF_OFFSET 9 | ||
146 | #define MXC_CCM_PDR1_SSI2_PODF_MASK (0x3F << 9) | ||
147 | #define MXC_CCM_PDR1_SSI1_PRE_PODF_OFFSET 6 | ||
148 | #define MXC_CCM_PDR1_SSI1_PRE_PODF_MASK (0x7 << 6) | ||
149 | #define MXC_CCM_PDR1_SSI1_PODF_OFFSET 0 | ||
150 | #define MXC_CCM_PDR1_SSI1_PODF_MASK 0x3F | ||
151 | |||
152 | /* Bit definitions for RCSR */ | ||
153 | #define MXC_CCM_RCSR_NF16B 0x80000000 | ||
154 | |||
155 | /* Bit definitions for both MCU, USB and SR PLL control registers */ | ||
156 | #define MXC_CCM_PCTL_BRM 0x80000000 | ||
157 | #define MXC_CCM_PCTL_PD_OFFSET 26 | ||
158 | #define MXC_CCM_PCTL_PD_MASK (0xF << 26) | ||
159 | #define MXC_CCM_PCTL_MFD_OFFSET 16 | ||
160 | #define MXC_CCM_PCTL_MFD_MASK (0x3FF << 16) | ||
161 | #define MXC_CCM_PCTL_MFI_OFFSET 10 | ||
162 | #define MXC_CCM_PCTL_MFI_MASK (0xF << 10) | ||
163 | #define MXC_CCM_PCTL_MFN_OFFSET 0 | ||
164 | #define MXC_CCM_PCTL_MFN_MASK 0x3FF | ||
165 | |||
166 | #define MXC_CCM_CGR0_SD_MMC1_OFFSET 0 | ||
167 | #define MXC_CCM_CGR0_SD_MMC1_MASK (0x3 << 0) | ||
168 | #define MXC_CCM_CGR0_SD_MMC2_OFFSET 2 | ||
169 | #define MXC_CCM_CGR0_SD_MMC2_MASK (0x3 << 2) | ||
170 | #define MXC_CCM_CGR0_GPT_OFFSET 4 | ||
171 | #define MXC_CCM_CGR0_GPT_MASK (0x3 << 4) | ||
172 | #define MXC_CCM_CGR0_EPIT1_OFFSET 6 | ||
173 | #define MXC_CCM_CGR0_EPIT1_MASK (0x3 << 6) | ||
174 | #define MXC_CCM_CGR0_EPIT2_OFFSET 8 | ||
175 | #define MXC_CCM_CGR0_EPIT2_MASK (0x3 << 8) | ||
176 | #define MXC_CCM_CGR0_IIM_OFFSET 10 | ||
177 | #define MXC_CCM_CGR0_IIM_MASK (0x3 << 10) | ||
178 | #define MXC_CCM_CGR0_ATA_OFFSET 12 | ||
179 | #define MXC_CCM_CGR0_ATA_MASK (0x3 << 12) | ||
180 | #define MXC_CCM_CGR0_SDMA_OFFSET 14 | ||
181 | #define MXC_CCM_CGR0_SDMA_MASK (0x3 << 14) | ||
182 | #define MXC_CCM_CGR0_CSPI3_OFFSET 16 | ||
183 | #define MXC_CCM_CGR0_CSPI3_MASK (0x3 << 16) | ||
184 | #define MXC_CCM_CGR0_RNG_OFFSET 18 | ||
185 | #define MXC_CCM_CGR0_RNG_MASK (0x3 << 18) | ||
186 | #define MXC_CCM_CGR0_UART1_OFFSET 20 | ||
187 | #define MXC_CCM_CGR0_UART1_MASK (0x3 << 20) | ||
188 | #define MXC_CCM_CGR0_UART2_OFFSET 22 | ||
189 | #define MXC_CCM_CGR0_UART2_MASK (0x3 << 22) | ||
190 | #define MXC_CCM_CGR0_SSI1_OFFSET 24 | ||
191 | #define MXC_CCM_CGR0_SSI1_MASK (0x3 << 24) | ||
192 | #define MXC_CCM_CGR0_I2C1_OFFSET 26 | ||
193 | #define MXC_CCM_CGR0_I2C1_MASK (0x3 << 26) | ||
194 | #define MXC_CCM_CGR0_I2C2_OFFSET 28 | ||
195 | #define MXC_CCM_CGR0_I2C2_MASK (0x3 << 28) | ||
196 | #define MXC_CCM_CGR0_I2C3_OFFSET 30 | ||
197 | #define MXC_CCM_CGR0_I2C3_MASK (0x3 << 30) | ||
198 | |||
199 | #define MXC_CCM_CGR1_HANTRO_OFFSET 0 | ||
200 | #define MXC_CCM_CGR1_HANTRO_MASK (0x3 << 0) | ||
201 | #define MXC_CCM_CGR1_MEMSTICK1_OFFSET 2 | ||
202 | #define MXC_CCM_CGR1_MEMSTICK1_MASK (0x3 << 2) | ||
203 | #define MXC_CCM_CGR1_MEMSTICK2_OFFSET 4 | ||
204 | #define MXC_CCM_CGR1_MEMSTICK2_MASK (0x3 << 4) | ||
205 | #define MXC_CCM_CGR1_CSI_OFFSET 6 | ||
206 | #define MXC_CCM_CGR1_CSI_MASK (0x3 << 6) | ||
207 | #define MXC_CCM_CGR1_RTC_OFFSET 8 | ||
208 | #define MXC_CCM_CGR1_RTC_MASK (0x3 << 8) | ||
209 | #define MXC_CCM_CGR1_WDOG_OFFSET 10 | ||
210 | #define MXC_CCM_CGR1_WDOG_MASK (0x3 << 10) | ||
211 | #define MXC_CCM_CGR1_PWM_OFFSET 12 | ||
212 | #define MXC_CCM_CGR1_PWM_MASK (0x3 << 12) | ||
213 | #define MXC_CCM_CGR1_SIM_OFFSET 14 | ||
214 | #define MXC_CCM_CGR1_SIM_MASK (0x3 << 14) | ||
215 | #define MXC_CCM_CGR1_ECT_OFFSET 16 | ||
216 | #define MXC_CCM_CGR1_ECT_MASK (0x3 << 16) | ||
217 | #define MXC_CCM_CGR1_USBOTG_OFFSET 18 | ||
218 | #define MXC_CCM_CGR1_USBOTG_MASK (0x3 << 18) | ||
219 | #define MXC_CCM_CGR1_KPP_OFFSET 20 | ||
220 | #define MXC_CCM_CGR1_KPP_MASK (0x3 << 20) | ||
221 | #define MXC_CCM_CGR1_IPU_OFFSET 22 | ||
222 | #define MXC_CCM_CGR1_IPU_MASK (0x3 << 22) | ||
223 | #define MXC_CCM_CGR1_UART3_OFFSET 24 | ||
224 | #define MXC_CCM_CGR1_UART3_MASK (0x3 << 24) | ||
225 | #define MXC_CCM_CGR1_UART4_OFFSET 26 | ||
226 | #define MXC_CCM_CGR1_UART4_MASK (0x3 << 26) | ||
227 | #define MXC_CCM_CGR1_UART5_OFFSET 28 | ||
228 | #define MXC_CCM_CGR1_UART5_MASK (0x3 << 28) | ||
229 | #define MXC_CCM_CGR1_OWIRE_OFFSET 30 | ||
230 | #define MXC_CCM_CGR1_OWIRE_MASK (0x3 << 30) | ||
231 | |||
232 | #define MXC_CCM_CGR2_SSI2_OFFSET 0 | ||
233 | #define MXC_CCM_CGR2_SSI2_MASK (0x3 << 0) | ||
234 | #define MXC_CCM_CGR2_CSPI1_OFFSET 2 | ||
235 | #define MXC_CCM_CGR2_CSPI1_MASK (0x3 << 2) | ||
236 | #define MXC_CCM_CGR2_CSPI2_OFFSET 4 | ||
237 | #define MXC_CCM_CGR2_CSPI2_MASK (0x3 << 4) | ||
238 | #define MXC_CCM_CGR2_GACC_OFFSET 6 | ||
239 | #define MXC_CCM_CGR2_GACC_MASK (0x3 << 6) | ||
240 | #define MXC_CCM_CGR2_EMI_OFFSET 8 | ||
241 | #define MXC_CCM_CGR2_EMI_MASK (0x3 << 8) | ||
242 | #define MXC_CCM_CGR2_RTIC_OFFSET 10 | ||
243 | #define MXC_CCM_CGR2_RTIC_MASK (0x3 << 10) | ||
244 | #define MXC_CCM_CGR2_FIRI_OFFSET 12 | ||
245 | #define MXC_CCM_CGR2_FIRI_MASK (0x3 << 12) | ||
246 | #define MXC_CCM_CGR2_IPMUX1_OFFSET 14 | ||
247 | #define MXC_CCM_CGR2_IPMUX1_MASK (0x3 << 14) | ||
248 | #define MXC_CCM_CGR2_IPMUX2_OFFSET 16 | ||
249 | #define MXC_CCM_CGR2_IPMUX2_MASK (0x3 << 16) | ||
250 | |||
251 | /* These new CGR2 bits are added in MX32 */ | ||
252 | #define MXC_CCM_CGR2_APMSYSCLKSEL_OFFSET 18 | ||
253 | #define MXC_CCM_CGR2_APMSYSCLKSEL_MASK (0x3 << 18) | ||
254 | #define MXC_CCM_CGR2_APMSSICLKSEL_OFFSET 20 | ||
255 | #define MXC_CCM_CGR2_APMSSICLKSEL_MASK (0x3 << 20) | ||
256 | #define MXC_CCM_CGR2_APMPERCLKSEL_OFFSET 22 | ||
257 | #define MXC_CCM_CGR2_APMPERCLKSEL_MASK (0x3 << 22) | ||
258 | #define MXC_CCM_CGR2_MXCCLKENSEL_OFFSET 24 | ||
259 | #define MXC_CCM_CGR2_MXCCLKENSEL_MASK (0x1 << 24) | ||
260 | #define MXC_CCM_CGR2_CHIKCAMPEN_OFFSET 25 | ||
261 | #define MXC_CCM_CGR2_CHIKCAMPEN_MASK (0x1 << 25) | ||
262 | #define MXC_CCM_CGR2_OVRVPUBUSY_OFFSET 26 | ||
263 | #define MXC_CCM_CGR2_OVRVPUBUSY_MASK (0x1 << 26) | ||
264 | #define MXC_CCM_CGR2_APMENA_OFFSET 30 | ||
265 | #define MXC_CCM_CGR2_AOMENA_MASK (0x1 << 30) | ||
266 | |||
267 | /* | ||
268 | * LTR0 register offsets | ||
269 | */ | ||
270 | #define MXC_CCM_LTR0_DIV3CK_OFFSET 1 | ||
271 | #define MXC_CCM_LTR0_DIV3CK_MASK (0x3 << 1) | ||
272 | #define MXC_CCM_LTR0_DNTHR_OFFSET 16 | ||
273 | #define MXC_CCM_LTR0_DNTHR_MASK (0x3F << 16) | ||
274 | #define MXC_CCM_LTR0_UPTHR_OFFSET 22 | ||
275 | #define MXC_CCM_LTR0_UPTHR_MASK (0x3F << 22) | ||
276 | |||
277 | /* | ||
278 | * LTR1 register offsets | ||
279 | */ | ||
280 | #define MXC_CCM_LTR1_PNCTHR_OFFSET 0 | ||
281 | #define MXC_CCM_LTR1_PNCTHR_MASK 0x3F | ||
282 | #define MXC_CCM_LTR1_UPCNT_OFFSET 6 | ||
283 | #define MXC_CCM_LTR1_UPCNT_MASK (0xFF << 6) | ||
284 | #define MXC_CCM_LTR1_DNCNT_OFFSET 14 | ||
285 | #define MXC_CCM_LTR1_DNCNT_MASK (0xFF << 14) | ||
286 | #define MXC_CCM_LTR1_LTBRSR_MASK 0x400000 | ||
287 | #define MXC_CCM_LTR1_LTBRSR_OFFSET 22 | ||
288 | #define MXC_CCM_LTR1_LTBRSR 0x400000 | ||
289 | #define MXC_CCM_LTR1_LTBRSH 0x800000 | ||
290 | |||
291 | /* | ||
292 | * LTR2 bit definitions. x ranges from 0 for WSW9 to 6 for WSW15 | ||
293 | */ | ||
294 | #define MXC_CCM_LTR2_WSW_OFFSET(x) (11 + (x) * 3) | ||
295 | #define MXC_CCM_LTR2_WSW_MASK(x) (0x7 << \ | ||
296 | MXC_CCM_LTR2_WSW_OFFSET((x))) | ||
297 | #define MXC_CCM_LTR2_EMAC_OFFSET 0 | ||
298 | #define MXC_CCM_LTR2_EMAC_MASK 0x1FF | ||
299 | |||
300 | /* | ||
301 | * LTR3 bit definitions. x ranges from 0 for WSW0 to 8 for WSW8 | ||
302 | */ | ||
303 | #define MXC_CCM_LTR3_WSW_OFFSET(x) (5 + (x) * 3) | ||
304 | #define MXC_CCM_LTR3_WSW_MASK(x) (0x7 << \ | ||
305 | MXC_CCM_LTR3_WSW_OFFSET((x))) | ||
306 | |||
307 | #define MXC_CCM_PMCR0_DFSUP1 0x80000000 | ||
308 | #define MXC_CCM_PMCR0_DFSUP1_SPLL (0 << 31) | ||
309 | #define MXC_CCM_PMCR0_DFSUP1_MPLL (1 << 31) | ||
310 | #define MXC_CCM_PMCR0_DFSUP0 0x40000000 | ||
311 | #define MXC_CCM_PMCR0_DFSUP0_PLL (0 << 30) | ||
312 | #define MXC_CCM_PMCR0_DFSUP0_PDR (1 << 30) | ||
313 | #define MXC_CCM_PMCR0_DFSUP_MASK (0x3 << 30) | ||
314 | |||
315 | #define DVSUP_TURBO 0 | ||
316 | #define DVSUP_HIGH 1 | ||
317 | #define DVSUP_MEDIUM 2 | ||
318 | #define DVSUP_LOW 3 | ||
319 | #define MXC_CCM_PMCR0_DVSUP_TURBO (DVSUP_TURBO << 28) | ||
320 | #define MXC_CCM_PMCR0_DVSUP_HIGH (DVSUP_HIGH << 28) | ||
321 | #define MXC_CCM_PMCR0_DVSUP_MEDIUM (DVSUP_MEDIUM << 28) | ||
322 | #define MXC_CCM_PMCR0_DVSUP_LOW (DVSUP_LOW << 28) | ||
323 | #define MXC_CCM_PMCR0_DVSUP_OFFSET 28 | ||
324 | #define MXC_CCM_PMCR0_DVSUP_MASK (0x3 << 28) | ||
325 | #define MXC_CCM_PMCR0_UDSC 0x08000000 | ||
326 | #define MXC_CCM_PMCR0_UDSC_MASK (1 << 27) | ||
327 | #define MXC_CCM_PMCR0_UDSC_UP (1 << 27) | ||
328 | #define MXC_CCM_PMCR0_UDSC_DOWN (0 << 27) | ||
329 | |||
330 | #define MXC_CCM_PMCR0_VSCNT_1 (0x0 << 24) | ||
331 | #define MXC_CCM_PMCR0_VSCNT_2 (0x1 << 24) | ||
332 | #define MXC_CCM_PMCR0_VSCNT_3 (0x2 << 24) | ||
333 | #define MXC_CCM_PMCR0_VSCNT_4 (0x3 << 24) | ||
334 | #define MXC_CCM_PMCR0_VSCNT_5 (0x4 << 24) | ||
335 | #define MXC_CCM_PMCR0_VSCNT_6 (0x5 << 24) | ||
336 | #define MXC_CCM_PMCR0_VSCNT_7 (0x6 << 24) | ||
337 | #define MXC_CCM_PMCR0_VSCNT_8 (0x7 << 24) | ||
338 | #define MXC_CCM_PMCR0_VSCNT_OFFSET 24 | ||
339 | #define MXC_CCM_PMCR0_VSCNT_MASK (0x7 << 24) | ||
340 | #define MXC_CCM_PMCR0_DVFEV 0x00800000 | ||
341 | #define MXC_CCM_PMCR0_DVFIS 0x00400000 | ||
342 | #define MXC_CCM_PMCR0_LBMI 0x00200000 | ||
343 | #define MXC_CCM_PMCR0_LBFL 0x00100000 | ||
344 | #define MXC_CCM_PMCR0_LBCF_4 (0x0 << 18) | ||
345 | #define MXC_CCM_PMCR0_LBCF_8 (0x1 << 18) | ||
346 | #define MXC_CCM_PMCR0_LBCF_12 (0x2 << 18) | ||
347 | #define MXC_CCM_PMCR0_LBCF_16 (0x3 << 18) | ||
348 | #define MXC_CCM_PMCR0_LBCF_OFFSET 18 | ||
349 | #define MXC_CCM_PMCR0_LBCF_MASK (0x3 << 18) | ||
350 | #define MXC_CCM_PMCR0_PTVIS 0x00020000 | ||
351 | #define MXC_CCM_PMCR0_UPDTEN 0x00010000 | ||
352 | #define MXC_CCM_PMCR0_UPDTEN_MASK (0x1 << 16) | ||
353 | #define MXC_CCM_PMCR0_FSVAIM 0x00008000 | ||
354 | #define MXC_CCM_PMCR0_FSVAI_OFFSET 13 | ||
355 | #define MXC_CCM_PMCR0_FSVAI_MASK (0x3 << 13) | ||
356 | #define MXC_CCM_PMCR0_DPVCR 0x00001000 | ||
357 | #define MXC_CCM_PMCR0_DPVV 0x00000800 | ||
358 | #define MXC_CCM_PMCR0_WFIM 0x00000400 | ||
359 | #define MXC_CCM_PMCR0_DRCE3 0x00000200 | ||
360 | #define MXC_CCM_PMCR0_DRCE2 0x00000100 | ||
361 | #define MXC_CCM_PMCR0_DRCE1 0x00000080 | ||
362 | #define MXC_CCM_PMCR0_DRCE0 0x00000040 | ||
363 | #define MXC_CCM_PMCR0_DCR 0x00000020 | ||
364 | #define MXC_CCM_PMCR0_DVFEN 0x00000010 | ||
365 | #define MXC_CCM_PMCR0_PTVAIM 0x00000008 | ||
366 | #define MXC_CCM_PMCR0_PTVAI_OFFSET 1 | ||
367 | #define MXC_CCM_PMCR0_PTVAI_MASK (0x3 << 1) | ||
368 | #define MXC_CCM_PMCR0_DPTEN 0x00000001 | ||
369 | |||
370 | #define MXC_CCM_PMCR1_DVGP_OFFSET 0 | ||
371 | #define MXC_CCM_PMCR1_DVGP_MASK (0xF) | ||
372 | |||
373 | #define MXC_CCM_PMCR1_PLLRDIS (0x1 << 7) | ||
374 | #define MXC_CCM_PMCR1_EMIRQ_EN (0x1 << 8) | ||
375 | |||
376 | #define MXC_CCM_DCVR_ULV_MASK (0x3FF << 22) | ||
377 | #define MXC_CCM_DCVR_ULV_OFFSET 22 | ||
378 | #define MXC_CCM_DCVR_LLV_MASK (0x3FF << 12) | ||
379 | #define MXC_CCM_DCVR_LLV_OFFSET 12 | ||
380 | #define MXC_CCM_DCVR_ELV_MASK (0x3FF << 2) | ||
381 | #define MXC_CCM_DCVR_ELV_OFFSET 2 | ||
382 | |||
383 | #define MXC_CCM_PDR2_MST2_PDF_MASK (0x3F << 7) | ||
384 | #define MXC_CCM_PDR2_MST2_PDF_OFFSET 7 | ||
385 | #define MXC_CCM_PDR2_MST1_PDF_MASK 0x3F | ||
386 | #define MXC_CCM_PDR2_MST1_PDF_OFFSET 0 | ||
387 | |||
388 | #define MXC_CCM_COSR_CLKOSEL_MASK 0x0F | ||
389 | #define MXC_CCM_COSR_CLKOSEL_OFFSET 0 | ||
390 | #define MXC_CCM_COSR_CLKOUTDIV_MASK (0x07 << 6) | ||
391 | #define MXC_CCM_COSR_CLKOUTDIV_OFFSET 6 | ||
392 | #define MXC_CCM_COSR_CLKOEN (1 << 9) | ||
393 | |||
394 | /* | ||
395 | * PMCR0 register offsets | ||
396 | */ | ||
397 | #define MXC_CCM_PMCR0_LBFL_OFFSET 20 | ||
398 | #define MXC_CCM_PMCR0_DFSUP0_OFFSET 30 | ||
399 | #define MXC_CCM_PMCR0_DFSUP1_OFFSET 31 | ||
400 | |||
401 | #endif /* __ARCH_ARM_MACH_MX3_CRM_REGS_H__ */ | ||
diff --git a/arch/arm/mach-mx3/devices.c b/arch/arm/mach-mx3/devices.c new file mode 100644 index 000000000000..5c0320fce5b6 --- /dev/null +++ b/arch/arm/mach-mx3/devices.c | |||
@@ -0,0 +1,180 @@ | |||
1 | /* | ||
2 | * Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved. | ||
3 | * Copyright 2008 Sascha Hauer, kernel@pengutronix.de | ||
4 | * | ||
5 | * This program is free software; you can redistribute it and/or | ||
6 | * modify it under the terms of the GNU General Public License | ||
7 | * as published by the Free Software Foundation; either version 2 | ||
8 | * of the License, or (at your option) any later version. | ||
9 | * This program is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
12 | * GNU General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU General Public License | ||
15 | * along with this program; if not, write to the Free Software | ||
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, | ||
17 | * Boston, MA 02110-1301, USA. | ||
18 | */ | ||
19 | |||
20 | #include <linux/module.h> | ||
21 | #include <linux/platform_device.h> | ||
22 | #include <linux/serial.h> | ||
23 | #include <linux/gpio.h> | ||
24 | #include <asm/hardware.h> | ||
25 | #include <asm/arch/imx-uart.h> | ||
26 | |||
27 | static struct resource uart0[] = { | ||
28 | { | ||
29 | .start = UART1_BASE_ADDR, | ||
30 | .end = UART1_BASE_ADDR + 0x0B5, | ||
31 | .flags = IORESOURCE_MEM, | ||
32 | }, { | ||
33 | .start = MXC_INT_UART1, | ||
34 | .end = MXC_INT_UART1, | ||
35 | .flags = IORESOURCE_IRQ, | ||
36 | }, | ||
37 | }; | ||
38 | |||
39 | static struct platform_device mxc_uart_device0 = { | ||
40 | .name = "imx-uart", | ||
41 | .id = 0, | ||
42 | .resource = uart0, | ||
43 | .num_resources = ARRAY_SIZE(uart0), | ||
44 | }; | ||
45 | |||
46 | static struct resource uart1[] = { | ||
47 | { | ||
48 | .start = UART2_BASE_ADDR, | ||
49 | .end = UART2_BASE_ADDR + 0x0B5, | ||
50 | .flags = IORESOURCE_MEM, | ||
51 | }, { | ||
52 | .start = MXC_INT_UART2, | ||
53 | .end = MXC_INT_UART2, | ||
54 | .flags = IORESOURCE_IRQ, | ||
55 | }, | ||
56 | }; | ||
57 | |||
58 | static struct platform_device mxc_uart_device1 = { | ||
59 | .name = "imx-uart", | ||
60 | .id = 1, | ||
61 | .resource = uart1, | ||
62 | .num_resources = ARRAY_SIZE(uart1), | ||
63 | }; | ||
64 | |||
65 | static struct resource uart2[] = { | ||
66 | { | ||
67 | .start = UART3_BASE_ADDR, | ||
68 | .end = UART3_BASE_ADDR + 0x0B5, | ||
69 | .flags = IORESOURCE_MEM, | ||
70 | }, { | ||
71 | .start = MXC_INT_UART3, | ||
72 | .end = MXC_INT_UART3, | ||
73 | .flags = IORESOURCE_IRQ, | ||
74 | }, | ||
75 | }; | ||
76 | |||
77 | static struct platform_device mxc_uart_device2 = { | ||
78 | .name = "imx-uart", | ||
79 | .id = 2, | ||
80 | .resource = uart2, | ||
81 | .num_resources = ARRAY_SIZE(uart2), | ||
82 | }; | ||
83 | |||
84 | static struct resource uart3[] = { | ||
85 | { | ||
86 | .start = UART4_BASE_ADDR, | ||
87 | .end = UART4_BASE_ADDR + 0x0B5, | ||
88 | .flags = IORESOURCE_MEM, | ||
89 | }, { | ||
90 | .start = MXC_INT_UART4, | ||
91 | .end = MXC_INT_UART4, | ||
92 | .flags = IORESOURCE_IRQ, | ||
93 | }, | ||
94 | }; | ||
95 | |||
96 | static struct platform_device mxc_uart_device3 = { | ||
97 | .name = "imx-uart", | ||
98 | .id = 3, | ||
99 | .resource = uart3, | ||
100 | .num_resources = ARRAY_SIZE(uart3), | ||
101 | }; | ||
102 | |||
103 | static struct resource uart4[] = { | ||
104 | { | ||
105 | .start = UART5_BASE_ADDR, | ||
106 | .end = UART5_BASE_ADDR + 0x0B5, | ||
107 | .flags = IORESOURCE_MEM, | ||
108 | }, { | ||
109 | .start = MXC_INT_UART5, | ||
110 | .end = MXC_INT_UART5, | ||
111 | .flags = IORESOURCE_IRQ, | ||
112 | }, | ||
113 | }; | ||
114 | |||
115 | static struct platform_device mxc_uart_device4 = { | ||
116 | .name = "imx-uart", | ||
117 | .id = 4, | ||
118 | .resource = uart4, | ||
119 | .num_resources = ARRAY_SIZE(uart4), | ||
120 | }; | ||
121 | |||
122 | /* | ||
123 | * Register only those UARTs that physically exist | ||
124 | */ | ||
125 | int __init imx_init_uart(int uart_no, struct imxuart_platform_data *pdata) | ||
126 | { | ||
127 | switch (uart_no) { | ||
128 | case 0: | ||
129 | mxc_uart_device0.dev.platform_data = pdata; | ||
130 | platform_device_register(&mxc_uart_device0); | ||
131 | break; | ||
132 | case 1: | ||
133 | mxc_uart_device1.dev.platform_data = pdata; | ||
134 | platform_device_register(&mxc_uart_device1); | ||
135 | break; | ||
136 | case 2: | ||
137 | mxc_uart_device2.dev.platform_data = pdata; | ||
138 | platform_device_register(&mxc_uart_device2); | ||
139 | break; | ||
140 | case 3: | ||
141 | mxc_uart_device3.dev.platform_data = pdata; | ||
142 | platform_device_register(&mxc_uart_device3); | ||
143 | break; | ||
144 | case 4: | ||
145 | mxc_uart_device4.dev.platform_data = pdata; | ||
146 | platform_device_register(&mxc_uart_device4); | ||
147 | break; | ||
148 | default: | ||
149 | return -ENODEV; | ||
150 | } | ||
151 | |||
152 | return 0; | ||
153 | } | ||
154 | |||
155 | /* GPIO port description */ | ||
156 | static struct mxc_gpio_port imx_gpio_ports[] = { | ||
157 | [0] = { | ||
158 | .chip.label = "gpio-0", | ||
159 | .base = IO_ADDRESS(GPIO1_BASE_ADDR), | ||
160 | .irq = MXC_INT_GPIO1, | ||
161 | .virtual_irq_start = MXC_GPIO_INT_BASE | ||
162 | }, | ||
163 | [1] = { | ||
164 | .chip.label = "gpio-1", | ||
165 | .base = IO_ADDRESS(GPIO2_BASE_ADDR), | ||
166 | .irq = MXC_INT_GPIO2, | ||
167 | .virtual_irq_start = MXC_GPIO_INT_BASE + GPIO_NUM_PIN | ||
168 | }, | ||
169 | [2] = { | ||
170 | .chip.label = "gpio-2", | ||
171 | .base = IO_ADDRESS(GPIO3_BASE_ADDR), | ||
172 | .irq = MXC_INT_GPIO3, | ||
173 | .virtual_irq_start = MXC_GPIO_INT_BASE + GPIO_NUM_PIN * 2 | ||
174 | } | ||
175 | }; | ||
176 | |||
177 | int __init mxc_register_gpios(void) | ||
178 | { | ||
179 | return mxc_gpio_init(imx_gpio_ports, ARRAY_SIZE(imx_gpio_ports)); | ||
180 | } | ||
diff --git a/arch/arm/mach-mx3/iomux.c b/arch/arm/mach-mx3/iomux.c new file mode 100644 index 000000000000..adc51feefc1d --- /dev/null +++ b/arch/arm/mach-mx3/iomux.c | |||
@@ -0,0 +1,111 @@ | |||
1 | /* | ||
2 | * Copyright 2004-2006 Freescale Semiconductor, Inc. All Rights Reserved. | ||
3 | * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de> | ||
4 | * | ||
5 | * This program is free software; you can redistribute it and/or | ||
6 | * modify it under the terms of the GNU General Public License | ||
7 | * as published by the Free Software Foundation; either version 2 | ||
8 | * of the License, or (at your option) any later version. | ||
9 | * This program is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
12 | * GNU General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU General Public License | ||
15 | * along with this program; if not, write to the Free Software | ||
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | ||
17 | * MA 02110-1301, USA. | ||
18 | */ | ||
19 | |||
20 | #include <linux/module.h> | ||
21 | #include <linux/spinlock.h> | ||
22 | #include <linux/io.h> | ||
23 | #include <linux/gpio.h> | ||
24 | #include <asm/hardware.h> | ||
25 | #include <asm/arch/gpio.h> | ||
26 | #include <asm/arch/iomux-mx3.h> | ||
27 | |||
28 | /* | ||
29 | * IOMUX register (base) addresses | ||
30 | */ | ||
31 | #define IOMUX_BASE IO_ADDRESS(IOMUXC_BASE_ADDR) | ||
32 | #define IOMUXINT_OBS1 (IOMUX_BASE + 0x000) | ||
33 | #define IOMUXINT_OBS2 (IOMUX_BASE + 0x004) | ||
34 | #define IOMUXGPR (IOMUX_BASE + 0x008) | ||
35 | #define IOMUXSW_MUX_CTL (IOMUX_BASE + 0x00C) | ||
36 | #define IOMUXSW_PAD_CTL (IOMUX_BASE + 0x154) | ||
37 | |||
38 | static DEFINE_SPINLOCK(gpio_mux_lock); | ||
39 | |||
40 | #define IOMUX_REG_MASK (IOMUX_PADNUM_MASK & ~0x3) | ||
41 | /* | ||
42 | * set the mode for a IOMUX pin. | ||
43 | */ | ||
44 | int mxc_iomux_mode(unsigned int pin_mode) | ||
45 | { | ||
46 | u32 reg, field, l, mode, ret = 0; | ||
47 | |||
48 | reg = IOMUXSW_MUX_CTL + (pin_mode & IOMUX_REG_MASK); | ||
49 | field = pin_mode & 0x3; | ||
50 | mode = (pin_mode & IOMUX_MODE_MASK) >> IOMUX_MODE_SHIFT; | ||
51 | |||
52 | pr_debug("%s: reg offset = 0x%x field = %d mode = 0x%02x\n", | ||
53 | __func__, (pin_mode & IOMUX_REG_MASK), field, mode); | ||
54 | |||
55 | spin_lock(&gpio_mux_lock); | ||
56 | |||
57 | l = __raw_readl(reg); | ||
58 | l &= ~(0xff << (field * 8)); | ||
59 | l |= mode << (field * 8); | ||
60 | __raw_writel(l, reg); | ||
61 | |||
62 | spin_unlock(&gpio_mux_lock); | ||
63 | |||
64 | return ret; | ||
65 | } | ||
66 | EXPORT_SYMBOL(mxc_iomux_mode); | ||
67 | |||
68 | /* | ||
69 | * This function configures the pad value for a IOMUX pin. | ||
70 | */ | ||
71 | void mxc_iomux_set_pad(enum iomux_pins pin, u32 config) | ||
72 | { | ||
73 | u32 reg, field, l; | ||
74 | |||
75 | reg = IOMUXSW_PAD_CTL + (pin + 2) / 3; | ||
76 | field = (pin + 2) % 3; | ||
77 | |||
78 | pr_debug("%s: reg offset = 0x%x field = %d\n", | ||
79 | __func__, (pin + 2) / 3, field); | ||
80 | |||
81 | spin_lock(&gpio_mux_lock); | ||
82 | |||
83 | l = __raw_readl(reg); | ||
84 | l &= ~(0x1ff << (field * 9)); | ||
85 | l |= config << (field * 9); | ||
86 | __raw_writel(l, reg); | ||
87 | |||
88 | spin_unlock(&gpio_mux_lock); | ||
89 | } | ||
90 | EXPORT_SYMBOL(mxc_iomux_set_pad); | ||
91 | |||
92 | /* | ||
93 | * This function enables/disables the general purpose function for a particular | ||
94 | * signal. | ||
95 | */ | ||
96 | void mxc_iomux_set_gpr(enum iomux_gp_func gp, bool en) | ||
97 | { | ||
98 | u32 l; | ||
99 | |||
100 | spin_lock(&gpio_mux_lock); | ||
101 | l = __raw_readl(IOMUXGPR); | ||
102 | if (en) | ||
103 | l |= gp; | ||
104 | else | ||
105 | l &= ~gp; | ||
106 | |||
107 | __raw_writel(l, IOMUXGPR); | ||
108 | spin_unlock(&gpio_mux_lock); | ||
109 | } | ||
110 | EXPORT_SYMBOL(mxc_iomux_set_gpr); | ||
111 | |||
diff --git a/arch/arm/mach-mx3/mx31ads.c b/arch/arm/mach-mx3/mx31ads.c index 7e89bdc23a9f..eba3e0cd4283 100644 --- a/arch/arm/mach-mx3/mx31ads.c +++ b/arch/arm/mach-mx3/mx31ads.c | |||
@@ -26,9 +26,11 @@ | |||
26 | #include <asm/hardware.h> | 26 | #include <asm/hardware.h> |
27 | #include <asm/mach-types.h> | 27 | #include <asm/mach-types.h> |
28 | #include <asm/mach/arch.h> | 28 | #include <asm/mach/arch.h> |
29 | #include <asm/mach/time.h> | ||
29 | #include <asm/memory.h> | 30 | #include <asm/memory.h> |
30 | #include <asm/mach/map.h> | 31 | #include <asm/mach/map.h> |
31 | #include <asm/arch/common.h> | 32 | #include <asm/arch/common.h> |
33 | #include <asm/arch/board-mx31ads.h> | ||
32 | 34 | ||
33 | /*! | 35 | /*! |
34 | * @file mx31ads.c | 36 | * @file mx31ads.c |
@@ -126,6 +128,16 @@ static void __init mxc_board_init(void) | |||
126 | mxc_init_extuart(); | 128 | mxc_init_extuart(); |
127 | } | 129 | } |
128 | 130 | ||
131 | static void __init mx31ads_timer_init(void) | ||
132 | { | ||
133 | mxc_clocks_init(26000000); | ||
134 | mxc_timer_init("ipg_clk.0"); | ||
135 | } | ||
136 | |||
137 | struct sys_timer mx31ads_timer = { | ||
138 | .init = mx31ads_timer_init, | ||
139 | }; | ||
140 | |||
129 | /* | 141 | /* |
130 | * The following uses standard kernel macros defined in arch.h in order to | 142 | * The following uses standard kernel macros defined in arch.h in order to |
131 | * initialize __mach_desc_MX31ADS data structure. | 143 | * initialize __mach_desc_MX31ADS data structure. |
@@ -138,5 +150,5 @@ MACHINE_START(MX31ADS, "Freescale MX31ADS") | |||
138 | .map_io = mx31ads_map_io, | 150 | .map_io = mx31ads_map_io, |
139 | .init_irq = mxc_init_irq, | 151 | .init_irq = mxc_init_irq, |
140 | .init_machine = mxc_board_init, | 152 | .init_machine = mxc_board_init, |
141 | .timer = &mxc_timer, | 153 | .timer = &mx31ads_timer, |
142 | MACHINE_END | 154 | MACHINE_END |
diff --git a/arch/arm/mach-mx3/mx31lite.c b/arch/arm/mach-mx3/mx31lite.c new file mode 100644 index 000000000000..1372c1a1fc3f --- /dev/null +++ b/arch/arm/mach-mx3/mx31lite.c | |||
@@ -0,0 +1,107 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2000 Deep Blue Solutions Ltd | ||
3 | * Copyright (C) 2002 Shane Nay (shane@minirl.com) | ||
4 | * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved. | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License | ||
17 | * along with this program; if not, write to the Free Software | ||
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
19 | */ | ||
20 | |||
21 | #include <linux/types.h> | ||
22 | #include <linux/init.h> | ||
23 | #include <linux/kernel.h> | ||
24 | #include <linux/memory.h> | ||
25 | |||
26 | #include <asm/hardware.h> | ||
27 | #include <asm/mach-types.h> | ||
28 | #include <asm/mach/arch.h> | ||
29 | #include <asm/mach/time.h> | ||
30 | #include <asm/mach/map.h> | ||
31 | #include <asm/arch/common.h> | ||
32 | #include <asm/page.h> | ||
33 | #include <asm/setup.h> | ||
34 | #include <asm/arch/board-mx31lite.h> | ||
35 | |||
36 | /* | ||
37 | * This file contains the board-specific initialization routines. | ||
38 | */ | ||
39 | |||
40 | /* | ||
41 | * This structure defines the MX31 memory map. | ||
42 | */ | ||
43 | static struct map_desc mx31lite_io_desc[] __initdata = { | ||
44 | { | ||
45 | .virtual = AIPS1_BASE_ADDR_VIRT, | ||
46 | .pfn = __phys_to_pfn(AIPS1_BASE_ADDR), | ||
47 | .length = AIPS1_SIZE, | ||
48 | .type = MT_NONSHARED_DEVICE | ||
49 | }, { | ||
50 | .virtual = SPBA0_BASE_ADDR_VIRT, | ||
51 | .pfn = __phys_to_pfn(SPBA0_BASE_ADDR), | ||
52 | .length = SPBA0_SIZE, | ||
53 | .type = MT_NONSHARED_DEVICE | ||
54 | }, { | ||
55 | .virtual = AIPS2_BASE_ADDR_VIRT, | ||
56 | .pfn = __phys_to_pfn(AIPS2_BASE_ADDR), | ||
57 | .length = AIPS2_SIZE, | ||
58 | .type = MT_NONSHARED_DEVICE | ||
59 | }, { | ||
60 | .virtual = CS4_BASE_ADDR_VIRT, | ||
61 | .pfn = __phys_to_pfn(CS4_BASE_ADDR), | ||
62 | .length = CS4_SIZE, | ||
63 | .type = MT_DEVICE | ||
64 | } | ||
65 | }; | ||
66 | |||
67 | /* | ||
68 | * Set up static virtual mappings. | ||
69 | */ | ||
70 | void __init mx31lite_map_io(void) | ||
71 | { | ||
72 | mxc_map_io(); | ||
73 | iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc)); | ||
74 | } | ||
75 | |||
76 | /* | ||
77 | * Board specific initialization. | ||
78 | */ | ||
79 | static void __init mxc_board_init(void) | ||
80 | { | ||
81 | } | ||
82 | |||
83 | static void __init mx31lite_timer_init(void) | ||
84 | { | ||
85 | mxc_clocks_init(26000000); | ||
86 | mxc_timer_init("ipg_clk.0"); | ||
87 | } | ||
88 | |||
89 | struct sys_timer mx31lite_timer = { | ||
90 | .init = mx31lite_timer_init, | ||
91 | }; | ||
92 | |||
93 | /* | ||
94 | * The following uses standard kernel macros defined in arch.h in order to | ||
95 | * initialize __mach_desc_MX31LITE data structure. | ||
96 | */ | ||
97 | |||
98 | MACHINE_START(MX31LITE, "LogicPD MX31 LITEKIT") | ||
99 | /* Maintainer: Freescale Semiconductor, Inc. */ | ||
100 | .phys_io = AIPS1_BASE_ADDR, | ||
101 | .io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc, | ||
102 | .boot_params = PHYS_OFFSET + 0x100, | ||
103 | .map_io = mx31lite_map_io, | ||
104 | .init_irq = mxc_init_irq, | ||
105 | .init_machine = mxc_board_init, | ||
106 | .timer = &mx31lite_timer, | ||
107 | MACHINE_END | ||
diff --git a/arch/arm/mach-mx3/pcm037.c b/arch/arm/mach-mx3/pcm037.c new file mode 100644 index 000000000000..a34ae6de266f --- /dev/null +++ b/arch/arm/mach-mx3/pcm037.c | |||
@@ -0,0 +1,130 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2008 Sascha Hauer, Pengutronix | ||
3 | * | ||
4 | * This program is free software; you can redistribute it and/or modify | ||
5 | * it under the terms of the GNU General Public License as published by | ||
6 | * the Free Software Foundation; either version 2 of the License, or | ||
7 | * (at your option) any later version. | ||
8 | * | ||
9 | * This program is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
12 | * GNU General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU General Public License | ||
15 | * along with this program; if not, write to the Free Software | ||
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
17 | */ | ||
18 | |||
19 | #include <linux/types.h> | ||
20 | #include <linux/init.h> | ||
21 | |||
22 | #include <linux/platform_device.h> | ||
23 | #include <linux/mtd/physmap.h> | ||
24 | #include <linux/memory.h> | ||
25 | |||
26 | #include <asm/hardware.h> | ||
27 | #include <asm/mach-types.h> | ||
28 | #include <asm/mach/arch.h> | ||
29 | #include <asm/mach/time.h> | ||
30 | #include <asm/mach/map.h> | ||
31 | #include <asm/arch/common.h> | ||
32 | #include <asm/arch/imx-uart.h> | ||
33 | #include <asm/arch/iomux-mx3.h> | ||
34 | #include <asm/arch/board-pcm037.h> | ||
35 | |||
36 | static struct physmap_flash_data pcm037_flash_data = { | ||
37 | .width = 2, | ||
38 | }; | ||
39 | |||
40 | static struct resource pcm037_flash_resource = { | ||
41 | .start = 0xa0000000, | ||
42 | .end = 0xa1ffffff, | ||
43 | .flags = IORESOURCE_MEM, | ||
44 | }; | ||
45 | |||
46 | static struct platform_device pcm037_flash = { | ||
47 | .name = "physmap-flash", | ||
48 | .id = 0, | ||
49 | .dev = { | ||
50 | .platform_data = &pcm037_flash_data, | ||
51 | }, | ||
52 | .resource = &pcm037_flash_resource, | ||
53 | .num_resources = 1, | ||
54 | }; | ||
55 | |||
56 | static struct imxuart_platform_data uart_pdata = { | ||
57 | .flags = 0, | ||
58 | }; | ||
59 | |||
60 | static struct platform_device *devices[] __initdata = { | ||
61 | &pcm037_flash, | ||
62 | }; | ||
63 | |||
64 | /* | ||
65 | * Board specific initialization. | ||
66 | */ | ||
67 | static void __init mxc_board_init(void) | ||
68 | { | ||
69 | platform_add_devices(devices, ARRAY_SIZE(devices)); | ||
70 | |||
71 | mxc_iomux_mode(MX31_PIN_CTS1__CTS1); | ||
72 | mxc_iomux_mode(MX31_PIN_RTS1__RTS1); | ||
73 | mxc_iomux_mode(MX31_PIN_TXD1__TXD1); | ||
74 | mxc_iomux_mode(MX31_PIN_RXD1__RXD1); | ||
75 | |||
76 | imx_init_uart(0, &uart_pdata); | ||
77 | |||
78 | mxc_iomux_mode(MX31_PIN_CSPI3_MOSI__RXD3); | ||
79 | mxc_iomux_mode(MX31_PIN_CSPI3_MISO__TXD3); | ||
80 | |||
81 | imx_init_uart(2, &uart_pdata); | ||
82 | } | ||
83 | |||
84 | /* | ||
85 | * This structure defines static mappings for the pcm037 board. | ||
86 | */ | ||
87 | static struct map_desc pcm037_io_desc[] __initdata = { | ||
88 | { | ||
89 | .virtual = AIPS1_BASE_ADDR_VIRT, | ||
90 | .pfn = __phys_to_pfn(AIPS1_BASE_ADDR), | ||
91 | .length = AIPS1_SIZE, | ||
92 | .type = MT_DEVICE | ||
93 | }, { | ||
94 | .virtual = AIPS2_BASE_ADDR_VIRT, | ||
95 | .pfn = __phys_to_pfn(AIPS2_BASE_ADDR), | ||
96 | .length = AIPS2_SIZE, | ||
97 | .type = MT_DEVICE | ||
98 | }, | ||
99 | }; | ||
100 | |||
101 | /* | ||
102 | * Set up static virtual mappings. | ||
103 | */ | ||
104 | void __init pcm037_map_io(void) | ||
105 | { | ||
106 | mxc_map_io(); | ||
107 | iotable_init(pcm037_io_desc, ARRAY_SIZE(pcm037_io_desc)); | ||
108 | } | ||
109 | |||
110 | static void __init pcm037_timer_init(void) | ||
111 | { | ||
112 | mxc_clocks_init(26000000); | ||
113 | mxc_timer_init("ipg_clk.0"); | ||
114 | } | ||
115 | |||
116 | struct sys_timer pcm037_timer = { | ||
117 | .init = pcm037_timer_init, | ||
118 | }; | ||
119 | |||
120 | MACHINE_START(PCM037, "Phytec Phycore pcm037") | ||
121 | /* Maintainer: Pengutronix */ | ||
122 | .phys_io = AIPS1_BASE_ADDR, | ||
123 | .io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc, | ||
124 | .boot_params = PHYS_OFFSET + 0x100, | ||
125 | .map_io = pcm037_map_io, | ||
126 | .init_irq = mxc_init_irq, | ||
127 | .init_machine = mxc_board_init, | ||
128 | .timer = &pcm037_timer, | ||
129 | MACHINE_END | ||
130 | |||
diff --git a/arch/arm/mach-mx3/time.c b/arch/arm/mach-mx3/time.c deleted file mode 100644 index fb565c98dbfb..000000000000 --- a/arch/arm/mach-mx3/time.c +++ /dev/null | |||
@@ -1,148 +0,0 @@ | |||
1 | /* | ||
2 | * System Timer Interrupt reconfigured to run in free-run mode. | ||
3 | * Author: Vitaly Wool | ||
4 | * Copyright 2004 MontaVista Software Inc. | ||
5 | * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. | ||
6 | */ | ||
7 | |||
8 | /* | ||
9 | * This program is free software; you can redistribute it and/or modify | ||
10 | * it under the terms of the GNU General Public License version 2 as | ||
11 | * published by the Free Software Foundation. | ||
12 | */ | ||
13 | |||
14 | /*! | ||
15 | * @file time.c | ||
16 | * @brief This file contains OS tick and wdog timer implementations. | ||
17 | * | ||
18 | * This file contains OS tick and wdog timer implementations. | ||
19 | * | ||
20 | * @ingroup Timers | ||
21 | */ | ||
22 | |||
23 | #include <linux/module.h> | ||
24 | #include <linux/init.h> | ||
25 | #include <linux/interrupt.h> | ||
26 | #include <linux/irq.h> | ||
27 | #include <asm/hardware.h> | ||
28 | #include <asm/mach/time.h> | ||
29 | #include <asm/io.h> | ||
30 | #include <asm/arch/common.h> | ||
31 | |||
32 | /*! | ||
33 | * This is the timer interrupt service routine to do required tasks. | ||
34 | * It also services the WDOG timer at the frequency of twice per WDOG | ||
35 | * timeout value. For example, if the WDOG's timeout value is 4 (2 | ||
36 | * seconds since the WDOG runs at 0.5Hz), it will be serviced once | ||
37 | * every 2/2=1 second. | ||
38 | * | ||
39 | * @param irq GPT interrupt source number (not used) | ||
40 | * @param dev_id this parameter is not used | ||
41 | * @return always returns \b IRQ_HANDLED as defined in | ||
42 | * include/linux/interrupt.h. | ||
43 | */ | ||
44 | static irqreturn_t mxc_timer_interrupt(int irq, void *dev_id) | ||
45 | { | ||
46 | unsigned int next_match; | ||
47 | |||
48 | if (__raw_readl(MXC_GPT_GPTSR) & GPTSR_OF1) { | ||
49 | do { | ||
50 | timer_tick(); | ||
51 | next_match = __raw_readl(MXC_GPT_GPTOCR1) + LATCH; | ||
52 | __raw_writel(GPTSR_OF1, MXC_GPT_GPTSR); | ||
53 | __raw_writel(next_match, MXC_GPT_GPTOCR1); | ||
54 | } while ((signed long)(next_match - | ||
55 | __raw_readl(MXC_GPT_GPTCNT)) <= 0); | ||
56 | } | ||
57 | |||
58 | return IRQ_HANDLED; | ||
59 | } | ||
60 | |||
61 | /*! | ||
62 | * This function is used to obtain the number of microseconds since the last | ||
63 | * timer interrupt. Note that interrupts is disabled by do_gettimeofday(). | ||
64 | * | ||
65 | * @return the number of microseconds since the last timer interrupt. | ||
66 | */ | ||
67 | static unsigned long mxc_gettimeoffset(void) | ||
68 | { | ||
69 | unsigned long ticks_to_match, elapsed, usec, tick_usec, i; | ||
70 | |||
71 | /* Get ticks before next timer match */ | ||
72 | ticks_to_match = | ||
73 | __raw_readl(MXC_GPT_GPTOCR1) - __raw_readl(MXC_GPT_GPTCNT); | ||
74 | |||
75 | /* We need elapsed ticks since last match */ | ||
76 | elapsed = LATCH - ticks_to_match; | ||
77 | |||
78 | /* Now convert them to usec */ | ||
79 | /* Insure no overflow when calculating the usec below */ | ||
80 | for (i = 1, tick_usec = tick_nsec / 1000;; i *= 2) { | ||
81 | tick_usec /= i; | ||
82 | if ((0xFFFFFFFF / tick_usec) > elapsed) | ||
83 | break; | ||
84 | } | ||
85 | usec = (unsigned long)(elapsed * tick_usec) / (LATCH / i); | ||
86 | |||
87 | return usec; | ||
88 | } | ||
89 | |||
90 | /*! | ||
91 | * The OS tick timer interrupt structure. | ||
92 | */ | ||
93 | static struct irqaction timer_irq = { | ||
94 | .name = "MXC Timer Tick", | ||
95 | .flags = IRQF_DISABLED | IRQF_TIMER, | ||
96 | .handler = mxc_timer_interrupt | ||
97 | }; | ||
98 | |||
99 | /*! | ||
100 | * This function is used to initialize the GPT to produce an interrupt | ||
101 | * based on HZ. It is called by start_kernel() during system startup. | ||
102 | */ | ||
103 | void __init mxc_init_time(void) | ||
104 | { | ||
105 | u32 reg, v; | ||
106 | reg = __raw_readl(MXC_GPT_GPTCR); | ||
107 | reg &= ~GPTCR_ENABLE; | ||
108 | __raw_writel(reg, MXC_GPT_GPTCR); | ||
109 | reg |= GPTCR_SWR; | ||
110 | __raw_writel(reg, MXC_GPT_GPTCR); | ||
111 | |||
112 | while ((__raw_readl(MXC_GPT_GPTCR) & GPTCR_SWR) != 0) | ||
113 | cpu_relax(); | ||
114 | |||
115 | reg = GPTCR_FRR | GPTCR_CLKSRC_HIGHFREQ; | ||
116 | __raw_writel(reg, MXC_GPT_GPTCR); | ||
117 | |||
118 | /* TODO: get timer rate from clk driver */ | ||
119 | v = 66500000; | ||
120 | |||
121 | __raw_writel((v / CLOCK_TICK_RATE) - 1, MXC_GPT_GPTPR); | ||
122 | |||
123 | if ((v % CLOCK_TICK_RATE) != 0) { | ||
124 | pr_info("\nWARNING: Can't generate CLOCK_TICK_RATE at %d Hz\n", | ||
125 | CLOCK_TICK_RATE); | ||
126 | } | ||
127 | pr_info("Actual CLOCK_TICK_RATE is %d Hz\n", | ||
128 | v / ((__raw_readl(MXC_GPT_GPTPR) & 0xFFF) + 1)); | ||
129 | |||
130 | reg = __raw_readl(MXC_GPT_GPTCNT); | ||
131 | reg += LATCH; | ||
132 | __raw_writel(reg, MXC_GPT_GPTOCR1); | ||
133 | |||
134 | setup_irq(MXC_INT_GPT, &timer_irq); | ||
135 | |||
136 | reg = __raw_readl(MXC_GPT_GPTCR); | ||
137 | reg = | ||
138 | GPTCR_FRR | GPTCR_CLKSRC_HIGHFREQ | GPTCR_STOPEN | GPTCR_DOZEN | | ||
139 | GPTCR_WAITEN | GPTCR_ENMOD | GPTCR_ENABLE; | ||
140 | __raw_writel(reg, MXC_GPT_GPTCR); | ||
141 | |||
142 | __raw_writel(GPTIR_OF1IE, MXC_GPT_GPTIR); | ||
143 | } | ||
144 | |||
145 | struct sys_timer mxc_timer = { | ||
146 | .init = mxc_init_time, | ||
147 | .offset = mxc_gettimeoffset, | ||
148 | }; | ||