1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
|
/*
* SH7367 clock framework support
*
* Copyright (C) 2010 Magnus Damm
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/sh_clk.h>
#include <mach/common.h>
#include <asm/clkdev.h>
/* SH7367 registers */
#define RTFRQCR 0xe6150000
#define SYFRQCR 0xe6150004
#define CMFRQCR 0xe61500E0
#define VCLKCR1 0xe6150008
#define VCLKCR2 0xe615000C
#define VCLKCR3 0xe615001C
#define SCLKACR 0xe6150010
#define SCLKBCR 0xe6150014
#define SUBUSBCKCR 0xe6158080
#define SPUCKCR 0xe6150084
#define MSUCKCR 0xe6150088
#define MVI3CKCR 0xe6150090
#define VOUCKCR 0xe6150094
#define MFCK1CR 0xe6150098
#define MFCK2CR 0xe615009C
#define PLLC1CR 0xe6150028
#define PLLC2CR 0xe615002C
#define RTMSTPCR0 0xe6158030
#define RTMSTPCR2 0xe6158038
#define SYMSTPCR0 0xe6158040
#define SYMSTPCR2 0xe6158048
#define CMMSTPCR0 0xe615804c
/* Fixed 32 KHz root clock from EXTALR pin */
static struct clk r_clk = {
.rate = 32768,
};
/*
* 26MHz default rate for the EXTALB1 root input clock.
* If needed, reset this with clk_set_rate() from the platform code.
*/
struct clk sh7367_extalb1_clk = {
.rate = 26666666,
};
/*
* 48MHz default rate for the EXTAL2 root input clock.
* If needed, reset this with clk_set_rate() from the platform code.
*/
struct clk sh7367_extal2_clk = {
.rate = 48000000,
};
/* A fixed divide-by-2 block */
static unsigned long div2_recalc(struct clk *clk)
{
return clk->parent->rate / 2;
}
static struct clk_ops div2_clk_ops = {
.recalc = div2_recalc,
};
/* Divide extalb1 by two */
static struct clk extalb1_div2_clk = {
.ops = &div2_clk_ops,
.parent = &sh7367_extalb1_clk,
};
/* Divide extal2 by two */
static struct clk extal2_div2_clk = {
.ops = &div2_clk_ops,
.parent = &sh7367_extal2_clk,
};
/* PLLC1 */
static unsigned long pllc1_recalc(struct clk *clk)
{
unsigned long mult = 1;
if (__raw_readl(PLLC1CR) & (1 << 14))
mult = (((__raw_readl(RTFRQCR) >> 24) & 0x3f) + 1) * 2;
return clk->parent->rate * mult;
}
static struct clk_ops pllc1_clk_ops = {
.recalc = pllc1_recalc,
};
static struct clk pllc1_clk = {
.ops = &pllc1_clk_ops,
.flags = CLK_ENABLE_ON_INIT,
.parent = &extalb1_div2_clk,
};
/* Divide PLLC1 by two */
static struct clk pllc1_div2_clk = {
.ops = &div2_clk_ops,
.parent = &pllc1_clk,
};
/* PLLC2 */
static unsigned long pllc2_recalc(struct clk *clk)
{
unsigned long mult = 1;
if (__raw_readl(PLLC2CR) & (1 << 31))
mult = (((__raw_readl(PLLC2CR) >> 24) & 0x3f) + 1) * 2;
return clk->parent->rate * mult;
}
static struct clk_ops pllc2_clk_ops = {
.recalc = pllc2_recalc,
};
static struct clk pllc2_clk = {
.ops = &pllc2_clk_ops,
.flags = CLK_ENABLE_ON_INIT,
.parent = &extalb1_div2_clk,
};
static struct clk *main_clks[] = {
&r_clk,
&sh7367_extalb1_clk,
&sh7367_extal2_clk,
&extalb1_div2_clk,
&extal2_div2_clk,
&pllc1_clk,
&pllc1_div2_clk,
&pllc2_clk,
};
static void div4_kick(struct clk *clk)
{
unsigned long value;
/* set KICK bit in SYFRQCR to update hardware setting */
value = __raw_readl(SYFRQCR);
value |= (1 << 31);
__raw_writel(value, SYFRQCR);
}
static int divisors[] = { 2, 3, 4, 6, 8, 12, 16, 18,
24, 32, 36, 48, 0, 72, 0, 0 };
static struct clk_div_mult_table div4_div_mult_table = {
.divisors = divisors,
.nr_divisors = ARRAY_SIZE(divisors),
};
static struct clk_div4_table div4_table = {
.div_mult_table = &div4_div_mult_table,
.kick = div4_kick,
};
enum { DIV4_I, DIV4_G, DIV4_S, DIV4_B,
DIV4_ZX, DIV4_ZT, DIV4_Z, DIV4_ZD, DIV4_HP,
DIV4_ZS, DIV4_ZB, DIV4_ZB3, DIV4_CP, DIV4_NR };
#define DIV4(_reg, _bit, _mask, _flags) \
SH_CLK_DIV4(&pllc1_clk, _reg, _bit, _mask, _flags)
static struct clk div4_clks[DIV4_NR] = {
[DIV4_I] = DIV4(RTFRQCR, 20, 0x6fff, CLK_ENABLE_ON_INIT),
[DIV4_G] = DIV4(RTFRQCR, 16, 0x6fff, CLK_ENABLE_ON_INIT),
[DIV4_S] = DIV4(RTFRQCR, 12, 0x6fff, CLK_ENABLE_ON_INIT),
[DIV4_B] = DIV4(RTFRQCR, 8, 0x6fff, CLK_ENABLE_ON_INIT),
[DIV4_ZX] = DIV4(SYFRQCR, 20, 0x6fff, 0),
[DIV4_ZT] = DIV4(SYFRQCR, 16, 0x6fff, 0),
[DIV4_Z] = DIV4(SYFRQCR, 12, 0x6fff, 0),
[DIV4_ZD] = DIV4(SYFRQCR, 8, 0x6fff, 0),
[DIV4_HP] = DIV4(SYFRQCR, 4, 0x6fff, 0),
[DIV4_ZS] = DIV4(CMFRQCR, 12, 0x6fff, 0),
[DIV4_ZB] = DIV4(CMFRQCR, 8, 0x6fff, 0),
[DIV4_ZB3] = DIV4(CMFRQCR, 4, 0x6fff, 0),
[DIV4_CP] = DIV4(CMFRQCR, 0, 0x6fff, 0),
};
enum { DIV6_SUB, DIV6_SIUA, DIV6_SIUB, DIV6_MSU, DIV6_SPU,
DIV6_MVI3, DIV6_MF1, DIV6_MF2,
DIV6_VCK1, DIV6_VCK2, DIV6_VCK3, DIV6_VOU,
DIV6_NR };
static struct clk div6_clks[DIV6_NR] = {
[DIV6_SUB] = SH_CLK_DIV6(&sh7367_extal2_clk, SUBUSBCKCR, 0),
[DIV6_SIUA] = SH_CLK_DIV6(&pllc1_div2_clk, SCLKACR, 0),
[DIV6_SIUB] = SH_CLK_DIV6(&pllc1_div2_clk, SCLKBCR, 0),
[DIV6_MSU] = SH_CLK_DIV6(&pllc1_div2_clk, MSUCKCR, 0),
[DIV6_SPU] = SH_CLK_DIV6(&pllc1_div2_clk, SPUCKCR, 0),
[DIV6_MVI3] = SH_CLK_DIV6(&pllc1_div2_clk, MVI3CKCR, 0),
[DIV6_MF1] = SH_CLK_DIV6(&pllc1_div2_clk, MFCK1CR, 0),
[DIV6_MF2] = SH_CLK_DIV6(&pllc1_div2_clk, MFCK2CR, 0),
[DIV6_VCK1] = SH_CLK_DIV6(&pllc1_div2_clk, VCLKCR1, 0),
[DIV6_VCK2] = SH_CLK_DIV6(&pllc1_div2_clk, VCLKCR2, 0),
[DIV6_VCK3] = SH_CLK_DIV6(&pllc1_div2_clk, VCLKCR3, 0),
[DIV6_VOU] = SH_CLK_DIV6(&pllc1_div2_clk, VOUCKCR, 0),
};
enum { RTMSTP001,
RTMSTP231, RTMSTP230, RTMSTP229, RTMSTP228, RTMSTP226,
RTMSTP216, RTMSTP206, RTMSTP205, RTMSTP201,
SYMSTP023, SYMSTP007, SYMSTP006, SYMSTP004,
SYMSTP003, SYMSTP002, SYMSTP001, SYMSTP000,
SYMSTP231, SYMSTP229, SYMSTP225, SYMSTP223, SYMSTP222,
SYMSTP215, SYMSTP214, SYMSTP213, SYMSTP211,
CMMSTP003,
MSTP_NR };
#define MSTP(_parent, _reg, _bit, _flags) \
SH_CLK_MSTP32(_parent, _reg, _bit, _flags)
static struct clk mstp_clks[MSTP_NR] = {
[RTMSTP001] = MSTP(&div6_clks[DIV6_SUB], RTMSTPCR0, 1, 0), /* IIC2 */
[RTMSTP231] = MSTP(&div4_clks[DIV4_B], RTMSTPCR2, 31, 0), /* VEU3 */
[RTMSTP230] = MSTP(&div4_clks[DIV4_B], RTMSTPCR2, 30, 0), /* VEU2 */
[RTMSTP229] = MSTP(&div4_clks[DIV4_B], RTMSTPCR2, 29, 0), /* VEU1 */
[RTMSTP228] = MSTP(&div4_clks[DIV4_B], RTMSTPCR2, 28, 0), /* VEU0 */
[RTMSTP226] = MSTP(&div4_clks[DIV4_B], RTMSTPCR2, 26, 0), /* VEU2H */
[RTMSTP216] = MSTP(&div6_clks[DIV6_SUB], RTMSTPCR2, 16, 0), /* IIC0 */
[RTMSTP206] = MSTP(&div4_clks[DIV4_B], RTMSTPCR2, 6, 0), /* JPU */
[RTMSTP205] = MSTP(&div6_clks[DIV6_VOU], RTMSTPCR2, 5, 0), /* VOU */
[RTMSTP201] = MSTP(&div4_clks[DIV4_B], RTMSTPCR2, 1, 0), /* VPU */
[SYMSTP023] = MSTP(&div6_clks[DIV6_SPU], SYMSTPCR0, 23, 0), /* SPU1 */
[SYMSTP007] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR0, 7, 0), /* SCIFA5 */
[SYMSTP006] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR0, 6, 0), /* SCIFB */
[SYMSTP004] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR0, 4, 0), /* SCIFA0 */
[SYMSTP003] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR0, 3, 0), /* SCIFA1 */
[SYMSTP002] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR0, 2, 0), /* SCIFA2 */
[SYMSTP001] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR0, 1, 0), /* SCIFA3 */
[SYMSTP000] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR0, 0, 0), /* SCIFA4 */
[SYMSTP231] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR2, 31, 0), /* SIU */
[SYMSTP229] = MSTP(&r_clk, SYMSTPCR2, 29, 0), /* CMT10 */
[SYMSTP225] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR2, 25, 0), /* IRDA */
[SYMSTP223] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR2, 23, 0), /* IIC1 */
[SYMSTP222] = MSTP(&div6_clks[DIV6_SUB], SYMSTPCR2, 22, 0), /* USBHS */
[SYMSTP215] = MSTP(&div4_clks[DIV4_HP], SYMSTPCR2, 15, 0), /* FLCTL */
[SYMSTP214] = MSTP(&div4_clks[DIV4_HP], SYMSTPCR2, 14, 0), /* SDHI0 */
[SYMSTP213] = MSTP(&div4_clks[DIV4_HP], SYMSTPCR2, 13, 0), /* SDHI1 */
[SYMSTP211] = MSTP(&div4_clks[DIV4_HP], SYMSTPCR2, 11, 0), /* SDHI2 */
[CMMSTP003] = MSTP(&r_clk, CMMSTPCR0, 3, 0), /* KEYSC */
};
#define CLKDEV_CON_ID(_id, _clk) { .con_id = _id, .clk = _clk }
#define CLKDEV_DEV_ID(_id, _clk) { .dev_id = _id, .clk = _clk }
static struct clk_lookup lookups[] = {
/* main clocks */
CLKDEV_CON_ID("r_clk", &r_clk),
CLKDEV_CON_ID("extalb1", &sh7367_extalb1_clk),
CLKDEV_CON_ID("extal2", &sh7367_extal2_clk),
CLKDEV_CON_ID("extalb1_div2_clk", &extalb1_div2_clk),
CLKDEV_CON_ID("extal2_div2_clk", &extal2_div2_clk),
CLKDEV_CON_ID("pllc1_clk", &pllc1_clk),
CLKDEV_CON_ID("pllc1_div2_clk", &pllc1_div2_clk),
CLKDEV_CON_ID("pllc2_clk", &pllc2_clk),
/* DIV4 clocks */
CLKDEV_CON_ID("i_clk", &div4_clks[DIV4_I]),
CLKDEV_CON_ID("g_clk", &div4_clks[DIV4_G]),
CLKDEV_CON_ID("b_clk", &div4_clks[DIV4_B]),
CLKDEV_CON_ID("zx_clk", &div4_clks[DIV4_ZX]),
CLKDEV_CON_ID("zt_clk", &div4_clks[DIV4_ZT]),
CLKDEV_CON_ID("z_clk", &div4_clks[DIV4_Z]),
CLKDEV_CON_ID("zd_clk", &div4_clks[DIV4_ZD]),
CLKDEV_CON_ID("hp_clk", &div4_clks[DIV4_HP]),
CLKDEV_CON_ID("zs_clk", &div4_clks[DIV4_ZS]),
CLKDEV_CON_ID("zb_clk", &div4_clks[DIV4_ZB]),
CLKDEV_CON_ID("zb3_clk", &div4_clks[DIV4_ZB3]),
CLKDEV_CON_ID("cp_clk", &div4_clks[DIV4_CP]),
/* DIV6 clocks */
CLKDEV_CON_ID("sub_clk", &div6_clks[DIV6_SUB]),
CLKDEV_CON_ID("siua_clk", &div6_clks[DIV6_SIUA]),
CLKDEV_CON_ID("siub_clk", &div6_clks[DIV6_SIUB]),
CLKDEV_CON_ID("msu_clk", &div6_clks[DIV6_MSU]),
CLKDEV_CON_ID("spu_clk", &div6_clks[DIV6_SPU]),
CLKDEV_CON_ID("mvi3_clk", &div6_clks[DIV6_MVI3]),
CLKDEV_CON_ID("mf1_clk", &div6_clks[DIV6_MF1]),
CLKDEV_CON_ID("mf2_clk", &div6_clks[DIV6_MF2]),
CLKDEV_CON_ID("vck1_clk", &div6_clks[DIV6_VCK1]),
CLKDEV_CON_ID("vck2_clk", &div6_clks[DIV6_VCK2]),
CLKDEV_CON_ID("vck3_clk", &div6_clks[DIV6_VCK3]),
CLKDEV_CON_ID("vou_clk", &div6_clks[DIV6_VOU]),
/* MSTP32 clocks */
CLKDEV_DEV_ID("i2c-sh_mobile.2", &mstp_clks[RTMSTP001]), /* IIC2 */
CLKDEV_DEV_ID("uio_pdrv_genirq.4", &mstp_clks[RTMSTP231]), /* VEU3 */
CLKDEV_DEV_ID("uio_pdrv_genirq.3", &mstp_clks[RTMSTP230]), /* VEU2 */
CLKDEV_DEV_ID("uio_pdrv_genirq.2", &mstp_clks[RTMSTP229]), /* VEU1 */
CLKDEV_DEV_ID("uio_pdrv_genirq.1", &mstp_clks[RTMSTP228]), /* VEU0 */
CLKDEV_DEV_ID("uio_pdrv_genirq.5", &mstp_clks[RTMSTP226]), /* VEU2H */
CLKDEV_DEV_ID("i2c-sh_mobile.0", &mstp_clks[RTMSTP216]), /* IIC0 */
CLKDEV_DEV_ID("uio_pdrv_genirq.6", &mstp_clks[RTMSTP206]), /* JPU */
CLKDEV_DEV_ID("sh-vou", &mstp_clks[RTMSTP205]), /* VOU */
CLKDEV_DEV_ID("uio_pdrv_genirq.0", &mstp_clks[RTMSTP201]), /* VPU */
CLKDEV_DEV_ID("uio_pdrv_genirq.7", &mstp_clks[SYMSTP023]), /* SPU1 */
CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[SYMSTP007]), /* SCIFA5 */
CLKDEV_DEV_ID("sh-sci.6", &mstp_clks[SYMSTP006]), /* SCIFB */
CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[SYMSTP004]), /* SCIFA0 */
CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[SYMSTP003]), /* SCIFA1 */
CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[SYMSTP002]), /* SCIFA2 */
CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[SYMSTP001]), /* SCIFA3 */
CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[SYMSTP000]), /* SCIFA4 */
CLKDEV_DEV_ID("sh_siu", &mstp_clks[SYMSTP231]), /* SIU */
CLKDEV_DEV_ID("sh_cmt.10", &mstp_clks[SYMSTP229]), /* CMT10 */
CLKDEV_DEV_ID("sh_irda", &mstp_clks[SYMSTP225]), /* IRDA */
CLKDEV_DEV_ID("i2c-sh_mobile.1", &mstp_clks[SYMSTP223]), /* IIC1 */
CLKDEV_DEV_ID("r8a66597_hcd.0", &mstp_clks[SYMSTP222]), /* USBHS */
CLKDEV_DEV_ID("r8a66597_udc.0", &mstp_clks[SYMSTP222]), /* USBHS */
CLKDEV_DEV_ID("sh_flctl", &mstp_clks[SYMSTP215]), /* FLCTL */
CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[SYMSTP214]), /* SDHI0 */
CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[SYMSTP213]), /* SDHI1 */
CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[SYMSTP211]), /* SDHI2 */
CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[CMMSTP003]), /* KEYSC */
};
void __init sh7367_clock_init(void)
{
int k, ret = 0;
for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
ret = clk_register(main_clks[k]);
if (!ret)
ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
if (!ret)
ret = sh_clk_div6_register(div6_clks, DIV6_NR);
if (!ret)
ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
clkdev_add_table(lookups, ARRAY_SIZE(lookups));
if (!ret)
clk_init();
else
panic("failed to setup sh7367 clocks\n");
}
|
