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Binghua Duan02c981c2011-07-08 17:40:12 +08001/*
Barry Song7bf21bc2014-01-15 14:11:34 +08002 * common clks module for all SiRF SoCs
Binghua Duan02c981c2011-07-08 17:40:12 +08003 *
Barry Song77366922014-02-12 22:16:11 +08004 * Copyright (c) 2011 - 2014 Cambridge Silicon Radio Limited, a CSR plc group
5 * company.
Binghua Duan02c981c2011-07-08 17:40:12 +08006 *
7 * Licensed under GPLv2 or later.
8 */
9
Stephen Boydfdb94052015-06-19 15:00:46 -070010#include <linux/clk.h>
11
Binghua Duan02c981c2011-07-08 17:40:12 +080012#define KHZ 1000
13#define MHZ (KHZ * KHZ)
14
Stephen Boydf53f5512015-05-01 12:36:24 -070015static void __iomem *sirfsoc_clk_vbase;
16static void __iomem *sirfsoc_rsc_vbase;
Barry Song7bf21bc2014-01-15 14:11:34 +080017static struct clk_onecell_data clk_data;
18
Binghua Duan198678b2012-08-20 06:42:36 +000019/*
20 * SiRFprimaII clock controller
21 * - 2 oscillators: osc-26MHz, rtc-32.768KHz
22 * - 3 standard configurable plls: pll1, pll2 & pll3
23 * - 2 exclusive plls: usb phy pll and sata phy pll
24 * - 8 clock domains: cpu/cpudiv, mem/memdiv, sys/io, dsp, graphic, multimedia,
25 * display and sdphy.
26 * Each clock domain can select its own clock source from five clock sources,
27 * X_XIN, X_XINW, PLL1, PLL2 and PLL3. The domain clock is used as the source
28 * clock of the group clock.
29 * - dsp domain: gps, mf
30 * - io domain: dmac, nand, audio, uart, i2c, spi, usp, pwm, pulse
31 * - sys domain: security
32 */
33
34struct clk_pll {
35 struct clk_hw hw;
36 unsigned short regofs; /* register offset */
Binghua Duan02c981c2011-07-08 17:40:12 +080037};
38
Binghua Duan198678b2012-08-20 06:42:36 +000039#define to_pllclk(_hw) container_of(_hw, struct clk_pll, hw)
40
41struct clk_dmn {
42 struct clk_hw hw;
Binghua Duan02c981c2011-07-08 17:40:12 +080043 signed char enable_bit; /* enable bit: 0 ~ 63 */
44 unsigned short regofs; /* register offset */
Binghua Duan02c981c2011-07-08 17:40:12 +080045};
46
Binghua Duan198678b2012-08-20 06:42:36 +000047#define to_dmnclk(_hw) container_of(_hw, struct clk_dmn, hw)
48
49struct clk_std {
50 struct clk_hw hw;
51 signed char enable_bit; /* enable bit: 0 ~ 63 */
52};
53
54#define to_stdclk(_hw) container_of(_hw, struct clk_std, hw)
55
56static int std_clk_is_enabled(struct clk_hw *hw);
57static int std_clk_enable(struct clk_hw *hw);
58static void std_clk_disable(struct clk_hw *hw);
Binghua Duan02c981c2011-07-08 17:40:12 +080059
60static inline unsigned long clkc_readl(unsigned reg)
61{
Binghua Duan198678b2012-08-20 06:42:36 +000062 return readl(sirfsoc_clk_vbase + reg);
Binghua Duan02c981c2011-07-08 17:40:12 +080063}
64
65static inline void clkc_writel(u32 val, unsigned reg)
66{
Binghua Duan198678b2012-08-20 06:42:36 +000067 writel(val, sirfsoc_clk_vbase + reg);
Binghua Duan02c981c2011-07-08 17:40:12 +080068}
69
70/*
Binghua Duan02c981c2011-07-08 17:40:12 +080071 * std pll
72 */
Binghua Duan198678b2012-08-20 06:42:36 +000073
74static unsigned long pll_clk_recalc_rate(struct clk_hw *hw,
75 unsigned long parent_rate)
Binghua Duan02c981c2011-07-08 17:40:12 +080076{
Binghua Duan198678b2012-08-20 06:42:36 +000077 unsigned long fin = parent_rate;
78 struct clk_pll *clk = to_pllclk(hw);
Binghua Duan02c981c2011-07-08 17:40:12 +080079 u32 regcfg2 = clk->regofs + SIRFSOC_CLKC_PLL1_CFG2 -
80 SIRFSOC_CLKC_PLL1_CFG0;
81
82 if (clkc_readl(regcfg2) & BIT(2)) {
83 /* pll bypass mode */
Binghua Duan198678b2012-08-20 06:42:36 +000084 return fin;
Binghua Duan02c981c2011-07-08 17:40:12 +080085 } else {
86 /* fout = fin * nf / nr / od */
87 u32 cfg0 = clkc_readl(clk->regofs);
88 u32 nf = (cfg0 & (BIT(13) - 1)) + 1;
89 u32 nr = ((cfg0 >> 13) & (BIT(6) - 1)) + 1;
90 u32 od = ((cfg0 >> 19) & (BIT(4) - 1)) + 1;
91 WARN_ON(fin % MHZ);
Binghua Duan198678b2012-08-20 06:42:36 +000092 return fin / MHZ * nf / nr / od * MHZ;
Binghua Duan02c981c2011-07-08 17:40:12 +080093 }
Binghua Duan02c981c2011-07-08 17:40:12 +080094}
95
Binghua Duan198678b2012-08-20 06:42:36 +000096static long pll_clk_round_rate(struct clk_hw *hw, unsigned long rate,
97 unsigned long *parent_rate)
Binghua Duan02c981c2011-07-08 17:40:12 +080098{
Binghua Duan198678b2012-08-20 06:42:36 +000099 unsigned long fin, nf, nr, od;
Barry Song7bf21bc2014-01-15 14:11:34 +0800100 u64 dividend;
Binghua Duan198678b2012-08-20 06:42:36 +0000101
102 /*
103 * fout = fin * nf / (nr * od);
104 * set od = 1, nr = fin/MHz, so fout = nf * MHz
105 */
106 rate = rate - rate % MHZ;
107
108 nf = rate / MHZ;
109 if (nf > BIT(13))
110 nf = BIT(13);
111 if (nf < 1)
112 nf = 1;
113
114 fin = *parent_rate;
115
116 nr = fin / MHZ;
117 if (nr > BIT(6))
118 nr = BIT(6);
119 od = 1;
120
Barry Song7bf21bc2014-01-15 14:11:34 +0800121 dividend = (u64)fin * nf;
122 do_div(dividend, nr * od);
123
124 return (long)dividend;
Binghua Duan198678b2012-08-20 06:42:36 +0000125}
126
127static int pll_clk_set_rate(struct clk_hw *hw, unsigned long rate,
128 unsigned long parent_rate)
129{
130 struct clk_pll *clk = to_pllclk(hw);
Binghua Duan02c981c2011-07-08 17:40:12 +0800131 unsigned long fin, nf, nr, od, reg;
132
133 /*
134 * fout = fin * nf / (nr * od);
135 * set od = 1, nr = fin/MHz, so fout = nf * MHz
136 */
137
138 nf = rate / MHZ;
139 if (unlikely((rate % MHZ) || nf > BIT(13) || nf < 1))
140 return -EINVAL;
141
Binghua Duan198678b2012-08-20 06:42:36 +0000142 fin = parent_rate;
Binghua Duan02c981c2011-07-08 17:40:12 +0800143 BUG_ON(fin < MHZ);
144
145 nr = fin / MHZ;
146 BUG_ON((fin % MHZ) || nr > BIT(6));
147
148 od = 1;
149
150 reg = (nf - 1) | ((nr - 1) << 13) | ((od - 1) << 19);
151 clkc_writel(reg, clk->regofs);
152
153 reg = clk->regofs + SIRFSOC_CLKC_PLL1_CFG1 - SIRFSOC_CLKC_PLL1_CFG0;
154 clkc_writel((nf >> 1) - 1, reg);
155
156 reg = clk->regofs + SIRFSOC_CLKC_PLL1_CFG2 - SIRFSOC_CLKC_PLL1_CFG0;
157 while (!(clkc_readl(reg) & BIT(6)))
158 cpu_relax();
159
Binghua Duan02c981c2011-07-08 17:40:12 +0800160 return 0;
161}
162
Barry Song7bf21bc2014-01-15 14:11:34 +0800163static long cpu_clk_round_rate(struct clk_hw *hw, unsigned long rate,
164 unsigned long *parent_rate)
165{
166 /*
167 * SiRF SoC has not cpu clock control,
168 * So bypass to it's parent pll.
169 */
Stephen Boydb17dbff2015-07-30 17:20:57 -0700170 struct clk_hw *parent_clk = clk_hw_get_parent(hw);
171 struct clk_hw *pll_parent_clk = clk_hw_get_parent(parent_clk);
172 unsigned long pll_parent_rate = clk_hw_get_rate(pll_parent_clk);
173 return pll_clk_round_rate(parent_clk, rate, &pll_parent_rate);
Barry Song7bf21bc2014-01-15 14:11:34 +0800174}
175
176static unsigned long cpu_clk_recalc_rate(struct clk_hw *hw,
177 unsigned long parent_rate)
178{
179 /*
180 * SiRF SoC has not cpu clock control,
181 * So return the parent pll rate.
182 */
Stephen Boydb17dbff2015-07-30 17:20:57 -0700183 struct clk_hw *parent_clk = clk_hw_get_parent(hw);
184 return clk_hw_get_rate(parent_clk);
Barry Song7bf21bc2014-01-15 14:11:34 +0800185}
186
Binghua Duan02c981c2011-07-08 17:40:12 +0800187static struct clk_ops std_pll_ops = {
Binghua Duan198678b2012-08-20 06:42:36 +0000188 .recalc_rate = pll_clk_recalc_rate,
189 .round_rate = pll_clk_round_rate,
190 .set_rate = pll_clk_set_rate,
Binghua Duan02c981c2011-07-08 17:40:12 +0800191};
192
Krzysztof Kozlowski45195b82015-04-28 13:46:21 +0900193static const char * const pll_clk_parents[] = {
Binghua Duan198678b2012-08-20 06:42:36 +0000194 "osc",
195};
196
197static struct clk_init_data clk_pll1_init = {
198 .name = "pll1",
199 .ops = &std_pll_ops,
200 .parent_names = pll_clk_parents,
201 .num_parents = ARRAY_SIZE(pll_clk_parents),
202};
203
204static struct clk_init_data clk_pll2_init = {
205 .name = "pll2",
206 .ops = &std_pll_ops,
207 .parent_names = pll_clk_parents,
208 .num_parents = ARRAY_SIZE(pll_clk_parents),
209};
210
211static struct clk_init_data clk_pll3_init = {
212 .name = "pll3",
213 .ops = &std_pll_ops,
214 .parent_names = pll_clk_parents,
215 .num_parents = ARRAY_SIZE(pll_clk_parents),
216};
217
218static struct clk_pll clk_pll1 = {
Binghua Duan02c981c2011-07-08 17:40:12 +0800219 .regofs = SIRFSOC_CLKC_PLL1_CFG0,
Binghua Duan198678b2012-08-20 06:42:36 +0000220 .hw = {
221 .init = &clk_pll1_init,
222 },
Binghua Duan02c981c2011-07-08 17:40:12 +0800223};
224
Binghua Duan198678b2012-08-20 06:42:36 +0000225static struct clk_pll clk_pll2 = {
Binghua Duan02c981c2011-07-08 17:40:12 +0800226 .regofs = SIRFSOC_CLKC_PLL2_CFG0,
Binghua Duan198678b2012-08-20 06:42:36 +0000227 .hw = {
228 .init = &clk_pll2_init,
229 },
Binghua Duan02c981c2011-07-08 17:40:12 +0800230};
231
Binghua Duan198678b2012-08-20 06:42:36 +0000232static struct clk_pll clk_pll3 = {
Binghua Duan02c981c2011-07-08 17:40:12 +0800233 .regofs = SIRFSOC_CLKC_PLL3_CFG0,
Binghua Duan198678b2012-08-20 06:42:36 +0000234 .hw = {
235 .init = &clk_pll3_init,
236 },
Binghua Duan02c981c2011-07-08 17:40:12 +0800237};
238
239/*
Binghua Duan198678b2012-08-20 06:42:36 +0000240 * usb uses specified pll
Binghua Duan02c981c2011-07-08 17:40:12 +0800241 */
242
Binghua Duan198678b2012-08-20 06:42:36 +0000243static int usb_pll_clk_enable(struct clk_hw *hw)
Binghua Duan02c981c2011-07-08 17:40:12 +0800244{
Binghua Duan198678b2012-08-20 06:42:36 +0000245 u32 reg = readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
246 reg &= ~(SIRFSOC_USBPHY_PLL_POWERDOWN | SIRFSOC_USBPHY_PLL_BYPASS);
247 writel(reg, sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
248 while (!(readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL) &
249 SIRFSOC_USBPHY_PLL_LOCK))
250 cpu_relax();
251
252 return 0;
253}
254
255static void usb_pll_clk_disable(struct clk_hw *clk)
256{
257 u32 reg = readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
258 reg |= (SIRFSOC_USBPHY_PLL_POWERDOWN | SIRFSOC_USBPHY_PLL_BYPASS);
259 writel(reg, sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
260}
261
262static unsigned long usb_pll_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
263{
264 u32 reg = readl(sirfsoc_rsc_vbase + SIRFSOC_USBPHY_PLL_CTRL);
265 return (reg & SIRFSOC_USBPHY_PLL_BYPASS) ? parent_rate : 48*MHZ;
266}
267
268static struct clk_ops usb_pll_ops = {
269 .enable = usb_pll_clk_enable,
270 .disable = usb_pll_clk_disable,
271 .recalc_rate = usb_pll_clk_recalc_rate,
272};
273
274static struct clk_init_data clk_usb_pll_init = {
275 .name = "usb_pll",
276 .ops = &usb_pll_ops,
277 .parent_names = pll_clk_parents,
278 .num_parents = ARRAY_SIZE(pll_clk_parents),
279};
280
281static struct clk_hw usb_pll_clk_hw = {
282 .init = &clk_usb_pll_init,
283};
284
285/*
286 * clock domains - cpu, mem, sys/io, dsp, gfx
287 */
288
Krzysztof Kozlowski45195b82015-04-28 13:46:21 +0900289static const char * const dmn_clk_parents[] = {
Binghua Duan198678b2012-08-20 06:42:36 +0000290 "rtc",
291 "osc",
292 "pll1",
293 "pll2",
294 "pll3",
295};
296
297static u8 dmn_clk_get_parent(struct clk_hw *hw)
298{
299 struct clk_dmn *clk = to_dmnclk(hw);
Binghua Duan02c981c2011-07-08 17:40:12 +0800300 u32 cfg = clkc_readl(clk->regofs);
Binghua Duan198678b2012-08-20 06:42:36 +0000301
302 /* parent of io domain can only be pll3 */
303 if (strcmp(hw->init->name, "io") == 0)
304 return 4;
305
Binghua Duan02c981c2011-07-08 17:40:12 +0800306 WARN_ON((cfg & (BIT(3) - 1)) > 4);
Binghua Duan198678b2012-08-20 06:42:36 +0000307
308 return cfg & (BIT(3) - 1);
Binghua Duan02c981c2011-07-08 17:40:12 +0800309}
310
Binghua Duan198678b2012-08-20 06:42:36 +0000311static int dmn_clk_set_parent(struct clk_hw *hw, u8 parent)
Binghua Duan02c981c2011-07-08 17:40:12 +0800312{
Binghua Duan198678b2012-08-20 06:42:36 +0000313 struct clk_dmn *clk = to_dmnclk(hw);
Binghua Duan02c981c2011-07-08 17:40:12 +0800314 u32 cfg = clkc_readl(clk->regofs);
Binghua Duan198678b2012-08-20 06:42:36 +0000315
316 /* parent of io domain can only be pll3 */
317 if (strcmp(hw->init->name, "io") == 0)
318 return -EINVAL;
319
320 cfg &= ~(BIT(3) - 1);
321 clkc_writel(cfg | parent, clk->regofs);
322 /* BIT(3) - switching status: 1 - busy, 0 - done */
323 while (clkc_readl(clk->regofs) & BIT(3))
324 cpu_relax();
325
326 return 0;
Binghua Duan02c981c2011-07-08 17:40:12 +0800327}
328
Binghua Duan198678b2012-08-20 06:42:36 +0000329static unsigned long dmn_clk_recalc_rate(struct clk_hw *hw,
330 unsigned long parent_rate)
331
Binghua Duan02c981c2011-07-08 17:40:12 +0800332{
Binghua Duan198678b2012-08-20 06:42:36 +0000333 unsigned long fin = parent_rate;
334 struct clk_dmn *clk = to_dmnclk(hw);
335
Binghua Duan02c981c2011-07-08 17:40:12 +0800336 u32 cfg = clkc_readl(clk->regofs);
Binghua Duan198678b2012-08-20 06:42:36 +0000337
Binghua Duan02c981c2011-07-08 17:40:12 +0800338 if (cfg & BIT(24)) {
339 /* fcd bypass mode */
Binghua Duan198678b2012-08-20 06:42:36 +0000340 return fin;
Binghua Duan02c981c2011-07-08 17:40:12 +0800341 } else {
342 /*
343 * wait count: bit[19:16], hold count: bit[23:20]
344 */
345 u32 wait = (cfg >> 16) & (BIT(4) - 1);
346 u32 hold = (cfg >> 20) & (BIT(4) - 1);
347
Binghua Duan198678b2012-08-20 06:42:36 +0000348 return fin / (wait + hold + 2);
Binghua Duan02c981c2011-07-08 17:40:12 +0800349 }
Binghua Duan02c981c2011-07-08 17:40:12 +0800350}
351
Binghua Duan198678b2012-08-20 06:42:36 +0000352static long dmn_clk_round_rate(struct clk_hw *hw, unsigned long rate,
353 unsigned long *parent_rate)
Binghua Duan02c981c2011-07-08 17:40:12 +0800354{
355 unsigned long fin;
Binghua Duan198678b2012-08-20 06:42:36 +0000356 unsigned ratio, wait, hold;
357 unsigned bits = (strcmp(hw->init->name, "mem") == 0) ? 3 : 4;
Binghua Duan02c981c2011-07-08 17:40:12 +0800358
Binghua Duan198678b2012-08-20 06:42:36 +0000359 fin = *parent_rate;
360 ratio = fin / rate;
361
362 if (ratio < 2)
363 ratio = 2;
364 if (ratio > BIT(bits + 1))
365 ratio = BIT(bits + 1);
366
367 wait = (ratio >> 1) - 1;
368 hold = ratio - wait - 2;
369
370 return fin / (wait + hold + 2);
371}
372
373static int dmn_clk_set_rate(struct clk_hw *hw, unsigned long rate,
374 unsigned long parent_rate)
375{
376 struct clk_dmn *clk = to_dmnclk(hw);
377 unsigned long fin;
378 unsigned ratio, wait, hold, reg;
379 unsigned bits = (strcmp(hw->init->name, "mem") == 0) ? 3 : 4;
380
381 fin = parent_rate;
Binghua Duan02c981c2011-07-08 17:40:12 +0800382 ratio = fin / rate;
383
384 if (unlikely(ratio < 2 || ratio > BIT(bits + 1)))
385 return -EINVAL;
386
387 WARN_ON(fin % rate);
388
389 wait = (ratio >> 1) - 1;
390 hold = ratio - wait - 2;
391
392 reg = clkc_readl(clk->regofs);
393 reg &= ~(((BIT(bits) - 1) << 16) | ((BIT(bits) - 1) << 20));
394 reg |= (wait << 16) | (hold << 20) | BIT(25);
395 clkc_writel(reg, clk->regofs);
396
397 /* waiting FCD been effective */
398 while (clkc_readl(clk->regofs) & BIT(25))
399 cpu_relax();
400
Binghua Duan02c981c2011-07-08 17:40:12 +0800401 return 0;
402}
403
Barry Song7bf21bc2014-01-15 14:11:34 +0800404static int cpu_clk_set_rate(struct clk_hw *hw, unsigned long rate,
405 unsigned long parent_rate)
406{
407 int ret1, ret2;
408 struct clk *cur_parent;
409
410 if (rate == clk_get_rate(clk_pll1.hw.clk)) {
411 ret1 = clk_set_parent(hw->clk, clk_pll1.hw.clk);
412 return ret1;
413 }
414
415 if (rate == clk_get_rate(clk_pll2.hw.clk)) {
416 ret1 = clk_set_parent(hw->clk, clk_pll2.hw.clk);
417 return ret1;
418 }
419
420 if (rate == clk_get_rate(clk_pll3.hw.clk)) {
421 ret1 = clk_set_parent(hw->clk, clk_pll3.hw.clk);
422 return ret1;
423 }
424
425 cur_parent = clk_get_parent(hw->clk);
426
427 /* switch to tmp pll before setting parent clock's rate */
428 if (cur_parent == clk_pll1.hw.clk) {
429 ret1 = clk_set_parent(hw->clk, clk_pll2.hw.clk);
430 BUG_ON(ret1);
431 }
432
433 ret2 = clk_set_rate(clk_pll1.hw.clk, rate);
434
435 ret1 = clk_set_parent(hw->clk, clk_pll1.hw.clk);
436
437 return ret2 ? ret2 : ret1;
438}
439
Binghua Duan02c981c2011-07-08 17:40:12 +0800440static struct clk_ops msi_ops = {
Binghua Duan198678b2012-08-20 06:42:36 +0000441 .set_rate = dmn_clk_set_rate,
442 .round_rate = dmn_clk_round_rate,
443 .recalc_rate = dmn_clk_recalc_rate,
444 .set_parent = dmn_clk_set_parent,
445 .get_parent = dmn_clk_get_parent,
Binghua Duan02c981c2011-07-08 17:40:12 +0800446};
447
Binghua Duan198678b2012-08-20 06:42:36 +0000448static struct clk_init_data clk_mem_init = {
449 .name = "mem",
450 .ops = &msi_ops,
451 .parent_names = dmn_clk_parents,
452 .num_parents = ARRAY_SIZE(dmn_clk_parents),
453};
454
455static struct clk_dmn clk_mem = {
Binghua Duan02c981c2011-07-08 17:40:12 +0800456 .regofs = SIRFSOC_CLKC_MEM_CFG,
Binghua Duan198678b2012-08-20 06:42:36 +0000457 .hw = {
458 .init = &clk_mem_init,
Binghua Duan02c981c2011-07-08 17:40:12 +0800459 },
460};
461
Binghua Duan198678b2012-08-20 06:42:36 +0000462static struct clk_init_data clk_sys_init = {
463 .name = "sys",
464 .ops = &msi_ops,
465 .parent_names = dmn_clk_parents,
466 .num_parents = ARRAY_SIZE(dmn_clk_parents),
467 .flags = CLK_SET_RATE_GATE,
468};
469
470static struct clk_dmn clk_sys = {
471 .regofs = SIRFSOC_CLKC_SYS_CFG,
472 .hw = {
473 .init = &clk_sys_init,
474 },
475};
476
477static struct clk_init_data clk_io_init = {
478 .name = "io",
479 .ops = &msi_ops,
480 .parent_names = dmn_clk_parents,
481 .num_parents = ARRAY_SIZE(dmn_clk_parents),
482};
483
484static struct clk_dmn clk_io = {
485 .regofs = SIRFSOC_CLKC_IO_CFG,
486 .hw = {
487 .init = &clk_io_init,
488 },
489};
490
491static struct clk_ops cpu_ops = {
492 .set_parent = dmn_clk_set_parent,
493 .get_parent = dmn_clk_get_parent,
Barry Song7bf21bc2014-01-15 14:11:34 +0800494 .set_rate = cpu_clk_set_rate,
495 .round_rate = cpu_clk_round_rate,
496 .recalc_rate = cpu_clk_recalc_rate,
Binghua Duan198678b2012-08-20 06:42:36 +0000497};
498
499static struct clk_init_data clk_cpu_init = {
500 .name = "cpu",
501 .ops = &cpu_ops,
502 .parent_names = dmn_clk_parents,
503 .num_parents = ARRAY_SIZE(dmn_clk_parents),
504 .flags = CLK_SET_RATE_PARENT,
505};
506
507static struct clk_dmn clk_cpu = {
508 .regofs = SIRFSOC_CLKC_CPU_CFG,
509 .hw = {
510 .init = &clk_cpu_init,
511 },
512};
513
514static struct clk_ops dmn_ops = {
515 .is_enabled = std_clk_is_enabled,
516 .enable = std_clk_enable,
517 .disable = std_clk_disable,
518 .set_rate = dmn_clk_set_rate,
519 .round_rate = dmn_clk_round_rate,
520 .recalc_rate = dmn_clk_recalc_rate,
521 .set_parent = dmn_clk_set_parent,
522 .get_parent = dmn_clk_get_parent,
523};
524
525/* dsp, gfx, mm, lcd and vpp domain */
526
527static struct clk_init_data clk_dsp_init = {
528 .name = "dsp",
529 .ops = &dmn_ops,
530 .parent_names = dmn_clk_parents,
531 .num_parents = ARRAY_SIZE(dmn_clk_parents),
532};
533
534static struct clk_dmn clk_dsp = {
535 .regofs = SIRFSOC_CLKC_DSP_CFG,
536 .enable_bit = 0,
537 .hw = {
538 .init = &clk_dsp_init,
539 },
540};
541
542static struct clk_init_data clk_gfx_init = {
543 .name = "gfx",
544 .ops = &dmn_ops,
545 .parent_names = dmn_clk_parents,
546 .num_parents = ARRAY_SIZE(dmn_clk_parents),
547};
548
549static struct clk_dmn clk_gfx = {
550 .regofs = SIRFSOC_CLKC_GFX_CFG,
551 .enable_bit = 8,
552 .hw = {
553 .init = &clk_gfx_init,
554 },
555};
556
557static struct clk_init_data clk_mm_init = {
558 .name = "mm",
559 .ops = &dmn_ops,
560 .parent_names = dmn_clk_parents,
561 .num_parents = ARRAY_SIZE(dmn_clk_parents),
562};
563
564static struct clk_dmn clk_mm = {
565 .regofs = SIRFSOC_CLKC_MM_CFG,
566 .enable_bit = 9,
567 .hw = {
568 .init = &clk_mm_init,
569 },
570};
571
Barry Song7bf21bc2014-01-15 14:11:34 +0800572/*
573 * for atlas6, gfx2d holds the bit of prima2's clk_mm
574 */
575#define clk_gfx2d clk_mm
576
Binghua Duan198678b2012-08-20 06:42:36 +0000577static struct clk_init_data clk_lcd_init = {
578 .name = "lcd",
579 .ops = &dmn_ops,
580 .parent_names = dmn_clk_parents,
581 .num_parents = ARRAY_SIZE(dmn_clk_parents),
582};
583
584static struct clk_dmn clk_lcd = {
585 .regofs = SIRFSOC_CLKC_LCD_CFG,
586 .enable_bit = 10,
587 .hw = {
588 .init = &clk_lcd_init,
589 },
590};
591
592static struct clk_init_data clk_vpp_init = {
593 .name = "vpp",
594 .ops = &dmn_ops,
595 .parent_names = dmn_clk_parents,
596 .num_parents = ARRAY_SIZE(dmn_clk_parents),
597};
598
599static struct clk_dmn clk_vpp = {
600 .regofs = SIRFSOC_CLKC_LCD_CFG,
601 .enable_bit = 11,
602 .hw = {
603 .init = &clk_vpp_init,
604 },
605};
606
607static struct clk_init_data clk_mmc01_init = {
608 .name = "mmc01",
609 .ops = &dmn_ops,
610 .parent_names = dmn_clk_parents,
611 .num_parents = ARRAY_SIZE(dmn_clk_parents),
612};
613
Binghua Duan198678b2012-08-20 06:42:36 +0000614static struct clk_init_data clk_mmc23_init = {
615 .name = "mmc23",
616 .ops = &dmn_ops,
617 .parent_names = dmn_clk_parents,
618 .num_parents = ARRAY_SIZE(dmn_clk_parents),
619};
620
Binghua Duan198678b2012-08-20 06:42:36 +0000621static struct clk_init_data clk_mmc45_init = {
622 .name = "mmc45",
623 .ops = &dmn_ops,
624 .parent_names = dmn_clk_parents,
625 .num_parents = ARRAY_SIZE(dmn_clk_parents),
626};
627
Binghua Duan198678b2012-08-20 06:42:36 +0000628/*
629 * peripheral controllers in io domain
630 */
631
632static int std_clk_is_enabled(struct clk_hw *hw)
Binghua Duan02c981c2011-07-08 17:40:12 +0800633{
Binghua Duan198678b2012-08-20 06:42:36 +0000634 u32 reg;
635 int bit;
636 struct clk_std *clk = to_stdclk(hw);
Binghua Duan02c981c2011-07-08 17:40:12 +0800637
Binghua Duan198678b2012-08-20 06:42:36 +0000638 bit = clk->enable_bit % 32;
639 reg = clk->enable_bit / 32;
640 reg = SIRFSOC_CLKC_CLK_EN0 + reg * sizeof(reg);
Binghua Duan02c981c2011-07-08 17:40:12 +0800641
Binghua Duan198678b2012-08-20 06:42:36 +0000642 return !!(clkc_readl(reg) & BIT(bit));
643}
Binghua Duan02c981c2011-07-08 17:40:12 +0800644
Binghua Duan198678b2012-08-20 06:42:36 +0000645static int std_clk_enable(struct clk_hw *hw)
646{
647 u32 val, reg;
648 int bit;
649 struct clk_std *clk = to_stdclk(hw);
650
651 BUG_ON(clk->enable_bit < 0 || clk->enable_bit > 63);
652
653 bit = clk->enable_bit % 32;
654 reg = clk->enable_bit / 32;
655 reg = SIRFSOC_CLKC_CLK_EN0 + reg * sizeof(reg);
656
657 val = clkc_readl(reg) | BIT(bit);
658 clkc_writel(val, reg);
Binghua Duan02c981c2011-07-08 17:40:12 +0800659 return 0;
660}
Binghua Duan02c981c2011-07-08 17:40:12 +0800661
Binghua Duan198678b2012-08-20 06:42:36 +0000662static void std_clk_disable(struct clk_hw *hw)
Binghua Duan02c981c2011-07-08 17:40:12 +0800663{
Binghua Duan198678b2012-08-20 06:42:36 +0000664 u32 val, reg;
665 int bit;
666 struct clk_std *clk = to_stdclk(hw);
Binghua Duan02c981c2011-07-08 17:40:12 +0800667
Binghua Duan198678b2012-08-20 06:42:36 +0000668 BUG_ON(clk->enable_bit < 0 || clk->enable_bit > 63);
Binghua Duan02c981c2011-07-08 17:40:12 +0800669
Binghua Duan198678b2012-08-20 06:42:36 +0000670 bit = clk->enable_bit % 32;
671 reg = clk->enable_bit / 32;
672 reg = SIRFSOC_CLKC_CLK_EN0 + reg * sizeof(reg);
Binghua Duan02c981c2011-07-08 17:40:12 +0800673
Binghua Duan198678b2012-08-20 06:42:36 +0000674 val = clkc_readl(reg) & ~BIT(bit);
675 clkc_writel(val, reg);
Binghua Duan02c981c2011-07-08 17:40:12 +0800676}
Binghua Duan02c981c2011-07-08 17:40:12 +0800677
Krzysztof Kozlowski45195b82015-04-28 13:46:21 +0900678static const char * const std_clk_io_parents[] = {
Binghua Duan198678b2012-08-20 06:42:36 +0000679 "io",
680};
Binghua Duan02c981c2011-07-08 17:40:12 +0800681
Binghua Duan198678b2012-08-20 06:42:36 +0000682static struct clk_ops ios_ops = {
683 .is_enabled = std_clk_is_enabled,
684 .enable = std_clk_enable,
685 .disable = std_clk_disable,
686};
Binghua Duan02c981c2011-07-08 17:40:12 +0800687
Barry Song7bf21bc2014-01-15 14:11:34 +0800688static struct clk_init_data clk_cphif_init = {
689 .name = "cphif",
690 .ops = &ios_ops,
691 .parent_names = std_clk_io_parents,
692 .num_parents = ARRAY_SIZE(std_clk_io_parents),
693};
694
695static struct clk_std clk_cphif = {
696 .enable_bit = 20,
697 .hw = {
698 .init = &clk_cphif_init,
699 },
700};
701
Binghua Duan198678b2012-08-20 06:42:36 +0000702static struct clk_init_data clk_dmac0_init = {
703 .name = "dmac0",
704 .ops = &ios_ops,
705 .parent_names = std_clk_io_parents,
706 .num_parents = ARRAY_SIZE(std_clk_io_parents),
707};
Binghua Duan02c981c2011-07-08 17:40:12 +0800708
Binghua Duan198678b2012-08-20 06:42:36 +0000709static struct clk_std clk_dmac0 = {
710 .enable_bit = 32,
711 .hw = {
712 .init = &clk_dmac0_init,
713 },
714};
Binghua Duan02c981c2011-07-08 17:40:12 +0800715
Binghua Duan198678b2012-08-20 06:42:36 +0000716static struct clk_init_data clk_dmac1_init = {
717 .name = "dmac1",
718 .ops = &ios_ops,
719 .parent_names = std_clk_io_parents,
720 .num_parents = ARRAY_SIZE(std_clk_io_parents),
721};
Binghua Duan02c981c2011-07-08 17:40:12 +0800722
Binghua Duan198678b2012-08-20 06:42:36 +0000723static struct clk_std clk_dmac1 = {
724 .enable_bit = 33,
725 .hw = {
726 .init = &clk_dmac1_init,
727 },
728};
Binghua Duan02c981c2011-07-08 17:40:12 +0800729
Binghua Duan198678b2012-08-20 06:42:36 +0000730static struct clk_init_data clk_audio_init = {
731 .name = "audio",
732 .ops = &ios_ops,
733 .parent_names = std_clk_io_parents,
734 .num_parents = ARRAY_SIZE(std_clk_io_parents),
735};
Binghua Duan02c981c2011-07-08 17:40:12 +0800736
Binghua Duan198678b2012-08-20 06:42:36 +0000737static struct clk_std clk_audio = {
738 .enable_bit = 35,
739 .hw = {
740 .init = &clk_audio_init,
741 },
742};
Binghua Duan02c981c2011-07-08 17:40:12 +0800743
Binghua Duan198678b2012-08-20 06:42:36 +0000744static struct clk_init_data clk_uart0_init = {
745 .name = "uart0",
746 .ops = &ios_ops,
747 .parent_names = std_clk_io_parents,
748 .num_parents = ARRAY_SIZE(std_clk_io_parents),
749};
Binghua Duan02c981c2011-07-08 17:40:12 +0800750
Binghua Duan198678b2012-08-20 06:42:36 +0000751static struct clk_std clk_uart0 = {
752 .enable_bit = 36,
753 .hw = {
754 .init = &clk_uart0_init,
755 },
756};
Binghua Duan02c981c2011-07-08 17:40:12 +0800757
Binghua Duan198678b2012-08-20 06:42:36 +0000758static struct clk_init_data clk_uart1_init = {
759 .name = "uart1",
760 .ops = &ios_ops,
761 .parent_names = std_clk_io_parents,
762 .num_parents = ARRAY_SIZE(std_clk_io_parents),
763};
Binghua Duan02c981c2011-07-08 17:40:12 +0800764
Binghua Duan198678b2012-08-20 06:42:36 +0000765static struct clk_std clk_uart1 = {
766 .enable_bit = 37,
767 .hw = {
768 .init = &clk_uart1_init,
769 },
770};
Binghua Duan02c981c2011-07-08 17:40:12 +0800771
Binghua Duan198678b2012-08-20 06:42:36 +0000772static struct clk_init_data clk_uart2_init = {
773 .name = "uart2",
774 .ops = &ios_ops,
775 .parent_names = std_clk_io_parents,
776 .num_parents = ARRAY_SIZE(std_clk_io_parents),
777};
Binghua Duan02c981c2011-07-08 17:40:12 +0800778
Binghua Duan198678b2012-08-20 06:42:36 +0000779static struct clk_std clk_uart2 = {
780 .enable_bit = 38,
781 .hw = {
782 .init = &clk_uart2_init,
783 },
784};
Binghua Duan02c981c2011-07-08 17:40:12 +0800785
Binghua Duan198678b2012-08-20 06:42:36 +0000786static struct clk_init_data clk_usp0_init = {
787 .name = "usp0",
788 .ops = &ios_ops,
789 .parent_names = std_clk_io_parents,
790 .num_parents = ARRAY_SIZE(std_clk_io_parents),
791};
Binghua Duan02c981c2011-07-08 17:40:12 +0800792
Binghua Duan198678b2012-08-20 06:42:36 +0000793static struct clk_std clk_usp0 = {
794 .enable_bit = 39,
795 .hw = {
796 .init = &clk_usp0_init,
797 },
798};
Binghua Duan02c981c2011-07-08 17:40:12 +0800799
Binghua Duan198678b2012-08-20 06:42:36 +0000800static struct clk_init_data clk_usp1_init = {
801 .name = "usp1",
802 .ops = &ios_ops,
803 .parent_names = std_clk_io_parents,
804 .num_parents = ARRAY_SIZE(std_clk_io_parents),
805};
806
807static struct clk_std clk_usp1 = {
808 .enable_bit = 40,
809 .hw = {
810 .init = &clk_usp1_init,
811 },
812};
813
814static struct clk_init_data clk_usp2_init = {
815 .name = "usp2",
816 .ops = &ios_ops,
817 .parent_names = std_clk_io_parents,
818 .num_parents = ARRAY_SIZE(std_clk_io_parents),
819};
820
821static struct clk_std clk_usp2 = {
822 .enable_bit = 41,
823 .hw = {
824 .init = &clk_usp2_init,
825 },
826};
827
828static struct clk_init_data clk_vip_init = {
829 .name = "vip",
830 .ops = &ios_ops,
831 .parent_names = std_clk_io_parents,
832 .num_parents = ARRAY_SIZE(std_clk_io_parents),
833};
834
835static struct clk_std clk_vip = {
836 .enable_bit = 42,
837 .hw = {
838 .init = &clk_vip_init,
839 },
840};
841
842static struct clk_init_data clk_spi0_init = {
843 .name = "spi0",
844 .ops = &ios_ops,
845 .parent_names = std_clk_io_parents,
846 .num_parents = ARRAY_SIZE(std_clk_io_parents),
847};
848
849static struct clk_std clk_spi0 = {
850 .enable_bit = 43,
851 .hw = {
852 .init = &clk_spi0_init,
853 },
854};
855
856static struct clk_init_data clk_spi1_init = {
857 .name = "spi1",
858 .ops = &ios_ops,
859 .parent_names = std_clk_io_parents,
860 .num_parents = ARRAY_SIZE(std_clk_io_parents),
861};
862
863static struct clk_std clk_spi1 = {
864 .enable_bit = 44,
865 .hw = {
866 .init = &clk_spi1_init,
867 },
868};
869
870static struct clk_init_data clk_tsc_init = {
871 .name = "tsc",
872 .ops = &ios_ops,
873 .parent_names = std_clk_io_parents,
874 .num_parents = ARRAY_SIZE(std_clk_io_parents),
875};
876
877static struct clk_std clk_tsc = {
878 .enable_bit = 45,
879 .hw = {
880 .init = &clk_tsc_init,
881 },
882};
883
884static struct clk_init_data clk_i2c0_init = {
885 .name = "i2c0",
886 .ops = &ios_ops,
887 .parent_names = std_clk_io_parents,
888 .num_parents = ARRAY_SIZE(std_clk_io_parents),
889};
890
891static struct clk_std clk_i2c0 = {
892 .enable_bit = 46,
893 .hw = {
894 .init = &clk_i2c0_init,
895 },
896};
897
898static struct clk_init_data clk_i2c1_init = {
899 .name = "i2c1",
900 .ops = &ios_ops,
901 .parent_names = std_clk_io_parents,
902 .num_parents = ARRAY_SIZE(std_clk_io_parents),
903};
904
905static struct clk_std clk_i2c1 = {
906 .enable_bit = 47,
907 .hw = {
908 .init = &clk_i2c1_init,
909 },
910};
911
912static struct clk_init_data clk_pwmc_init = {
913 .name = "pwmc",
914 .ops = &ios_ops,
915 .parent_names = std_clk_io_parents,
916 .num_parents = ARRAY_SIZE(std_clk_io_parents),
917};
918
919static struct clk_std clk_pwmc = {
920 .enable_bit = 48,
921 .hw = {
922 .init = &clk_pwmc_init,
923 },
924};
925
926static struct clk_init_data clk_efuse_init = {
927 .name = "efuse",
928 .ops = &ios_ops,
929 .parent_names = std_clk_io_parents,
930 .num_parents = ARRAY_SIZE(std_clk_io_parents),
931};
932
933static struct clk_std clk_efuse = {
934 .enable_bit = 49,
935 .hw = {
936 .init = &clk_efuse_init,
937 },
938};
939
940static struct clk_init_data clk_pulse_init = {
941 .name = "pulse",
942 .ops = &ios_ops,
943 .parent_names = std_clk_io_parents,
944 .num_parents = ARRAY_SIZE(std_clk_io_parents),
945};
946
947static struct clk_std clk_pulse = {
948 .enable_bit = 50,
949 .hw = {
950 .init = &clk_pulse_init,
951 },
952};
953
Krzysztof Kozlowski45195b82015-04-28 13:46:21 +0900954static const char * const std_clk_dsp_parents[] = {
Binghua Duan198678b2012-08-20 06:42:36 +0000955 "dsp",
956};
957
958static struct clk_init_data clk_gps_init = {
959 .name = "gps",
960 .ops = &ios_ops,
961 .parent_names = std_clk_dsp_parents,
962 .num_parents = ARRAY_SIZE(std_clk_dsp_parents),
963};
964
965static struct clk_std clk_gps = {
966 .enable_bit = 1,
967 .hw = {
968 .init = &clk_gps_init,
969 },
970};
971
972static struct clk_init_data clk_mf_init = {
973 .name = "mf",
974 .ops = &ios_ops,
975 .parent_names = std_clk_io_parents,
976 .num_parents = ARRAY_SIZE(std_clk_io_parents),
977};
978
979static struct clk_std clk_mf = {
980 .enable_bit = 2,
981 .hw = {
982 .init = &clk_mf_init,
983 },
984};
985
Krzysztof Kozlowski45195b82015-04-28 13:46:21 +0900986static const char * const std_clk_sys_parents[] = {
Binghua Duan198678b2012-08-20 06:42:36 +0000987 "sys",
988};
989
990static struct clk_init_data clk_security_init = {
Barry Song7bf21bc2014-01-15 14:11:34 +0800991 .name = "security",
Binghua Duan198678b2012-08-20 06:42:36 +0000992 .ops = &ios_ops,
993 .parent_names = std_clk_sys_parents,
994 .num_parents = ARRAY_SIZE(std_clk_sys_parents),
995};
996
997static struct clk_std clk_security = {
998 .enable_bit = 19,
999 .hw = {
1000 .init = &clk_security_init,
1001 },
1002};
1003
Krzysztof Kozlowski45195b82015-04-28 13:46:21 +09001004static const char * const std_clk_usb_parents[] = {
Binghua Duan198678b2012-08-20 06:42:36 +00001005 "usb_pll",
1006};
1007
1008static struct clk_init_data clk_usb0_init = {
1009 .name = "usb0",
1010 .ops = &ios_ops,
1011 .parent_names = std_clk_usb_parents,
1012 .num_parents = ARRAY_SIZE(std_clk_usb_parents),
1013};
1014
1015static struct clk_std clk_usb0 = {
1016 .enable_bit = 16,
1017 .hw = {
1018 .init = &clk_usb0_init,
1019 },
1020};
1021
1022static struct clk_init_data clk_usb1_init = {
1023 .name = "usb1",
1024 .ops = &ios_ops,
1025 .parent_names = std_clk_usb_parents,
1026 .num_parents = ARRAY_SIZE(std_clk_usb_parents),
1027};
1028
1029static struct clk_std clk_usb1 = {
1030 .enable_bit = 17,
1031 .hw = {
1032 .init = &clk_usb1_init,
1033 },
1034};