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authorNobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>2012-04-12 02:45:32 -0400
committerPaul Mundt <lethal@linux-sh.org>2012-04-17 03:20:23 -0400
commitfea88a0c02822fbb91a0b8301bf9af04377876a3 (patch)
treef48ab61efdcd32f5d1f574fca3a93b91db8c3d1f /arch/sh/kernel/cpu/sh4a/clock-sh7734.c
parente00e7cb3b70e8aec5aa732b51394b841c7b4b571 (diff)
sh: Add initial support for SH7734 CPU subtype
This implements initial support for the SH7734. This adds support SCIF, TMU and RTC. Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/cpu/sh4a/clock-sh7734.c')
-rw-r--r--arch/sh/kernel/cpu/sh4a/clock-sh7734.c266
1 files changed, 266 insertions, 0 deletions
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7734.c b/arch/sh/kernel/cpu/sh4a/clock-sh7734.c
new file mode 100644
index 000000000000..1697642c1f73
--- /dev/null
+++ b/arch/sh/kernel/cpu/sh4a/clock-sh7734.c
@@ -0,0 +1,266 @@
1/*
2 * arch/sh/kernel/cpu/sh4a/clock-sh7734.c
3 *
4 * Clock framework for SH7734
5 *
6 * Copyright (C) 2011, 2012 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
7 * Copyright (C) 2011, 2012 Renesas Solutions Corp.
8 *
9 * This file is subject to the terms and conditions of the GNU General Public
10 * License. See the file "COPYING" in the main directory of this archive
11 * for more details.
12 */
13
14#include <linux/init.h>
15#include <linux/kernel.h>
16#include <linux/io.h>
17#include <linux/clkdev.h>
18#include <linux/delay.h>
19#include <asm/clock.h>
20#include <asm/freq.h>
21
22static struct clk extal_clk = {
23 .rate = 33333333,
24};
25
26#define MODEMR (0xFFCC0020)
27#define MODEMR_MASK (0x6)
28#define MODEMR_533MHZ (0x2)
29
30static unsigned long pll_recalc(struct clk *clk)
31{
32 int mode = 12;
33 u32 r = __raw_readl(MODEMR);
34
35 if ((r & MODEMR_MASK) & MODEMR_533MHZ)
36 mode = 16;
37
38 return clk->parent->rate * mode;
39}
40
41static struct sh_clk_ops pll_clk_ops = {
42 .recalc = pll_recalc,
43};
44
45static struct clk pll_clk = {
46 .ops = &pll_clk_ops,
47 .parent = &extal_clk,
48 .flags = CLK_ENABLE_ON_INIT,
49};
50
51static struct clk *main_clks[] = {
52 &extal_clk,
53 &pll_clk,
54};
55
56static int multipliers[] = { 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 };
57static int divisors[] = { 1, 3, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24 };
58
59static struct clk_div_mult_table div4_div_mult_table = {
60 .divisors = divisors,
61 .nr_divisors = ARRAY_SIZE(divisors),
62 .multipliers = multipliers,
63 .nr_multipliers = ARRAY_SIZE(multipliers),
64};
65
66static struct clk_div4_table div4_table = {
67 .div_mult_table = &div4_div_mult_table,
68};
69
70enum { DIV4_I, DIV4_S, DIV4_B, DIV4_M, DIV4_S1, DIV4_P, DIV4_NR };
71
72#define DIV4(_reg, _bit, _mask, _flags) \
73 SH_CLK_DIV4(&pll_clk, _reg, _bit, _mask, _flags)
74
75struct clk div4_clks[DIV4_NR] = {
76 [DIV4_I] = DIV4(FRQMR1, 28, 0x0003, CLK_ENABLE_ON_INIT),
77 [DIV4_S] = DIV4(FRQMR1, 20, 0x000C, CLK_ENABLE_ON_INIT),
78 [DIV4_B] = DIV4(FRQMR1, 16, 0x0140, CLK_ENABLE_ON_INIT),
79 [DIV4_M] = DIV4(FRQMR1, 12, 0x0004, CLK_ENABLE_ON_INIT),
80 [DIV4_S1] = DIV4(FRQMR1, 4, 0x0030, CLK_ENABLE_ON_INIT),
81 [DIV4_P] = DIV4(FRQMR1, 0, 0x0140, CLK_ENABLE_ON_INIT),
82};
83
84#define MSTPCR0 0xFFC80030
85#define MSTPCR1 0xFFC80034
86#define MSTPCR3 0xFFC8003C
87
88enum {
89 MSTP030, MSTP029, /* IIC */
90 MSTP026, MSTP025, MSTP024, /* SCIF */
91 MSTP023,
92 MSTP022, MSTP021,
93 MSTP019, /* HSCIF */
94 MSTP016, MSTP015, MSTP014, /* TMU / TIMER */
95 MSTP012, MSTP011, MSTP010, MSTP009, MSTP008, /* SSI */
96 MSTP007, /* HSPI */
97 MSTP115, /* ADMAC */
98 MSTP114, /* GETHER */
99 MSTP111, /* DMAC */
100 MSTP109, /* VIDEOIN1 */
101 MSTP108, /* VIDEOIN0 */
102 MSTP107, /* RGPVBG */
103 MSTP106, /* 2DG */
104 MSTP103, /* VIEW */
105 MSTP100, /* USB */
106 MSTP331, /* MMC */
107 MSTP330, /* MIMLB */
108 MSTP323, /* SDHI0 */
109 MSTP322, /* SDHI1 */
110 MSTP321, /* SDHI2 */
111 MSTP320, /* RQSPI */
112 MSTP319, /* SRC0 */
113 MSTP318, /* SRC1 */
114 MSTP317, /* RSPI */
115 MSTP316, /* RCAN0 */
116 MSTP315, /* RCAN1 */
117 MSTP314, /* FLTCL */
118 MSTP313, /* ADC */
119 MSTP312, /* MTU */
120 MSTP304, /* IE-BUS */
121 MSTP303, /* RTC */
122 MSTP302, /* HIF */
123 MSTP301, /* STIF0 */
124 MSTP300, /* STIF1 */
125 MSTP_NR };
126
127static struct clk mstp_clks[MSTP_NR] = {
128 /* MSTPCR0 */
129 [MSTP030] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 30, 0),
130 [MSTP029] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 29, 0),
131 [MSTP026] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 26, 0),
132 [MSTP025] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 25, 0),
133 [MSTP024] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 24, 0),
134 [MSTP023] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 23, 0),
135 [MSTP022] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 22, 0),
136 [MSTP021] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 21, 0),
137 [MSTP019] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 19, 0),
138 [MSTP016] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 16, 0),
139 [MSTP015] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 15, 0),
140 [MSTP014] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 14, 0),
141 [MSTP012] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 12, 0),
142 [MSTP011] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 11, 0),
143 [MSTP010] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 10, 0),
144 [MSTP009] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 9, 0),
145 [MSTP008] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 8, 0),
146 [MSTP007] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR0, 7, 0),
147
148 /* MSTPCR1 */
149 [MSTP115] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 15, 0),
150 [MSTP114] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 14, 0),
151 [MSTP111] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 11, 0),
152 [MSTP109] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 9, 0),
153 [MSTP108] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 8, 0),
154 [MSTP107] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 7, 0),
155 [MSTP106] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 6, 0),
156 [MSTP103] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 3, 0),
157 [MSTP100] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR1, 0, 0),
158
159 /* MSTPCR3 */
160 [MSTP331] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 31, 0),
161 [MSTP330] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 30, 0),
162 [MSTP323] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 23, 0),
163 [MSTP322] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 22, 0),
164 [MSTP321] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 21, 0),
165 [MSTP320] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 20, 0),
166 [MSTP319] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 19, 0),
167 [MSTP318] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 18, 0),
168 [MSTP317] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 17, 0),
169 [MSTP316] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 16, 0),
170 [MSTP315] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 15, 0),
171 [MSTP314] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 14, 0),
172 [MSTP313] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 13, 0),
173 [MSTP312] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 12, 0),
174 [MSTP304] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 4, 0),
175 [MSTP303] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 3, 0),
176 [MSTP302] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 2, 0),
177 [MSTP301] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 1, 0),
178 [MSTP300] = SH_CLK_MSTP32(&div4_clks[DIV4_P], MSTPCR3, 0, 0),
179};
180
181static struct clk_lookup lookups[] = {
182 /* main clocks */
183 CLKDEV_CON_ID("extal", &extal_clk),
184 CLKDEV_CON_ID("pll_clk", &pll_clk),
185
186 /* clocks */
187 CLKDEV_CON_ID("cpu_clk", &div4_clks[DIV4_I]),
188 CLKDEV_CON_ID("shyway_clk", &div4_clks[DIV4_S]),
189 CLKDEV_CON_ID("ddr_clk", &div4_clks[DIV4_M]),
190 CLKDEV_CON_ID("bus_clk", &div4_clks[DIV4_B]),
191 CLKDEV_CON_ID("shyway_clk1", &div4_clks[DIV4_S1]),
192 CLKDEV_CON_ID("peripheral_clk", &div4_clks[DIV4_P]),
193
194 /* MSTP32 clocks */
195 CLKDEV_DEV_ID("i2c-sh7734.0", &mstp_clks[MSTP030]),
196 CLKDEV_DEV_ID("i2c-sh7734.1", &mstp_clks[MSTP029]),
197 CLKDEV_ICK_ID("sci_fck", "sh-sci.0", &mstp_clks[MSTP026]),
198 CLKDEV_ICK_ID("sci_fck", "sh-sci.1", &mstp_clks[MSTP025]),
199 CLKDEV_ICK_ID("sci_fck", "sh-sci.2", &mstp_clks[MSTP024]),
200 CLKDEV_ICK_ID("sci_fck", "sh-sci.3", &mstp_clks[MSTP023]),
201 CLKDEV_ICK_ID("sci_fck", "sh-sci.4", &mstp_clks[MSTP022]),
202 CLKDEV_ICK_ID("sci_fck", "sh-sci.5", &mstp_clks[MSTP021]),
203 CLKDEV_CON_ID("hscif", &mstp_clks[MSTP019]),
204 CLKDEV_ICK_ID("tmu_fck", "sh_tmu.0", &mstp_clks[MSTP016]),
205 CLKDEV_ICK_ID("tmu_fck", "sh_tmu.1", &mstp_clks[MSTP016]),
206 CLKDEV_ICK_ID("tmu_fck", "sh_tmu.2", &mstp_clks[MSTP016]),
207 CLKDEV_ICK_ID("tmu_fck", "sh_tmu.3", &mstp_clks[MSTP015]),
208 CLKDEV_ICK_ID("tmu_fck", "sh_tmu.4", &mstp_clks[MSTP015]),
209 CLKDEV_ICK_ID("tmu_fck", "sh_tmu.5", &mstp_clks[MSTP015]),
210 CLKDEV_ICK_ID("tmu_fck", "sh_tmu.6", &mstp_clks[MSTP014]),
211 CLKDEV_ICK_ID("tmu_fck", "sh_tmu.7", &mstp_clks[MSTP014]),
212 CLKDEV_ICK_ID("tmu_fck", "sh_tmu.8", &mstp_clks[MSTP014]),
213 CLKDEV_CON_ID("ssi0", &mstp_clks[MSTP012]),
214 CLKDEV_CON_ID("ssi1", &mstp_clks[MSTP011]),
215 CLKDEV_CON_ID("ssi2", &mstp_clks[MSTP010]),
216 CLKDEV_CON_ID("ssi3", &mstp_clks[MSTP009]),
217 CLKDEV_CON_ID("sss", &mstp_clks[MSTP008]),
218 CLKDEV_CON_ID("hspi", &mstp_clks[MSTP007]),
219 CLKDEV_CON_ID("usb_fck", &mstp_clks[MSTP100]),
220 CLKDEV_CON_ID("videoin0", &mstp_clks[MSTP109]),
221 CLKDEV_CON_ID("videoin1", &mstp_clks[MSTP108]),
222 CLKDEV_CON_ID("rgpvg", &mstp_clks[MSTP107]),
223 CLKDEV_CON_ID("2dg", &mstp_clks[MSTP106]),
224 CLKDEV_CON_ID("view", &mstp_clks[MSTP103]),
225
226 CLKDEV_CON_ID("mmc0", &mstp_clks[MSTP331]),
227 CLKDEV_CON_ID("mimlb0", &mstp_clks[MSTP330]),
228 CLKDEV_CON_ID("sdhi0", &mstp_clks[MSTP323]),
229 CLKDEV_CON_ID("sdhi1", &mstp_clks[MSTP322]),
230 CLKDEV_CON_ID("sdhi2", &mstp_clks[MSTP321]),
231 CLKDEV_CON_ID("rqspi0", &mstp_clks[MSTP320]),
232 CLKDEV_CON_ID("src0", &mstp_clks[MSTP319]),
233 CLKDEV_CON_ID("src1", &mstp_clks[MSTP318]),
234 CLKDEV_CON_ID("rsp0", &mstp_clks[MSTP317]),
235 CLKDEV_CON_ID("rcan0", &mstp_clks[MSTP316]),
236 CLKDEV_CON_ID("rcan1", &mstp_clks[MSTP315]),
237 CLKDEV_CON_ID("fltcl0", &mstp_clks[MSTP314]),
238 CLKDEV_CON_ID("adc0", &mstp_clks[MSTP313]),
239 CLKDEV_CON_ID("mtu0", &mstp_clks[MSTP312]),
240 CLKDEV_CON_ID("iebus0", &mstp_clks[MSTP304]),
241 CLKDEV_DEV_ID("sh-eth.0", &mstp_clks[MSTP114]),
242 CLKDEV_CON_ID("rtc0", &mstp_clks[MSTP303]),
243 CLKDEV_CON_ID("hif0", &mstp_clks[MSTP302]),
244 CLKDEV_CON_ID("stif0", &mstp_clks[MSTP301]),
245 CLKDEV_CON_ID("stif1", &mstp_clks[MSTP300]),
246};
247
248int __init arch_clk_init(void)
249{
250 int i, ret = 0;
251
252 for (i = 0; i < ARRAY_SIZE(main_clks); i++)
253 ret |= clk_register(main_clks[i]);
254
255 for (i = 0; i < ARRAY_SIZE(lookups); i++)
256 clkdev_add(&lookups[i]);
257
258 if (!ret)
259 ret = sh_clk_div4_register(div4_clks, ARRAY_SIZE(div4_clks),
260 &div4_table);
261
262 if (!ret)
263 ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
264
265 return ret;
266}
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