2 * sh73a0 clock framework support
4 * Copyright (C) 2010 Magnus Damm
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
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 #include <linux/init.h>
20 #include <linux/kernel.h>
22 #include <linux/sh_clk.h>
23 #include <linux/clkdev.h>
24 #include <mach/common.h>
26 #define FRQCRA 0xe6150000
27 #define FRQCRB 0xe6150004
28 #define FRQCRD 0xe61500e4
29 #define VCLKCR1 0xe6150008
30 #define VCLKCR2 0xe615000C
31 #define VCLKCR3 0xe615001C
32 #define ZBCKCR 0xe6150010
33 #define FLCKCR 0xe6150014
34 #define SD0CKCR 0xe6150074
35 #define SD1CKCR 0xe6150078
36 #define SD2CKCR 0xe615007C
37 #define FSIACKCR 0xe6150018
38 #define FSIBCKCR 0xe6150090
39 #define SUBCKCR 0xe6150080
40 #define SPUACKCR 0xe6150084
41 #define SPUVCKCR 0xe6150094
42 #define MSUCKCR 0xe6150088
43 #define HSICKCR 0xe615008C
44 #define MFCK1CR 0xe6150098
45 #define MFCK2CR 0xe615009C
46 #define DSITCKCR 0xe6150060
47 #define DSI0PCKCR 0xe6150064
48 #define DSI1PCKCR 0xe6150068
49 #define DSI0PHYCR 0xe615006C
50 #define DSI1PHYCR 0xe6150070
51 #define PLLECR 0xe61500d0
52 #define PLL0CR 0xe61500d8
53 #define PLL1CR 0xe6150028
54 #define PLL2CR 0xe615002c
55 #define PLL3CR 0xe61500dc
56 #define SMSTPCR0 0xe6150130
57 #define SMSTPCR1 0xe6150134
58 #define SMSTPCR2 0xe6150138
59 #define SMSTPCR3 0xe615013c
60 #define SMSTPCR4 0xe6150140
61 #define SMSTPCR5 0xe6150144
62 #define CKSCR 0xe61500c0
64 /* Fixed 32 KHz root clock from EXTALR pin */
65 static struct clk r_clk = {
70 * 26MHz default rate for the EXTAL1 root input clock.
71 * If needed, reset this with clk_set_rate() from the platform code.
73 struct clk sh73a0_extal1_clk = {
78 * 48MHz default rate for the EXTAL2 root input clock.
79 * If needed, reset this with clk_set_rate() from the platform code.
81 struct clk sh73a0_extal2_clk = {
85 /* A fixed divide-by-2 block */
86 static unsigned long div2_recalc(struct clk *clk)
88 return clk->parent->rate / 2;
91 static struct clk_ops div2_clk_ops = {
92 .recalc = div2_recalc,
95 static unsigned long div7_recalc(struct clk *clk)
97 return clk->parent->rate / 7;
100 static struct clk_ops div7_clk_ops = {
101 .recalc = div7_recalc,
104 static unsigned long div13_recalc(struct clk *clk)
106 return clk->parent->rate / 13;
109 static struct clk_ops div13_clk_ops = {
110 .recalc = div13_recalc,
113 /* Divide extal1 by two */
114 static struct clk extal1_div2_clk = {
115 .ops = &div2_clk_ops,
116 .parent = &sh73a0_extal1_clk,
119 /* Divide extal2 by two */
120 static struct clk extal2_div2_clk = {
121 .ops = &div2_clk_ops,
122 .parent = &sh73a0_extal2_clk,
125 static struct clk_ops main_clk_ops = {
126 .recalc = followparent_recalc,
130 static struct clk main_clk = {
131 .ops = &main_clk_ops,
134 static struct clk main_div2_clk = {
135 .ops = &div2_clk_ops,
139 /* PLL0, PLL1, PLL2, PLL3 */
140 static unsigned long pll_recalc(struct clk *clk)
142 unsigned long mult = 1;
144 if (__raw_readl(PLLECR) & (1 << clk->enable_bit)) {
145 mult = (((__raw_readl(clk->enable_reg) >> 24) & 0x3f) + 1);
146 /* handle CFG bit for PLL1 and PLL2 */
147 switch (clk->enable_bit) {
150 if (__raw_readl(clk->enable_reg) & (1 << 20))
155 return clk->parent->rate * mult;
158 static struct clk_ops pll_clk_ops = {
159 .recalc = pll_recalc,
162 static struct clk pll0_clk = {
164 .flags = CLK_ENABLE_ON_INIT,
166 .enable_reg = (void __iomem *)PLL0CR,
170 static struct clk pll1_clk = {
172 .flags = CLK_ENABLE_ON_INIT,
174 .enable_reg = (void __iomem *)PLL1CR,
178 static struct clk pll2_clk = {
180 .flags = CLK_ENABLE_ON_INIT,
182 .enable_reg = (void __iomem *)PLL2CR,
186 static struct clk pll3_clk = {
188 .flags = CLK_ENABLE_ON_INIT,
190 .enable_reg = (void __iomem *)PLL3CR,
195 static struct clk pll1_div2_clk = {
196 .ops = &div2_clk_ops,
200 static struct clk pll1_div7_clk = {
201 .ops = &div7_clk_ops,
205 static struct clk pll1_div13_clk = {
206 .ops = &div13_clk_ops,
210 /* External input clock */
211 struct clk sh73a0_extcki_clk = {
214 struct clk sh73a0_extalr_clk = {
217 static struct clk *main_clks[] = {
236 static void div4_kick(struct clk *clk)
240 /* set KICK bit in FRQCRB to update hardware setting */
241 value = __raw_readl(FRQCRB);
243 __raw_writel(value, FRQCRB);
246 static int divisors[] = { 2, 3, 4, 6, 8, 12, 16, 18,
249 static struct clk_div_mult_table div4_div_mult_table = {
250 .divisors = divisors,
251 .nr_divisors = ARRAY_SIZE(divisors),
254 static struct clk_div4_table div4_table = {
255 .div_mult_table = &div4_div_mult_table,
259 enum { DIV4_I, DIV4_ZG, DIV4_M3, DIV4_B, DIV4_M1, DIV4_M2,
260 DIV4_Z, DIV4_ZTR, DIV4_ZT, DIV4_ZX, DIV4_HP, DIV4_NR };
262 #define DIV4(_reg, _bit, _mask, _flags) \
263 SH_CLK_DIV4(&pll1_clk, _reg, _bit, _mask, _flags)
265 static struct clk div4_clks[DIV4_NR] = {
266 [DIV4_I] = DIV4(FRQCRA, 20, 0xfff, CLK_ENABLE_ON_INIT),
267 [DIV4_ZG] = DIV4(FRQCRA, 16, 0xbff, CLK_ENABLE_ON_INIT),
268 [DIV4_M3] = DIV4(FRQCRA, 12, 0xfff, CLK_ENABLE_ON_INIT),
269 [DIV4_B] = DIV4(FRQCRA, 8, 0xfff, CLK_ENABLE_ON_INIT),
270 [DIV4_M1] = DIV4(FRQCRA, 4, 0xfff, 0),
271 [DIV4_M2] = DIV4(FRQCRA, 0, 0xfff, 0),
272 [DIV4_Z] = DIV4(FRQCRB, 24, 0xbff, 0),
273 [DIV4_ZTR] = DIV4(FRQCRB, 20, 0xfff, 0),
274 [DIV4_ZT] = DIV4(FRQCRB, 16, 0xfff, 0),
275 [DIV4_ZX] = DIV4(FRQCRB, 12, 0xfff, 0),
276 [DIV4_HP] = DIV4(FRQCRB, 4, 0xfff, 0),
279 enum { DIV6_VCK1, DIV6_VCK2, DIV6_VCK3, DIV6_ZB1,
280 DIV6_FLCTL, DIV6_SDHI0, DIV6_SDHI1, DIV6_SDHI2,
281 DIV6_FSIA, DIV6_FSIB, DIV6_SUB,
282 DIV6_SPUA, DIV6_SPUV, DIV6_MSU,
283 DIV6_HSI, DIV6_MFG1, DIV6_MFG2,
284 DIV6_DSIT, DIV6_DSI0P, DIV6_DSI1P,
287 static struct clk *vck_parent[8] = {
288 [0] = &pll1_div2_clk,
290 [2] = &sh73a0_extcki_clk,
291 [3] = &sh73a0_extal2_clk,
292 [4] = &main_div2_clk,
293 [5] = &sh73a0_extalr_clk,
297 static struct clk *pll_parent[4] = {
298 [0] = &pll1_div2_clk,
300 [2] = &pll1_div13_clk,
303 static struct clk *hsi_parent[4] = {
304 [0] = &pll1_div2_clk,
306 [2] = &pll1_div7_clk,
309 static struct clk *pll_extal2_parent[] = {
310 [0] = &pll1_div2_clk,
312 [2] = &sh73a0_extal2_clk,
313 [3] = &sh73a0_extal2_clk,
316 static struct clk *dsi_parent[8] = {
317 [0] = &pll1_div2_clk,
320 [3] = &sh73a0_extal2_clk,
321 [4] = &sh73a0_extcki_clk,
324 static struct clk div6_clks[DIV6_NR] = {
325 [DIV6_VCK1] = SH_CLK_DIV6_EXT(VCLKCR1, 0,
326 vck_parent, ARRAY_SIZE(vck_parent), 12, 3),
327 [DIV6_VCK2] = SH_CLK_DIV6_EXT(VCLKCR2, 0,
328 vck_parent, ARRAY_SIZE(vck_parent), 12, 3),
329 [DIV6_VCK3] = SH_CLK_DIV6_EXT(VCLKCR3, 0,
330 vck_parent, ARRAY_SIZE(vck_parent), 12, 3),
331 [DIV6_ZB1] = SH_CLK_DIV6_EXT(ZBCKCR, 0,
332 pll_parent, ARRAY_SIZE(pll_parent), 7, 1),
333 [DIV6_FLCTL] = SH_CLK_DIV6_EXT(FLCKCR, 0,
334 pll_parent, ARRAY_SIZE(pll_parent), 7, 1),
335 [DIV6_SDHI0] = SH_CLK_DIV6_EXT(SD0CKCR, 0,
336 pll_parent, ARRAY_SIZE(pll_parent), 6, 2),
337 [DIV6_SDHI1] = SH_CLK_DIV6_EXT(SD1CKCR, 0,
338 pll_parent, ARRAY_SIZE(pll_parent), 6, 2),
339 [DIV6_SDHI2] = SH_CLK_DIV6_EXT(SD2CKCR, 0,
340 pll_parent, ARRAY_SIZE(pll_parent), 6, 2),
341 [DIV6_FSIA] = SH_CLK_DIV6_EXT(FSIACKCR, 0,
342 pll_parent, ARRAY_SIZE(pll_parent), 6, 1),
343 [DIV6_FSIB] = SH_CLK_DIV6_EXT(FSIBCKCR, 0,
344 pll_parent, ARRAY_SIZE(pll_parent), 6, 1),
345 [DIV6_SUB] = SH_CLK_DIV6_EXT(SUBCKCR, 0,
346 pll_extal2_parent, ARRAY_SIZE(pll_extal2_parent), 6, 2),
347 [DIV6_SPUA] = SH_CLK_DIV6_EXT(SPUACKCR, 0,
348 pll_extal2_parent, ARRAY_SIZE(pll_extal2_parent), 6, 2),
349 [DIV6_SPUV] = SH_CLK_DIV6_EXT(SPUVCKCR, 0,
350 pll_extal2_parent, ARRAY_SIZE(pll_extal2_parent), 6, 2),
351 [DIV6_MSU] = SH_CLK_DIV6_EXT(MSUCKCR, 0,
352 pll_parent, ARRAY_SIZE(pll_parent), 7, 1),
353 [DIV6_HSI] = SH_CLK_DIV6_EXT(HSICKCR, 0,
354 hsi_parent, ARRAY_SIZE(hsi_parent), 6, 2),
355 [DIV6_MFG1] = SH_CLK_DIV6_EXT(MFCK1CR, 0,
356 pll_parent, ARRAY_SIZE(pll_parent), 7, 1),
357 [DIV6_MFG2] = SH_CLK_DIV6_EXT(MFCK2CR, 0,
358 pll_parent, ARRAY_SIZE(pll_parent), 7, 1),
359 [DIV6_DSIT] = SH_CLK_DIV6_EXT(DSITCKCR, 0,
360 pll_parent, ARRAY_SIZE(pll_parent), 7, 1),
361 [DIV6_DSI0P] = SH_CLK_DIV6_EXT(DSI0PCKCR, 0,
362 dsi_parent, ARRAY_SIZE(dsi_parent), 12, 3),
363 [DIV6_DSI1P] = SH_CLK_DIV6_EXT(DSI1PCKCR, 0,
364 dsi_parent, ARRAY_SIZE(dsi_parent), 12, 3),
368 MSTP129, MSTP128, MSTP127, MSTP126, MSTP125, MSTP118, MSTP116, MSTP100,
370 MSTP207, MSTP206, MSTP204, MSTP203, MSTP202, MSTP201, MSTP200,
371 MSTP331, MSTP329, MSTP325, MSTP323, MSTP318,
372 MSTP314, MSTP313, MSTP312, MSTP311,
373 MSTP411, MSTP410, MSTP403,
376 #define MSTP(_parent, _reg, _bit, _flags) \
377 SH_CLK_MSTP32(_parent, _reg, _bit, _flags)
379 static struct clk mstp_clks[MSTP_NR] = {
380 [MSTP001] = MSTP(&div4_clks[DIV4_HP], SMSTPCR0, 1, 0), /* IIC2 */
381 [MSTP129] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 29, 0), /* CEU1 */
382 [MSTP128] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 28, 0), /* CSI2-RX1 */
383 [MSTP127] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 27, 0), /* CEU0 */
384 [MSTP126] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 26, 0), /* CSI2-RX0 */
385 [MSTP125] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR1, 25, 0), /* TMU0 */
386 [MSTP118] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 18, 0), /* DSITX0 */
387 [MSTP116] = MSTP(&div4_clks[DIV4_HP], SMSTPCR1, 16, 0), /* IIC0 */
388 [MSTP100] = MSTP(&div4_clks[DIV4_B], SMSTPCR1, 0, 0), /* LCDC0 */
389 [MSTP219] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 19, 0), /* SCIFA7 */
390 [MSTP207] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 7, 0), /* SCIFA5 */
391 [MSTP206] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 6, 0), /* SCIFB */
392 [MSTP204] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 4, 0), /* SCIFA0 */
393 [MSTP203] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 3, 0), /* SCIFA1 */
394 [MSTP202] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 2, 0), /* SCIFA2 */
395 [MSTP201] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 1, 0), /* SCIFA3 */
396 [MSTP200] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR2, 0, 0), /* SCIFA4 */
397 [MSTP331] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR3, 31, 0), /* SCIFA6 */
398 [MSTP329] = MSTP(&r_clk, SMSTPCR3, 29, 0), /* CMT10 */
399 [MSTP325] = MSTP(&div6_clks[DIV6_SUB], SMSTPCR3, 25, 0), /* IrDA */
400 [MSTP323] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 23, 0), /* IIC1 */
401 [MSTP318] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 18, 0), /* SY-DMAC */
402 [MSTP314] = MSTP(&div6_clks[DIV6_SDHI0], SMSTPCR3, 14, 0), /* SDHI0 */
403 [MSTP313] = MSTP(&div6_clks[DIV6_SDHI1], SMSTPCR3, 13, 0), /* SDHI1 */
404 [MSTP312] = MSTP(&div4_clks[DIV4_HP], SMSTPCR3, 12, 0), /* MMCIF0 */
405 [MSTP311] = MSTP(&div6_clks[DIV6_SDHI2], SMSTPCR3, 11, 0), /* SDHI2 */
406 [MSTP411] = MSTP(&div4_clks[DIV4_HP], SMSTPCR4, 11, 0), /* IIC3 */
407 [MSTP410] = MSTP(&div4_clks[DIV4_HP], SMSTPCR4, 10, 0), /* IIC4 */
408 [MSTP403] = MSTP(&r_clk, SMSTPCR4, 3, 0), /* KEYSC */
411 static struct clk_lookup lookups[] = {
413 CLKDEV_CON_ID("r_clk", &r_clk),
416 CLKDEV_CON_ID("vck1_clk", &div6_clks[DIV6_VCK1]),
417 CLKDEV_CON_ID("vck2_clk", &div6_clks[DIV6_VCK2]),
418 CLKDEV_CON_ID("vck3_clk", &div6_clks[DIV6_VCK3]),
419 CLKDEV_CON_ID("sdhi0_clk", &div6_clks[DIV6_SDHI0]),
420 CLKDEV_CON_ID("sdhi1_clk", &div6_clks[DIV6_SDHI1]),
421 CLKDEV_CON_ID("sdhi2_clk", &div6_clks[DIV6_SDHI2]),
422 CLKDEV_ICK_ID("dsit_clk", "sh-mipi-dsi.0", &div6_clks[DIV6_DSIT]),
423 CLKDEV_ICK_ID("dsit_clk", "sh-mipi-dsi.1", &div6_clks[DIV6_DSIT]),
424 CLKDEV_ICK_ID("dsi0p_clk", "sh-mipi-dsi.0", &div6_clks[DIV6_DSI0P]),
425 CLKDEV_ICK_ID("dsi1p_clk", "sh-mipi-dsi.1", &div6_clks[DIV6_DSI1P]),
428 CLKDEV_DEV_ID("i2c-sh_mobile.2", &mstp_clks[MSTP001]), /* I2C2 */
429 CLKDEV_DEV_ID("sh_mobile_ceu.1", &mstp_clks[MSTP129]), /* CEU1 */
430 CLKDEV_DEV_ID("sh-mobile-csi2.1", &mstp_clks[MSTP128]), /* CSI2-RX1 */
431 CLKDEV_DEV_ID("sh_mobile_ceu.0", &mstp_clks[MSTP127]), /* CEU0 */
432 CLKDEV_DEV_ID("sh-mobile-csi2.0", &mstp_clks[MSTP126]), /* CSI2-RX0 */
433 CLKDEV_DEV_ID("sh_tmu.0", &mstp_clks[MSTP125]), /* TMU00 */
434 CLKDEV_DEV_ID("sh_tmu.1", &mstp_clks[MSTP125]), /* TMU01 */
435 CLKDEV_DEV_ID("sh-mipi-dsi.0", &mstp_clks[MSTP118]), /* DSITX */
436 CLKDEV_DEV_ID("i2c-sh_mobile.0", &mstp_clks[MSTP116]), /* I2C0 */
437 CLKDEV_DEV_ID("sh_mobile_lcdc_fb.0", &mstp_clks[MSTP100]), /* LCDC0 */
438 CLKDEV_DEV_ID("sh-sci.7", &mstp_clks[MSTP219]), /* SCIFA7 */
439 CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP207]), /* SCIFA5 */
440 CLKDEV_DEV_ID("sh-sci.8", &mstp_clks[MSTP206]), /* SCIFB */
441 CLKDEV_DEV_ID("sh-sci.0", &mstp_clks[MSTP204]), /* SCIFA0 */
442 CLKDEV_DEV_ID("sh-sci.1", &mstp_clks[MSTP203]), /* SCIFA1 */
443 CLKDEV_DEV_ID("sh-sci.2", &mstp_clks[MSTP202]), /* SCIFA2 */
444 CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP201]), /* SCIFA3 */
445 CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP200]), /* SCIFA4 */
446 CLKDEV_DEV_ID("sh-sci.6", &mstp_clks[MSTP331]), /* SCIFA6 */
447 CLKDEV_DEV_ID("sh_cmt.10", &mstp_clks[MSTP329]), /* CMT10 */
448 CLKDEV_DEV_ID("sh_irda.0", &mstp_clks[MSTP325]), /* IrDA */
449 CLKDEV_DEV_ID("i2c-sh_mobile.1", &mstp_clks[MSTP323]), /* I2C1 */
450 CLKDEV_DEV_ID("sh-dma-engine.0", &mstp_clks[MSTP318]), /* SY-DMAC */
451 CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]), /* SDHI0 */
452 CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP313]), /* SDHI1 */
453 CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[MSTP312]), /* MMCIF0 */
454 CLKDEV_DEV_ID("sh_mobile_sdhi.2", &mstp_clks[MSTP311]), /* SDHI2 */
455 CLKDEV_DEV_ID("i2c-sh_mobile.3", &mstp_clks[MSTP411]), /* I2C3 */
456 CLKDEV_DEV_ID("i2c-sh_mobile.4", &mstp_clks[MSTP410]), /* I2C4 */
457 CLKDEV_DEV_ID("sh_keysc.0", &mstp_clks[MSTP403]), /* KEYSC */
460 void __init sh73a0_clock_init(void)
464 /* Set SDHI clocks to a known state */
465 __raw_writel(0x108, SD0CKCR);
466 __raw_writel(0x108, SD1CKCR);
467 __raw_writel(0x108, SD2CKCR);
469 /* detect main clock parent */
470 switch ((__raw_readl(CKSCR) >> 28) & 0x03) {
472 main_clk.parent = &sh73a0_extal1_clk;
475 main_clk.parent = &extal1_div2_clk;
478 main_clk.parent = &sh73a0_extal2_clk;
481 main_clk.parent = &extal2_div2_clk;
485 for (k = 0; !ret && (k < ARRAY_SIZE(main_clks)); k++)
486 ret = clk_register(main_clks[k]);
489 ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
492 ret = sh_clk_div6_reparent_register(div6_clks, DIV6_NR);
495 ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
497 clkdev_add_table(lookups, ARRAY_SIZE(lookups));
502 panic("failed to setup sh73a0 clocks\n");