blob: 0ff1e30bb59f87d4726dbc1a7283e219b89b44d0 [file] [log] [blame]
Kever Yang41793002017-02-23 15:37:52 +08001/*
2 * (C) Copyright 2017 Rockchip Electronics Co., Ltd
3 *
4 * SPDX-License-Identifier: GPL-2.0
5 */
6
7#include <common.h>
8#include <clk-uclass.h>
9#include <dm.h>
10#include <errno.h>
11#include <syscon.h>
12#include <asm/arch/clock.h>
13#include <asm/arch/cru_rk3328.h>
14#include <asm/arch/hardware.h>
15#include <asm/io.h>
16#include <dm/lists.h>
17#include <dt-bindings/clock/rk3328-cru.h>
18
19DECLARE_GLOBAL_DATA_PTR;
20
21struct pll_div {
22 u32 refdiv;
23 u32 fbdiv;
24 u32 postdiv1;
25 u32 postdiv2;
26 u32 frac;
27};
28
29#define RATE_TO_DIV(input_rate, output_rate) \
30 ((input_rate) / (output_rate) - 1);
31#define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1))
32
33#define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
34 .refdiv = _refdiv,\
35 .fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\
36 .postdiv1 = _postdiv1, .postdiv2 = _postdiv2};
37
38static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 1, 4, 1);
39static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 2, 2, 1);
40
41static const struct pll_div apll_816_cfg = PLL_DIVISORS(816 * MHz, 1, 2, 1);
42static const struct pll_div apll_600_cfg = PLL_DIVISORS(600 * MHz, 1, 3, 1);
43
44static const struct pll_div *apll_cfgs[] = {
45 [APLL_816_MHZ] = &apll_816_cfg,
46 [APLL_600_MHZ] = &apll_600_cfg,
47};
48
49enum {
50 /* PLL_CON0 */
51 PLL_POSTDIV1_SHIFT = 12,
52 PLL_POSTDIV1_MASK = 0x7 << PLL_POSTDIV1_SHIFT,
53 PLL_FBDIV_SHIFT = 0,
54 PLL_FBDIV_MASK = 0xfff,
55
56 /* PLL_CON1 */
57 PLL_DSMPD_SHIFT = 12,
58 PLL_DSMPD_MASK = 1 << PLL_DSMPD_SHIFT,
59 PLL_INTEGER_MODE = 1,
60 PLL_LOCK_STATUS_SHIFT = 10,
61 PLL_LOCK_STATUS_MASK = 1 << PLL_LOCK_STATUS_SHIFT,
62 PLL_POSTDIV2_SHIFT = 6,
63 PLL_POSTDIV2_MASK = 0x7 << PLL_POSTDIV2_SHIFT,
64 PLL_REFDIV_SHIFT = 0,
65 PLL_REFDIV_MASK = 0x3f,
66
67 /* PLL_CON2 */
68 PLL_FRACDIV_SHIFT = 0,
69 PLL_FRACDIV_MASK = 0xffffff,
70
71 /* MODE_CON */
72 APLL_MODE_SHIFT = 0,
73 NPLL_MODE_SHIFT = 1,
74 DPLL_MODE_SHIFT = 4,
75 CPLL_MODE_SHIFT = 8,
76 GPLL_MODE_SHIFT = 12,
77 PLL_MODE_SLOW = 0,
78 PLL_MODE_NORM,
79
80 /* CLKSEL_CON0 */
81 CLK_CORE_PLL_SEL_APLL = 0,
82 CLK_CORE_PLL_SEL_GPLL,
83 CLK_CORE_PLL_SEL_DPLL,
84 CLK_CORE_PLL_SEL_NPLL,
85 CLK_CORE_PLL_SEL_SHIFT = 6,
86 CLK_CORE_PLL_SEL_MASK = 3 << CLK_CORE_PLL_SEL_SHIFT,
87 CLK_CORE_DIV_SHIFT = 0,
88 CLK_CORE_DIV_MASK = 0x1f,
89
90 /* CLKSEL_CON1 */
91 ACLKM_CORE_DIV_SHIFT = 4,
92 ACLKM_CORE_DIV_MASK = 0x7 << ACLKM_CORE_DIV_SHIFT,
93 PCLK_DBG_DIV_SHIFT = 0,
94 PCLK_DBG_DIV_MASK = 0xF << PCLK_DBG_DIV_SHIFT,
95
96 /* CLKSEL_CON28 */
97 ACLK_PERIHP_PLL_SEL_CPLL = 0,
98 ACLK_PERIHP_PLL_SEL_GPLL,
99 ACLK_PERIHP_PLL_SEL_HDMIPHY,
100 ACLK_PERIHP_PLL_SEL_SHIFT = 6,
101 ACLK_PERIHP_PLL_SEL_MASK = 3 << ACLK_PERIHP_PLL_SEL_SHIFT,
102 ACLK_PERIHP_DIV_CON_SHIFT = 0,
103 ACLK_PERIHP_DIV_CON_MASK = 0x1f,
104
105 /* CLKSEL_CON29 */
106 PCLK_PERIHP_DIV_CON_SHIFT = 4,
107 PCLK_PERIHP_DIV_CON_MASK = 0x7 << PCLK_PERIHP_DIV_CON_SHIFT,
108 HCLK_PERIHP_DIV_CON_SHIFT = 0,
109 HCLK_PERIHP_DIV_CON_MASK = 3 << HCLK_PERIHP_DIV_CON_SHIFT,
110
111 /* CLKSEL_CON22 */
112 CLK_TSADC_DIV_CON_SHIFT = 0,
113 CLK_TSADC_DIV_CON_MASK = 0x3ff,
114
115 /* CLKSEL_CON23 */
116 CLK_SARADC_DIV_CON_SHIFT = 0,
117 CLK_SARADC_DIV_CON_MASK = 0x3ff << CLK_SARADC_DIV_CON_SHIFT,
118
119 /* CLKSEL_CON24 */
120 CLK_PWM_PLL_SEL_CPLL = 0,
121 CLK_PWM_PLL_SEL_GPLL,
122 CLK_PWM_PLL_SEL_SHIFT = 15,
123 CLK_PWM_PLL_SEL_MASK = 1 << CLK_PWM_PLL_SEL_SHIFT,
124 CLK_PWM_DIV_CON_SHIFT = 8,
125 CLK_PWM_DIV_CON_MASK = 0x7f << CLK_PWM_DIV_CON_SHIFT,
126
127 CLK_SPI_PLL_SEL_CPLL = 0,
128 CLK_SPI_PLL_SEL_GPLL,
129 CLK_SPI_PLL_SEL_SHIFT = 7,
130 CLK_SPI_PLL_SEL_MASK = 1 << CLK_SPI_PLL_SEL_SHIFT,
131 CLK_SPI_DIV_CON_SHIFT = 0,
132 CLK_SPI_DIV_CON_MASK = 0x7f << CLK_SPI_DIV_CON_SHIFT,
133
134 /* CLKSEL_CON30 */
135 CLK_SDMMC_PLL_SEL_CPLL = 0,
136 CLK_SDMMC_PLL_SEL_GPLL,
137 CLK_SDMMC_PLL_SEL_24M,
138 CLK_SDMMC_PLL_SEL_USBPHY,
139 CLK_SDMMC_PLL_SHIFT = 8,
140 CLK_SDMMC_PLL_MASK = 0x3 << CLK_SDMMC_PLL_SHIFT,
141 CLK_SDMMC_DIV_CON_SHIFT = 0,
142 CLK_SDMMC_DIV_CON_MASK = 0xff << CLK_SDMMC_DIV_CON_SHIFT,
143
144 /* CLKSEL_CON32 */
145 CLK_EMMC_PLL_SEL_CPLL = 0,
146 CLK_EMMC_PLL_SEL_GPLL,
147 CLK_EMMC_PLL_SEL_24M,
148 CLK_EMMC_PLL_SEL_USBPHY,
149 CLK_EMMC_PLL_SHIFT = 8,
150 CLK_EMMC_PLL_MASK = 0x3 << CLK_EMMC_PLL_SHIFT,
151 CLK_EMMC_DIV_CON_SHIFT = 0,
152 CLK_EMMC_DIV_CON_MASK = 0xff << CLK_EMMC_DIV_CON_SHIFT,
153
154 /* CLKSEL_CON34 */
155 CLK_I2C_PLL_SEL_CPLL = 0,
156 CLK_I2C_PLL_SEL_GPLL,
157 CLK_I2C_DIV_CON_MASK = 0x7f,
158 CLK_I2C_PLL_SEL_MASK = 1,
159 CLK_I2C1_PLL_SEL_SHIFT = 15,
160 CLK_I2C1_DIV_CON_SHIFT = 8,
161 CLK_I2C0_PLL_SEL_SHIFT = 7,
162 CLK_I2C0_DIV_CON_SHIFT = 0,
163
164 /* CLKSEL_CON35 */
165 CLK_I2C3_PLL_SEL_SHIFT = 15,
166 CLK_I2C3_DIV_CON_SHIFT = 8,
167 CLK_I2C2_PLL_SEL_SHIFT = 7,
168 CLK_I2C2_DIV_CON_SHIFT = 0,
169};
170
171#define VCO_MAX_KHZ (3200 * (MHz / KHz))
172#define VCO_MIN_KHZ (800 * (MHz / KHz))
173#define OUTPUT_MAX_KHZ (3200 * (MHz / KHz))
174#define OUTPUT_MIN_KHZ (16 * (MHz / KHz))
175
176/*
177 * the div restructions of pll in integer mode, these are defined in
178 * * CRU_*PLL_CON0 or PMUCRU_*PLL_CON0
179 */
180#define PLL_DIV_MIN 16
181#define PLL_DIV_MAX 3200
182
183/*
184 * How to calculate the PLL(from TRM V0.3 Part 1 Page 63):
185 * Formulas also embedded within the Fractional PLL Verilog model:
186 * If DSMPD = 1 (DSM is disabled, "integer mode")
187 * FOUTVCO = FREF / REFDIV * FBDIV
188 * FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2
189 * Where:
190 * FOUTVCO = Fractional PLL non-divided output frequency
191 * FOUTPOSTDIV = Fractional PLL divided output frequency
192 * (output of second post divider)
193 * FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input)
194 * REFDIV = Fractional PLL input reference clock divider
195 * FBDIV = Integer value programmed into feedback divide
196 *
197 */
198static void rkclk_set_pll(struct rk3328_cru *cru, enum rk_clk_id clk_id,
199 const struct pll_div *div)
200{
201 u32 *pll_con;
202 u32 mode_shift, mode_mask;
203
204 pll_con = NULL;
205 mode_shift = 0;
206 switch (clk_id) {
207 case CLK_ARM:
208 pll_con = cru->apll_con;
209 mode_shift = APLL_MODE_SHIFT;
210 break;
211 case CLK_DDR:
212 pll_con = cru->dpll_con;
213 mode_shift = DPLL_MODE_SHIFT;
214 break;
215 case CLK_CODEC:
216 pll_con = cru->cpll_con;
217 mode_shift = CPLL_MODE_SHIFT;
218 break;
219 case CLK_GENERAL:
220 pll_con = cru->gpll_con;
221 mode_shift = GPLL_MODE_SHIFT;
222 break;
223 case CLK_NEW:
224 pll_con = cru->npll_con;
225 mode_shift = NPLL_MODE_SHIFT;
226 break;
227 default:
228 break;
229 }
230 mode_mask = 1 << mode_shift;
231
232 /* All 8 PLLs have same VCO and output frequency range restrictions. */
233 u32 vco_khz = OSC_HZ / 1000 * div->fbdiv / div->refdiv;
234 u32 output_khz = vco_khz / div->postdiv1 / div->postdiv2;
235
236 debug("PLL at %p: fbdiv=%d, refdiv=%d, postdiv1=%d, \
237 postdiv2=%d, vco=%u khz, output=%u khz\n",
238 pll_con, div->fbdiv, div->refdiv, div->postdiv1,
239 div->postdiv2, vco_khz, output_khz);
240 assert(vco_khz >= VCO_MIN_KHZ && vco_khz <= VCO_MAX_KHZ &&
241 output_khz >= OUTPUT_MIN_KHZ && output_khz <= OUTPUT_MAX_KHZ &&
242 div->fbdiv >= PLL_DIV_MIN && div->fbdiv <= PLL_DIV_MAX);
243
244 /*
245 * When power on or changing PLL setting,
246 * we must force PLL into slow mode to ensure output stable clock.
247 */
248 rk_clrsetreg(&cru->mode_con, mode_mask, PLL_MODE_SLOW << mode_shift);
249
250 /* use integer mode */
251 rk_clrsetreg(&pll_con[1], PLL_DSMPD_MASK,
252 PLL_INTEGER_MODE << PLL_DSMPD_SHIFT);
253
254 rk_clrsetreg(&pll_con[0],
255 PLL_FBDIV_MASK | PLL_POSTDIV1_MASK,
256 (div->fbdiv << PLL_FBDIV_SHIFT) |
257 (div->postdiv1 << PLL_POSTDIV1_SHIFT));
258 rk_clrsetreg(&pll_con[1],
259 PLL_POSTDIV2_MASK | PLL_REFDIV_MASK,
260 (div->postdiv2 << PLL_POSTDIV2_SHIFT) |
261 (div->refdiv << PLL_REFDIV_SHIFT));
262
263 /* waiting for pll lock */
264 while (!(readl(&pll_con[1]) & (1 << PLL_LOCK_STATUS_SHIFT)))
265 udelay(1);
266
267 /* pll enter normal mode */
268 rk_clrsetreg(&cru->mode_con, mode_mask, PLL_MODE_NORM << mode_shift);
269}
270
271static void rkclk_init(struct rk3328_cru *cru)
272{
273 u32 aclk_div;
274 u32 hclk_div;
275 u32 pclk_div;
276
277 /* configure gpll cpll */
278 rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg);
279 rkclk_set_pll(cru, CLK_CODEC, &cpll_init_cfg);
280
281 /* configure perihp aclk, hclk, pclk */
282 aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1;
283 hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1;
284 pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1;
285
286 rk_clrsetreg(&cru->clksel_con[28],
287 ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK,
288 ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT |
289 aclk_div << ACLK_PERIHP_DIV_CON_SHIFT);
290 rk_clrsetreg(&cru->clksel_con[29],
291 PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK,
292 pclk_div << PCLK_PERIHP_DIV_CON_SHIFT |
293 hclk_div << HCLK_PERIHP_DIV_CON_SHIFT);
294}
295
296void rk3328_configure_cpu(struct rk3328_cru *cru,
297 enum apll_frequencies apll_freq)
298{
299 u32 clk_core_div;
300 u32 aclkm_div;
301 u32 pclk_dbg_div;
302
303 rkclk_set_pll(cru, CLK_ARM, apll_cfgs[apll_freq]);
304
305 clk_core_div = APLL_HZ / CLK_CORE_HZ - 1;
306 aclkm_div = APLL_HZ / ACLKM_CORE_HZ / (clk_core_div + 1) - 1;
307 pclk_dbg_div = APLL_HZ / PCLK_DBG_HZ / (clk_core_div + 1) - 1;
308
309 rk_clrsetreg(&cru->clksel_con[0],
310 CLK_CORE_PLL_SEL_MASK | CLK_CORE_DIV_MASK,
311 CLK_CORE_PLL_SEL_APLL << CLK_CORE_PLL_SEL_SHIFT |
312 clk_core_div << CLK_CORE_DIV_SHIFT);
313
314 rk_clrsetreg(&cru->clksel_con[1],
315 PCLK_DBG_DIV_MASK | ACLKM_CORE_DIV_MASK,
316 pclk_dbg_div << PCLK_DBG_DIV_SHIFT |
317 aclkm_div << ACLKM_CORE_DIV_SHIFT);
318}
319
320
321static ulong rk3328_i2c_get_clk(struct rk3328_cru *cru, ulong clk_id)
322{
323 u32 div, con;
324
325 switch (clk_id) {
326 case SCLK_I2C0:
327 con = readl(&cru->clksel_con[34]);
328 div = con >> CLK_I2C0_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
329 break;
330 case SCLK_I2C1:
331 con = readl(&cru->clksel_con[34]);
332 div = con >> CLK_I2C1_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
333 break;
334 case SCLK_I2C2:
335 con = readl(&cru->clksel_con[35]);
336 div = con >> CLK_I2C2_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
337 break;
338 case SCLK_I2C3:
339 con = readl(&cru->clksel_con[35]);
340 div = con >> CLK_I2C3_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
341 break;
342 default:
343 printf("do not support this i2c bus\n");
344 return -EINVAL;
345 }
346
347 return DIV_TO_RATE(GPLL_HZ, div);
348}
349
350static ulong rk3328_i2c_set_clk(struct rk3328_cru *cru, ulong clk_id, uint hz)
351{
352 int src_clk_div;
353
354 src_clk_div = GPLL_HZ / hz;
355 assert(src_clk_div - 1 < 127);
356
357 switch (clk_id) {
358 case SCLK_I2C0:
359 rk_clrsetreg(&cru->clksel_con[34],
360 CLK_I2C_DIV_CON_MASK << CLK_I2C0_DIV_CON_SHIFT |
361 CLK_I2C_PLL_SEL_MASK << CLK_I2C0_PLL_SEL_SHIFT,
362 (src_clk_div - 1) << CLK_I2C0_DIV_CON_SHIFT |
363 CLK_I2C_PLL_SEL_GPLL << CLK_I2C0_PLL_SEL_SHIFT);
364 break;
365 case SCLK_I2C1:
366 rk_clrsetreg(&cru->clksel_con[34],
367 CLK_I2C_DIV_CON_MASK << CLK_I2C1_DIV_CON_SHIFT |
368 CLK_I2C_PLL_SEL_MASK << CLK_I2C1_PLL_SEL_SHIFT,
369 (src_clk_div - 1) << CLK_I2C1_DIV_CON_SHIFT |
370 CLK_I2C_PLL_SEL_GPLL << CLK_I2C1_PLL_SEL_SHIFT);
371 break;
372 case SCLK_I2C2:
373 rk_clrsetreg(&cru->clksel_con[35],
374 CLK_I2C_DIV_CON_MASK << CLK_I2C2_DIV_CON_SHIFT |
375 CLK_I2C_PLL_SEL_MASK << CLK_I2C2_PLL_SEL_SHIFT,
376 (src_clk_div - 1) << CLK_I2C2_DIV_CON_SHIFT |
377 CLK_I2C_PLL_SEL_GPLL << CLK_I2C2_PLL_SEL_SHIFT);
378 break;
379 case SCLK_I2C3:
380 rk_clrsetreg(&cru->clksel_con[35],
381 CLK_I2C_DIV_CON_MASK << CLK_I2C3_DIV_CON_SHIFT |
382 CLK_I2C_PLL_SEL_MASK << CLK_I2C3_PLL_SEL_SHIFT,
383 (src_clk_div - 1) << CLK_I2C3_DIV_CON_SHIFT |
384 CLK_I2C_PLL_SEL_GPLL << CLK_I2C3_PLL_SEL_SHIFT);
385 break;
386 default:
387 printf("do not support this i2c bus\n");
388 return -EINVAL;
389 }
390
391 return DIV_TO_RATE(GPLL_HZ, src_clk_div);
392}
393
394static ulong rk3328_mmc_get_clk(struct rk3328_cru *cru, uint clk_id)
395{
396 u32 div, con, con_id;
397
398 switch (clk_id) {
399 case HCLK_SDMMC:
400 con_id = 30;
401 break;
402 case HCLK_EMMC:
403 con_id = 32;
404 break;
405 default:
406 return -EINVAL;
407 }
408 con = readl(&cru->clksel_con[con_id]);
409 div = (con & CLK_EMMC_DIV_CON_MASK) >> CLK_EMMC_DIV_CON_SHIFT;
410
411 if ((con & CLK_EMMC_PLL_MASK) >> CLK_EMMC_PLL_SHIFT
412 == CLK_EMMC_PLL_SEL_24M)
413 return DIV_TO_RATE(OSC_HZ, div);
414 else
415 return DIV_TO_RATE(GPLL_HZ, div);
416}
417
418static ulong rk3328_mmc_set_clk(struct rk3328_cru *cru,
419 ulong clk_id, ulong set_rate)
420{
421 int src_clk_div;
422 u32 con_id;
423
424 switch (clk_id) {
425 case HCLK_SDMMC:
426 con_id = 30;
427 break;
428 case HCLK_EMMC:
429 con_id = 32;
430 break;
431 default:
432 return -EINVAL;
433 }
434 /* Select clk_sdmmc/emmc source from GPLL by default */
435 src_clk_div = GPLL_HZ / set_rate;
436
437 if (src_clk_div > 127) {
438 /* use 24MHz source for 400KHz clock */
439 src_clk_div = OSC_HZ / set_rate;
440 rk_clrsetreg(&cru->clksel_con[con_id],
441 CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
442 CLK_EMMC_PLL_SEL_24M << CLK_EMMC_PLL_SHIFT |
443 (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
444 } else {
445 rk_clrsetreg(&cru->clksel_con[con_id],
446 CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
447 CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
448 (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
449 }
450
451 return rk3328_mmc_get_clk(cru, clk_id);
452}
453
454static ulong rk3328_pwm_get_clk(struct rk3328_cru *cru)
455{
456 u32 div, con;
457
458 con = readl(&cru->clksel_con[24]);
459 div = (con & CLK_PWM_DIV_CON_MASK) >> CLK_PWM_DIV_CON_SHIFT;
460
461 return DIV_TO_RATE(GPLL_HZ, div);
462}
463
464static ulong rk3328_pwm_set_clk(struct rk3328_cru *cru, uint hz)
465{
466 u32 div = GPLL_HZ / hz;
467
468 rk_clrsetreg(&cru->clksel_con[24],
469 CLK_PWM_PLL_SEL_MASK | CLK_PWM_DIV_CON_MASK,
470 CLK_PWM_PLL_SEL_GPLL << CLK_PWM_PLL_SEL_SHIFT |
471 (div - 1) << CLK_PWM_DIV_CON_SHIFT);
472
473 return DIV_TO_RATE(GPLL_HZ, div);
474}
475
476static ulong rk3328_clk_get_rate(struct clk *clk)
477{
478 struct rk3328_clk_priv *priv = dev_get_priv(clk->dev);
479 ulong rate = 0;
480
481 switch (clk->id) {
482 case 0 ... 29:
483 return 0;
484 case HCLK_SDMMC:
485 case HCLK_EMMC:
486 rate = rk3328_mmc_get_clk(priv->cru, clk->id);
487 break;
488 case SCLK_I2C0:
489 case SCLK_I2C1:
490 case SCLK_I2C2:
491 case SCLK_I2C3:
492 rate = rk3328_i2c_get_clk(priv->cru, clk->id);
493 break;
494 case SCLK_PWM:
495 rate = rk3328_pwm_get_clk(priv->cru);
496 break;
497 default:
498 return -ENOENT;
499 }
500
501 return rate;
502}
503
504static ulong rk3328_clk_set_rate(struct clk *clk, ulong rate)
505{
506 struct rk3328_clk_priv *priv = dev_get_priv(clk->dev);
507 ulong ret = 0;
508
509 switch (clk->id) {
510 case 0 ... 29:
511 return 0;
512 case HCLK_SDMMC:
513 case HCLK_EMMC:
514 ret = rk3328_mmc_set_clk(priv->cru, clk->id, rate);
515 break;
516 case SCLK_I2C0:
517 case SCLK_I2C1:
518 case SCLK_I2C2:
519 case SCLK_I2C3:
520 ret = rk3328_i2c_set_clk(priv->cru, clk->id, rate);
521 break;
522 case SCLK_PWM:
523 ret = rk3328_pwm_set_clk(priv->cru, rate);
524 break;
525 default:
526 return -ENOENT;
527 }
528
529 return ret;
530}
531
532static struct clk_ops rk3328_clk_ops = {
533 .get_rate = rk3328_clk_get_rate,
534 .set_rate = rk3328_clk_set_rate,
535};
536
537static int rk3328_clk_probe(struct udevice *dev)
538{
539 struct rk3328_clk_priv *priv = dev_get_priv(dev);
540
541 rkclk_init(priv->cru);
542
543 return 0;
544}
545
546static int rk3328_clk_ofdata_to_platdata(struct udevice *dev)
547{
548 struct rk3328_clk_priv *priv = dev_get_priv(dev);
549
550 priv->cru = (struct rk3328_cru *)dev_get_addr(dev);
551
552 return 0;
553}
554
555static int rk3328_clk_bind(struct udevice *dev)
556{
557 int ret;
558
559 /* The reset driver does not have a device node, so bind it here */
560 ret = device_bind_driver(gd->dm_root, "rk3328_sysreset", "reset", &dev);
561 if (ret)
562 printf("Warning: No RK3328 reset driver: ret=%d\n", ret);
563
564 return ret;
565}
566
567static const struct udevice_id rk3328_clk_ids[] = {
568 { .compatible = "rockchip,rk3328-cru" },
569 { }
570};
571
572U_BOOT_DRIVER(rockchip_rk3328_cru) = {
573 .name = "rockchip_rk3328_cru",
574 .id = UCLASS_CLK,
575 .of_match = rk3328_clk_ids,
576 .priv_auto_alloc_size = sizeof(struct rk3328_clk_priv),
577 .ofdata_to_platdata = rk3328_clk_ofdata_to_platdata,
578 .ops = &rk3328_clk_ops,
579 .bind = rk3328_clk_bind,
580 .probe = rk3328_clk_probe,
581};