]> git.ipfire.org Git - people/ms/u-boot.git/blob - drivers/clk/rockchip/clk_rk3399.c
projects / people / ms / u-boot.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
rockchip: clk: rk3399: fix off-by one during rate calculation in i2c/spi_set_rate
[people/ms/u-boot.git] / drivers / clk / rockchip / clk_rk3399.c
1 /*
2 * (C) Copyright 2015 Google, Inc
3 * (C) 2017 Theobroma Systems Design und Consulting GmbH
4 *
5 * SPDX-License-Identifier: GPL-2.0
6 */
7
8 #include <common.h>
9 #include <clk-uclass.h>
10 #include <dm.h>
11 #include <dt-structs.h>
12 #include <errno.h>
13 #include <mapmem.h>
14 #include <syscon.h>
15 #include <asm/io.h>
16 #include <asm/arch/clock.h>
17 #include <asm/arch/cru_rk3399.h>
18 #include <asm/arch/hardware.h>
19 #include <dm/lists.h>
20 #include <dt-bindings/clock/rk3399-cru.h>
21
22 DECLARE_GLOBAL_DATA_PTR;
23
24 #if CONFIG_IS_ENABLED(OF_PLATDATA)
25 struct rk3399_clk_plat {
26 struct dtd_rockchip_rk3399_cru dtd;
27 };
28
29 struct rk3399_pmuclk_plat {
30 struct dtd_rockchip_rk3399_pmucru dtd;
31 };
32 #endif
33
34 struct pll_div {
35 u32 refdiv;
36 u32 fbdiv;
37 u32 postdiv1;
38 u32 postdiv2;
39 u32 frac;
40 };
41
42 #define RATE_TO_DIV(input_rate, output_rate) \
43 ((input_rate) / (output_rate) - 1);
44 #define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1))
45
46 #define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
47 .refdiv = _refdiv,\
48 .fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\
49 .postdiv1 = _postdiv1, .postdiv2 = _postdiv2};
50
51 #if defined(CONFIG_SPL_BUILD)
52 static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
53 static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2, 2);
54 #else
55 static const struct pll_div ppll_init_cfg = PLL_DIVISORS(PPLL_HZ, 2, 2, 1);
56 #endif
57
58 static const struct pll_div apll_l_1600_cfg = PLL_DIVISORS(1600*MHz, 3, 1, 1);
59 static const struct pll_div apll_l_600_cfg = PLL_DIVISORS(600*MHz, 1, 2, 1);
60
61 static const struct pll_div *apll_l_cfgs[] = {
62 [APLL_L_1600_MHZ] = &apll_l_1600_cfg,
63 [APLL_L_600_MHZ] = &apll_l_600_cfg,
64 };
65
66 enum {
67 /* PLL_CON0 */
68 PLL_FBDIV_MASK = 0xfff,
69 PLL_FBDIV_SHIFT = 0,
70
71 /* PLL_CON1 */
72 PLL_POSTDIV2_SHIFT = 12,
73 PLL_POSTDIV2_MASK = 0x7 << PLL_POSTDIV2_SHIFT,
74 PLL_POSTDIV1_SHIFT = 8,
75 PLL_POSTDIV1_MASK = 0x7 << PLL_POSTDIV1_SHIFT,
76 PLL_REFDIV_MASK = 0x3f,
77 PLL_REFDIV_SHIFT = 0,
78
79 /* PLL_CON2 */
80 PLL_LOCK_STATUS_SHIFT = 31,
81 PLL_LOCK_STATUS_MASK = 1 << PLL_LOCK_STATUS_SHIFT,
82 PLL_FRACDIV_MASK = 0xffffff,
83 PLL_FRACDIV_SHIFT = 0,
84
85 /* PLL_CON3 */
86 PLL_MODE_SHIFT = 8,
87 PLL_MODE_MASK = 3 << PLL_MODE_SHIFT,
88 PLL_MODE_SLOW = 0,
89 PLL_MODE_NORM,
90 PLL_MODE_DEEP,
91 PLL_DSMPD_SHIFT = 3,
92 PLL_DSMPD_MASK = 1 << PLL_DSMPD_SHIFT,
93 PLL_INTEGER_MODE = 1,
94
95 /* PMUCRU_CLKSEL_CON0 */
96 PMU_PCLK_DIV_CON_MASK = 0x1f,
97 PMU_PCLK_DIV_CON_SHIFT = 0,
98
99 /* PMUCRU_CLKSEL_CON1 */
100 SPI3_PLL_SEL_SHIFT = 7,
101 SPI3_PLL_SEL_MASK = 1 << SPI3_PLL_SEL_SHIFT,
102 SPI3_PLL_SEL_24M = 0,
103 SPI3_PLL_SEL_PPLL = 1,
104 SPI3_DIV_CON_SHIFT = 0x0,
105 SPI3_DIV_CON_MASK = 0x7f,
106
107 /* PMUCRU_CLKSEL_CON2 */
108 I2C_DIV_CON_MASK = 0x7f,
109 CLK_I2C8_DIV_CON_SHIFT = 8,
110 CLK_I2C0_DIV_CON_SHIFT = 0,
111
112 /* PMUCRU_CLKSEL_CON3 */
113 CLK_I2C4_DIV_CON_SHIFT = 0,
114
115 /* CLKSEL_CON0 */
116 ACLKM_CORE_L_DIV_CON_SHIFT = 8,
117 ACLKM_CORE_L_DIV_CON_MASK = 0x1f << ACLKM_CORE_L_DIV_CON_SHIFT,
118 CLK_CORE_L_PLL_SEL_SHIFT = 6,
119 CLK_CORE_L_PLL_SEL_MASK = 3 << CLK_CORE_L_PLL_SEL_SHIFT,
120 CLK_CORE_L_PLL_SEL_ALPLL = 0x0,
121 CLK_CORE_L_PLL_SEL_ABPLL = 0x1,
122 CLK_CORE_L_PLL_SEL_DPLL = 0x10,
123 CLK_CORE_L_PLL_SEL_GPLL = 0x11,
124 CLK_CORE_L_DIV_MASK = 0x1f,
125 CLK_CORE_L_DIV_SHIFT = 0,
126
127 /* CLKSEL_CON1 */
128 PCLK_DBG_L_DIV_SHIFT = 0x8,
129 PCLK_DBG_L_DIV_MASK = 0x1f << PCLK_DBG_L_DIV_SHIFT,
130 ATCLK_CORE_L_DIV_SHIFT = 0,
131 ATCLK_CORE_L_DIV_MASK = 0x1f << ATCLK_CORE_L_DIV_SHIFT,
132
133 /* CLKSEL_CON14 */
134 PCLK_PERIHP_DIV_CON_SHIFT = 12,
135 PCLK_PERIHP_DIV_CON_MASK = 0x7 << PCLK_PERIHP_DIV_CON_SHIFT,
136 HCLK_PERIHP_DIV_CON_SHIFT = 8,
137 HCLK_PERIHP_DIV_CON_MASK = 3 << HCLK_PERIHP_DIV_CON_SHIFT,
138 ACLK_PERIHP_PLL_SEL_SHIFT = 7,
139 ACLK_PERIHP_PLL_SEL_MASK = 1 << ACLK_PERIHP_PLL_SEL_SHIFT,
140 ACLK_PERIHP_PLL_SEL_CPLL = 0,
141 ACLK_PERIHP_PLL_SEL_GPLL = 1,
142 ACLK_PERIHP_DIV_CON_SHIFT = 0,
143 ACLK_PERIHP_DIV_CON_MASK = 0x1f,
144
145 /* CLKSEL_CON21 */
146 ACLK_EMMC_PLL_SEL_SHIFT = 7,
147 ACLK_EMMC_PLL_SEL_MASK = 0x1 << ACLK_EMMC_PLL_SEL_SHIFT,
148 ACLK_EMMC_PLL_SEL_GPLL = 0x1,
149 ACLK_EMMC_DIV_CON_SHIFT = 0,
150 ACLK_EMMC_DIV_CON_MASK = 0x1f,
151
152 /* CLKSEL_CON22 */
153 CLK_EMMC_PLL_SHIFT = 8,
154 CLK_EMMC_PLL_MASK = 0x7 << CLK_EMMC_PLL_SHIFT,
155 CLK_EMMC_PLL_SEL_GPLL = 0x1,
156 CLK_EMMC_PLL_SEL_24M = 0x5,
157 CLK_EMMC_DIV_CON_SHIFT = 0,
158 CLK_EMMC_DIV_CON_MASK = 0x7f << CLK_EMMC_DIV_CON_SHIFT,
159
160 /* CLKSEL_CON23 */
161 PCLK_PERILP0_DIV_CON_SHIFT = 12,
162 PCLK_PERILP0_DIV_CON_MASK = 0x7 << PCLK_PERILP0_DIV_CON_SHIFT,
163 HCLK_PERILP0_DIV_CON_SHIFT = 8,
164 HCLK_PERILP0_DIV_CON_MASK = 3 << HCLK_PERILP0_DIV_CON_SHIFT,
165 ACLK_PERILP0_PLL_SEL_SHIFT = 7,
166 ACLK_PERILP0_PLL_SEL_MASK = 1 << ACLK_PERILP0_PLL_SEL_SHIFT,
167 ACLK_PERILP0_PLL_SEL_CPLL = 0,
168 ACLK_PERILP0_PLL_SEL_GPLL = 1,
169 ACLK_PERILP0_DIV_CON_SHIFT = 0,
170 ACLK_PERILP0_DIV_CON_MASK = 0x1f,
171
172 /* CLKSEL_CON25 */
173 PCLK_PERILP1_DIV_CON_SHIFT = 8,
174 PCLK_PERILP1_DIV_CON_MASK = 0x7 << PCLK_PERILP1_DIV_CON_SHIFT,
175 HCLK_PERILP1_PLL_SEL_SHIFT = 7,
176 HCLK_PERILP1_PLL_SEL_MASK = 1 << HCLK_PERILP1_PLL_SEL_SHIFT,
177 HCLK_PERILP1_PLL_SEL_CPLL = 0,
178 HCLK_PERILP1_PLL_SEL_GPLL = 1,
179 HCLK_PERILP1_DIV_CON_SHIFT = 0,
180 HCLK_PERILP1_DIV_CON_MASK = 0x1f,
181
182 /* CLKSEL_CON26 */
183 CLK_SARADC_DIV_CON_SHIFT = 8,
184 CLK_SARADC_DIV_CON_MASK = 0xff << CLK_SARADC_DIV_CON_SHIFT,
185
186 /* CLKSEL_CON27 */
187 CLK_TSADC_SEL_X24M = 0x0,
188 CLK_TSADC_SEL_SHIFT = 15,
189 CLK_TSADC_SEL_MASK = 1 << CLK_TSADC_SEL_SHIFT,
190 CLK_TSADC_DIV_CON_SHIFT = 0,
191 CLK_TSADC_DIV_CON_MASK = 0x3ff,
192
193 /* CLKSEL_CON47 & CLKSEL_CON48 */
194 ACLK_VOP_PLL_SEL_SHIFT = 6,
195 ACLK_VOP_PLL_SEL_MASK = 0x3 << ACLK_VOP_PLL_SEL_SHIFT,
196 ACLK_VOP_PLL_SEL_CPLL = 0x1,
197 ACLK_VOP_DIV_CON_SHIFT = 0,
198 ACLK_VOP_DIV_CON_MASK = 0x1f << ACLK_VOP_DIV_CON_SHIFT,
199
200 /* CLKSEL_CON49 & CLKSEL_CON50 */
201 DCLK_VOP_DCLK_SEL_SHIFT = 11,
202 DCLK_VOP_DCLK_SEL_MASK = 1 << DCLK_VOP_DCLK_SEL_SHIFT,
203 DCLK_VOP_DCLK_SEL_DIVOUT = 0,
204 DCLK_VOP_PLL_SEL_SHIFT = 8,
205 DCLK_VOP_PLL_SEL_MASK = 3 << DCLK_VOP_PLL_SEL_SHIFT,
206 DCLK_VOP_PLL_SEL_VPLL = 0,
207 DCLK_VOP_DIV_CON_MASK = 0xff,
208 DCLK_VOP_DIV_CON_SHIFT = 0,
209
210 /* CLKSEL_CON58 */
211 CLK_SPI_PLL_SEL_WIDTH = 1,
212 CLK_SPI_PLL_SEL_MASK = ((1 < CLK_SPI_PLL_SEL_WIDTH) - 1),
213 CLK_SPI_PLL_SEL_CPLL = 0,
214 CLK_SPI_PLL_SEL_GPLL = 1,
215 CLK_SPI_PLL_DIV_CON_WIDTH = 7,
216 CLK_SPI_PLL_DIV_CON_MASK = ((1 << CLK_SPI_PLL_DIV_CON_WIDTH) - 1),
217
218 CLK_SPI5_PLL_DIV_CON_SHIFT = 8,
219 CLK_SPI5_PLL_SEL_SHIFT = 15,
220
221 /* CLKSEL_CON59 */
222 CLK_SPI1_PLL_SEL_SHIFT = 15,
223 CLK_SPI1_PLL_DIV_CON_SHIFT = 8,
224 CLK_SPI0_PLL_SEL_SHIFT = 7,
225 CLK_SPI0_PLL_DIV_CON_SHIFT = 0,
226
227 /* CLKSEL_CON60 */
228 CLK_SPI4_PLL_SEL_SHIFT = 15,
229 CLK_SPI4_PLL_DIV_CON_SHIFT = 8,
230 CLK_SPI2_PLL_SEL_SHIFT = 7,
231 CLK_SPI2_PLL_DIV_CON_SHIFT = 0,
232
233 /* CLKSEL_CON61 */
234 CLK_I2C_PLL_SEL_MASK = 1,
235 CLK_I2C_PLL_SEL_CPLL = 0,
236 CLK_I2C_PLL_SEL_GPLL = 1,
237 CLK_I2C5_PLL_SEL_SHIFT = 15,
238 CLK_I2C5_DIV_CON_SHIFT = 8,
239 CLK_I2C1_PLL_SEL_SHIFT = 7,
240 CLK_I2C1_DIV_CON_SHIFT = 0,
241
242 /* CLKSEL_CON62 */
243 CLK_I2C6_PLL_SEL_SHIFT = 15,
244 CLK_I2C6_DIV_CON_SHIFT = 8,
245 CLK_I2C2_PLL_SEL_SHIFT = 7,
246 CLK_I2C2_DIV_CON_SHIFT = 0,
247
248 /* CLKSEL_CON63 */
249 CLK_I2C7_PLL_SEL_SHIFT = 15,
250 CLK_I2C7_DIV_CON_SHIFT = 8,
251 CLK_I2C3_PLL_SEL_SHIFT = 7,
252 CLK_I2C3_DIV_CON_SHIFT = 0,
253
254 /* CRU_SOFTRST_CON4 */
255 RESETN_DDR0_REQ_SHIFT = 8,
256 RESETN_DDR0_REQ_MASK = 1 << RESETN_DDR0_REQ_SHIFT,
257 RESETN_DDRPHY0_REQ_SHIFT = 9,
258 RESETN_DDRPHY0_REQ_MASK = 1 << RESETN_DDRPHY0_REQ_SHIFT,
259 RESETN_DDR1_REQ_SHIFT = 12,
260 RESETN_DDR1_REQ_MASK = 1 << RESETN_DDR1_REQ_SHIFT,
261 RESETN_DDRPHY1_REQ_SHIFT = 13,
262 RESETN_DDRPHY1_REQ_MASK = 1 << RESETN_DDRPHY1_REQ_SHIFT,
263 };
264
265 #define VCO_MAX_KHZ (3200 * (MHz / KHz))
266 #define VCO_MIN_KHZ (800 * (MHz / KHz))
267 #define OUTPUT_MAX_KHZ (3200 * (MHz / KHz))
268 #define OUTPUT_MIN_KHZ (16 * (MHz / KHz))
269
270 /*
271 * the div restructions of pll in integer mode, these are defined in
272 * * CRU_*PLL_CON0 or PMUCRU_*PLL_CON0
273 */
274 #define PLL_DIV_MIN 16
275 #define PLL_DIV_MAX 3200
276
277 /*
278 * How to calculate the PLL(from TRM V0.3 Part 1 Page 63):
279 * Formulas also embedded within the Fractional PLL Verilog model:
280 * If DSMPD = 1 (DSM is disabled, "integer mode")
281 * FOUTVCO = FREF / REFDIV * FBDIV
282 * FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2
283 * Where:
284 * FOUTVCO = Fractional PLL non-divided output frequency
285 * FOUTPOSTDIV = Fractional PLL divided output frequency
286 * (output of second post divider)
287 * FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input)
288 * REFDIV = Fractional PLL input reference clock divider
289 * FBDIV = Integer value programmed into feedback divide
290 *
291 */
292 static void rkclk_set_pll(u32 *pll_con, const struct pll_div *div)
293 {
294 /* All 8 PLLs have same VCO and output frequency range restrictions. */
295 u32 vco_khz = OSC_HZ / 1000 * div->fbdiv / div->refdiv;
296 u32 output_khz = vco_khz / div->postdiv1 / div->postdiv2;
297
298 debug("PLL at %p: fbdiv=%d, refdiv=%d, postdiv1=%d, "
299 "postdiv2=%d, vco=%u khz, output=%u khz\n",
300 pll_con, div->fbdiv, div->refdiv, div->postdiv1,
301 div->postdiv2, vco_khz, output_khz);
302 assert(vco_khz >= VCO_MIN_KHZ && vco_khz <= VCO_MAX_KHZ &&
303 output_khz >= OUTPUT_MIN_KHZ && output_khz <= OUTPUT_MAX_KHZ &&
304 div->fbdiv >= PLL_DIV_MIN && div->fbdiv <= PLL_DIV_MAX);
305
306 /*
307 * When power on or changing PLL setting,
308 * we must force PLL into slow mode to ensure output stable clock.
309 */
310 rk_clrsetreg(&pll_con[3], PLL_MODE_MASK,
311 PLL_MODE_SLOW << PLL_MODE_SHIFT);
312
313 /* use integer mode */
314 rk_clrsetreg(&pll_con[3], PLL_DSMPD_MASK,
315 PLL_INTEGER_MODE << PLL_DSMPD_SHIFT);
316
317 rk_clrsetreg(&pll_con[0], PLL_FBDIV_MASK,
318 div->fbdiv << PLL_FBDIV_SHIFT);
319 rk_clrsetreg(&pll_con[1],
320 PLL_POSTDIV2_MASK | PLL_POSTDIV1_MASK |
321 PLL_REFDIV_MASK | PLL_REFDIV_SHIFT,
322 (div->postdiv2 << PLL_POSTDIV2_SHIFT) |
323 (div->postdiv1 << PLL_POSTDIV1_SHIFT) |
324 (div->refdiv << PLL_REFDIV_SHIFT));
325
326 /* waiting for pll lock */
327 while (!(readl(&pll_con[2]) & (1 << PLL_LOCK_STATUS_SHIFT)))
328 udelay(1);
329
330 /* pll enter normal mode */
331 rk_clrsetreg(&pll_con[3], PLL_MODE_MASK,
332 PLL_MODE_NORM << PLL_MODE_SHIFT);
333 }
334
335 static int pll_para_config(u32 freq_hz, struct pll_div *div)
336 {
337 u32 ref_khz = OSC_HZ / KHz, refdiv, fbdiv = 0;
338 u32 postdiv1, postdiv2 = 1;
339 u32 fref_khz;
340 u32 diff_khz, best_diff_khz;
341 const u32 max_refdiv = 63, max_fbdiv = 3200, min_fbdiv = 16;
342 const u32 max_postdiv1 = 7, max_postdiv2 = 7;
343 u32 vco_khz;
344 u32 freq_khz = freq_hz / KHz;
345
346 if (!freq_hz) {
347 printf("%s: the frequency can't be 0 Hz\n", __func__);
348 return -1;
349 }
350
351 postdiv1 = DIV_ROUND_UP(VCO_MIN_KHZ, freq_khz);
352 if (postdiv1 > max_postdiv1) {
353 postdiv2 = DIV_ROUND_UP(postdiv1, max_postdiv1);
354 postdiv1 = DIV_ROUND_UP(postdiv1, postdiv2);
355 }
356
357 vco_khz = freq_khz * postdiv1 * postdiv2;
358
359 if (vco_khz < VCO_MIN_KHZ || vco_khz > VCO_MAX_KHZ ||
360 postdiv2 > max_postdiv2) {
361 printf("%s: Cannot find out a supported VCO"
362 " for Frequency (%uHz).\n", __func__, freq_hz);
363 return -1;
364 }
365
366 div->postdiv1 = postdiv1;
367 div->postdiv2 = postdiv2;
368
369 best_diff_khz = vco_khz;
370 for (refdiv = 1; refdiv < max_refdiv && best_diff_khz; refdiv++) {
371 fref_khz = ref_khz / refdiv;
372
373 fbdiv = vco_khz / fref_khz;
374 if ((fbdiv >= max_fbdiv) || (fbdiv <= min_fbdiv))
375 continue;
376 diff_khz = vco_khz - fbdiv * fref_khz;
377 if (fbdiv + 1 < max_fbdiv && diff_khz > fref_khz / 2) {
378 fbdiv++;
379 diff_khz = fref_khz - diff_khz;
380 }
381
382 if (diff_khz >= best_diff_khz)
383 continue;
384
385 best_diff_khz = diff_khz;
386 div->refdiv = refdiv;
387 div->fbdiv = fbdiv;
388 }
389
390 if (best_diff_khz > 4 * (MHz/KHz)) {
391 printf("%s: Failed to match output frequency %u, "
392 "difference is %u Hz,exceed 4MHZ\n", __func__, freq_hz,
393 best_diff_khz * KHz);
394 return -1;
395 }
396 return 0;
397 }
398
399 #ifdef CONFIG_SPL_BUILD
400 static void rkclk_init(struct rk3399_cru *cru)
401 {
402 u32 aclk_div;
403 u32 hclk_div;
404 u32 pclk_div;
405
406 /*
407 * some cru registers changed by bootrom, we'd better reset them to
408 * reset/default values described in TRM to avoid confusion in kernel.
409 * Please consider these three lines as a fix of bootrom bug.
410 */
411 rk_clrsetreg(&cru->clksel_con[12], 0xffff, 0x4101);
412 rk_clrsetreg(&cru->clksel_con[19], 0xffff, 0x033f);
413 rk_clrsetreg(&cru->clksel_con[56], 0x0003, 0x0003);
414
415 /* configure gpll cpll */
416 rkclk_set_pll(&cru->gpll_con[0], &gpll_init_cfg);
417 rkclk_set_pll(&cru->cpll_con[0], &cpll_init_cfg);
418
419 /* configure perihp aclk, hclk, pclk */
420 aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1;
421 assert((aclk_div + 1) * PERIHP_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
422
423 hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1;
424 assert((hclk_div + 1) * PERIHP_HCLK_HZ ==
425 PERIHP_ACLK_HZ && (hclk_div < 0x4));
426
427 pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1;
428 assert((pclk_div + 1) * PERIHP_PCLK_HZ ==
429 PERIHP_ACLK_HZ && (pclk_div < 0x7));
430
431 rk_clrsetreg(&cru->clksel_con[14],
432 PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK |
433 ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK,
434 pclk_div << PCLK_PERIHP_DIV_CON_SHIFT |
435 hclk_div << HCLK_PERIHP_DIV_CON_SHIFT |
436 ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT |
437 aclk_div << ACLK_PERIHP_DIV_CON_SHIFT);
438
439 /* configure perilp0 aclk, hclk, pclk */
440 aclk_div = GPLL_HZ / PERILP0_ACLK_HZ - 1;
441 assert((aclk_div + 1) * PERILP0_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
442
443 hclk_div = PERILP0_ACLK_HZ / PERILP0_HCLK_HZ - 1;
444 assert((hclk_div + 1) * PERILP0_HCLK_HZ ==
445 PERILP0_ACLK_HZ && (hclk_div < 0x4));
446
447 pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1;
448 assert((pclk_div + 1) * PERILP0_PCLK_HZ ==
449 PERILP0_ACLK_HZ && (pclk_div < 0x7));
450
451 rk_clrsetreg(&cru->clksel_con[23],
452 PCLK_PERILP0_DIV_CON_MASK | HCLK_PERILP0_DIV_CON_MASK |
453 ACLK_PERILP0_PLL_SEL_MASK | ACLK_PERILP0_DIV_CON_MASK,
454 pclk_div << PCLK_PERILP0_DIV_CON_SHIFT |
455 hclk_div << HCLK_PERILP0_DIV_CON_SHIFT |
456 ACLK_PERILP0_PLL_SEL_GPLL << ACLK_PERILP0_PLL_SEL_SHIFT |
457 aclk_div << ACLK_PERILP0_DIV_CON_SHIFT);
458
459 /* perilp1 hclk select gpll as source */
460 hclk_div = GPLL_HZ / PERILP1_HCLK_HZ - 1;
461 assert((hclk_div + 1) * PERILP1_HCLK_HZ ==
462 GPLL_HZ && (hclk_div < 0x1f));
463
464 pclk_div = PERILP1_HCLK_HZ / PERILP1_HCLK_HZ - 1;
465 assert((pclk_div + 1) * PERILP1_HCLK_HZ ==
466 PERILP1_HCLK_HZ && (hclk_div < 0x7));
467
468 rk_clrsetreg(&cru->clksel_con[25],
469 PCLK_PERILP1_DIV_CON_MASK | HCLK_PERILP1_DIV_CON_MASK |
470 HCLK_PERILP1_PLL_SEL_MASK,
471 pclk_div << PCLK_PERILP1_DIV_CON_SHIFT |
472 hclk_div << HCLK_PERILP1_DIV_CON_SHIFT |
473 HCLK_PERILP1_PLL_SEL_GPLL << HCLK_PERILP1_PLL_SEL_SHIFT);
474 }
475 #endif
476
477 void rk3399_configure_cpu(struct rk3399_cru *cru,
478 enum apll_l_frequencies apll_l_freq)
479 {
480 u32 aclkm_div;
481 u32 pclk_dbg_div;
482 u32 atclk_div;
483
484 rkclk_set_pll(&cru->apll_l_con[0], apll_l_cfgs[apll_l_freq]);
485
486 aclkm_div = APLL_HZ / ACLKM_CORE_HZ - 1;
487 assert((aclkm_div + 1) * ACLKM_CORE_HZ == APLL_HZ &&
488 aclkm_div < 0x1f);
489
490 pclk_dbg_div = APLL_HZ / PCLK_DBG_HZ - 1;
491 assert((pclk_dbg_div + 1) * PCLK_DBG_HZ == APLL_HZ &&
492 pclk_dbg_div < 0x1f);
493
494 atclk_div = APLL_HZ / ATCLK_CORE_HZ - 1;
495 assert((atclk_div + 1) * ATCLK_CORE_HZ == APLL_HZ &&
496 atclk_div < 0x1f);
497
498 rk_clrsetreg(&cru->clksel_con[0],
499 ACLKM_CORE_L_DIV_CON_MASK | CLK_CORE_L_PLL_SEL_MASK |
500 CLK_CORE_L_DIV_MASK,
501 aclkm_div << ACLKM_CORE_L_DIV_CON_SHIFT |
502 CLK_CORE_L_PLL_SEL_ALPLL << CLK_CORE_L_PLL_SEL_SHIFT |
503 0 << CLK_CORE_L_DIV_SHIFT);
504
505 rk_clrsetreg(&cru->clksel_con[1],
506 PCLK_DBG_L_DIV_MASK | ATCLK_CORE_L_DIV_MASK,
507 pclk_dbg_div << PCLK_DBG_L_DIV_SHIFT |
508 atclk_div << ATCLK_CORE_L_DIV_SHIFT);
509 }
510 #define I2C_CLK_REG_MASK(bus) \
511 (I2C_DIV_CON_MASK << \
512 CLK_I2C ##bus## _DIV_CON_SHIFT | \
513 CLK_I2C_PLL_SEL_MASK << \
514 CLK_I2C ##bus## _PLL_SEL_SHIFT)
515
516 #define I2C_CLK_REG_VALUE(bus, clk_div) \
517 ((clk_div - 1) << \
518 CLK_I2C ##bus## _DIV_CON_SHIFT | \
519 CLK_I2C_PLL_SEL_GPLL << \
520 CLK_I2C ##bus## _PLL_SEL_SHIFT)
521
522 #define I2C_CLK_DIV_VALUE(con, bus) \
523 (con >> CLK_I2C ##bus## _DIV_CON_SHIFT) & \
524 I2C_DIV_CON_MASK;
525
526 #define I2C_PMUCLK_REG_MASK(bus) \
527 (I2C_DIV_CON_MASK << \
528 CLK_I2C ##bus## _DIV_CON_SHIFT)
529
530 #define I2C_PMUCLK_REG_VALUE(bus, clk_div) \
531 ((clk_div - 1) << \
532 CLK_I2C ##bus## _DIV_CON_SHIFT)
533
534 static ulong rk3399_i2c_get_clk(struct rk3399_cru *cru, ulong clk_id)
535 {
536 u32 div, con;
537
538 switch (clk_id) {
539 case SCLK_I2C1:
540 con = readl(&cru->clksel_con[61]);
541 div = I2C_CLK_DIV_VALUE(con, 1);
542 break;
543 case SCLK_I2C2:
544 con = readl(&cru->clksel_con[62]);
545 div = I2C_CLK_DIV_VALUE(con, 2);
546 break;
547 case SCLK_I2C3:
548 con = readl(&cru->clksel_con[63]);
549 div = I2C_CLK_DIV_VALUE(con, 3);
550 break;
551 case SCLK_I2C5:
552 con = readl(&cru->clksel_con[61]);
553 div = I2C_CLK_DIV_VALUE(con, 5);
554 break;
555 case SCLK_I2C6:
556 con = readl(&cru->clksel_con[62]);
557 div = I2C_CLK_DIV_VALUE(con, 6);
558 break;
559 case SCLK_I2C7:
560 con = readl(&cru->clksel_con[63]);
561 div = I2C_CLK_DIV_VALUE(con, 7);
562 break;
563 default:
564 printf("do not support this i2c bus\n");
565 return -EINVAL;
566 }
567
568 return DIV_TO_RATE(GPLL_HZ, div);
569 }
570
571 static ulong rk3399_i2c_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz)
572 {
573 int src_clk_div;
574
575 /* i2c0,4,8 src clock from ppll, i2c1,2,3,5,6,7 src clock from gpll*/
576 src_clk_div = GPLL_HZ / hz;
577 assert(src_clk_div - 1 < 127);
578
579 switch (clk_id) {
580 case SCLK_I2C1:
581 rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(1),
582 I2C_CLK_REG_VALUE(1, src_clk_div));
583 break;
584 case SCLK_I2C2:
585 rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(2),
586 I2C_CLK_REG_VALUE(2, src_clk_div));
587 break;
588 case SCLK_I2C3:
589 rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(3),
590 I2C_CLK_REG_VALUE(3, src_clk_div));
591 break;
592 case SCLK_I2C5:
593 rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(5),
594 I2C_CLK_REG_VALUE(5, src_clk_div));
595 break;
596 case SCLK_I2C6:
597 rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(6),
598 I2C_CLK_REG_VALUE(6, src_clk_div));
599 break;
600 case SCLK_I2C7:
601 rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(7),
602 I2C_CLK_REG_VALUE(7, src_clk_div));
603 break;
604 default:
605 printf("do not support this i2c bus\n");
606 return -EINVAL;
607 }
608
609 return rk3399_i2c_get_clk(cru, clk_id);
610 }
611
612 /*
613 * RK3399 SPI clocks have a common divider-width (7 bits) and a single bit
614 * to select either CPLL or GPLL as the clock-parent. The location within
615 * the enclosing CLKSEL_CON (i.e. div_shift and sel_shift) are variable.
616 */
617
618 struct spi_clkreg {
619 uint8_t reg; /* CLKSEL_CON[reg] register in CRU */
620 uint8_t div_shift;
621 uint8_t sel_shift;
622 };
623
624 /*
625 * The entries are numbered relative to their offset from SCLK_SPI0.
626 *
627 * Note that SCLK_SPI3 (which is configured via PMUCRU and requires different
628 * logic is not supported).
629 */
630 static const struct spi_clkreg spi_clkregs[] = {
631 [0] = { .reg = 59,
632 .div_shift = CLK_SPI0_PLL_DIV_CON_SHIFT,
633 .sel_shift = CLK_SPI0_PLL_SEL_SHIFT, },
634 [1] = { .reg = 59,
635 .div_shift = CLK_SPI1_PLL_DIV_CON_SHIFT,
636 .sel_shift = CLK_SPI1_PLL_SEL_SHIFT, },
637 [2] = { .reg = 60,
638 .div_shift = CLK_SPI2_PLL_DIV_CON_SHIFT,
639 .sel_shift = CLK_SPI2_PLL_SEL_SHIFT, },
640 [3] = { .reg = 60,
641 .div_shift = CLK_SPI4_PLL_DIV_CON_SHIFT,
642 .sel_shift = CLK_SPI4_PLL_SEL_SHIFT, },
643 [4] = { .reg = 58,
644 .div_shift = CLK_SPI5_PLL_DIV_CON_SHIFT,
645 .sel_shift = CLK_SPI5_PLL_SEL_SHIFT, },
646 };
647
648 static inline u32 extract_bits(u32 val, unsigned width, unsigned shift)
649 {
650 return (val >> shift) & ((1 << width) - 1);
651 }
652
653 static ulong rk3399_spi_get_clk(struct rk3399_cru *cru, ulong clk_id)
654 {
655 const struct spi_clkreg *spiclk = NULL;
656 u32 div, val;
657
658 switch (clk_id) {
659 case SCLK_SPI0 ... SCLK_SPI5:
660 spiclk = &spi_clkregs[clk_id - SCLK_SPI0];
661 break;
662
663 default:
664 error("%s: SPI clk-id %ld not supported\n", __func__, clk_id);
665 return -EINVAL;
666 }
667
668 val = readl(&cru->clksel_con[spiclk->reg]);
669 div = extract_bits(val, CLK_SPI_PLL_DIV_CON_WIDTH, spiclk->div_shift);
670
671 return DIV_TO_RATE(GPLL_HZ, div);
672 }
673
674 static ulong rk3399_spi_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz)
675 {
676 const struct spi_clkreg *spiclk = NULL;
677 int src_clk_div;
678
679 src_clk_div = RATE_TO_DIV(GPLL_HZ, hz);
680 assert(src_clk_div < 127);
681
682 switch (clk_id) {
683 case SCLK_SPI1 ... SCLK_SPI5:
684 spiclk = &spi_clkregs[clk_id - SCLK_SPI0];
685 break;
686
687 default:
688 error("%s: SPI clk-id %ld not supported\n", __func__, clk_id);
689 return -EINVAL;
690 }
691
692 rk_clrsetreg(&cru->clksel_con[spiclk->reg],
693 ((CLK_SPI_PLL_DIV_CON_MASK << spiclk->div_shift) |
694 (CLK_SPI_PLL_SEL_GPLL << spiclk->sel_shift)),
695 ((src_clk_div << spiclk->div_shift) |
696 (CLK_SPI_PLL_SEL_GPLL << spiclk->sel_shift)));
697
698 return rk3399_spi_get_clk(cru, clk_id);
699 }
700
701 static ulong rk3399_vop_set_clk(struct rk3399_cru *cru, ulong clk_id, u32 hz)
702 {
703 struct pll_div vpll_config = {0};
704 int aclk_vop = 198*MHz;
705 void *aclkreg_addr, *dclkreg_addr;
706 u32 div;
707
708 switch (clk_id) {
709 case DCLK_VOP0:
710 aclkreg_addr = &cru->clksel_con[47];
711 dclkreg_addr = &cru->clksel_con[49];
712 break;
713 case DCLK_VOP1:
714 aclkreg_addr = &cru->clksel_con[48];
715 dclkreg_addr = &cru->clksel_con[50];
716 break;
717 default:
718 return -EINVAL;
719 }
720 /* vop aclk source clk: cpll */
721 div = CPLL_HZ / aclk_vop;
722 assert(div - 1 < 32);
723
724 rk_clrsetreg(aclkreg_addr,
725 ACLK_VOP_PLL_SEL_MASK | ACLK_VOP_DIV_CON_MASK,
726 ACLK_VOP_PLL_SEL_CPLL << ACLK_VOP_PLL_SEL_SHIFT |
727 (div - 1) << ACLK_VOP_DIV_CON_SHIFT);
728
729 /* vop dclk source from vpll, and equals to vpll(means div == 1) */
730 if (pll_para_config(hz, &vpll_config))
731 return -1;
732
733 rkclk_set_pll(&cru->vpll_con[0], &vpll_config);
734
735 rk_clrsetreg(dclkreg_addr,
736 DCLK_VOP_DCLK_SEL_MASK | DCLK_VOP_PLL_SEL_MASK|
737 DCLK_VOP_DIV_CON_MASK,
738 DCLK_VOP_DCLK_SEL_DIVOUT << DCLK_VOP_DCLK_SEL_SHIFT |
739 DCLK_VOP_PLL_SEL_VPLL << DCLK_VOP_PLL_SEL_SHIFT |
740 (1 - 1) << DCLK_VOP_DIV_CON_SHIFT);
741
742 return hz;
743 }
744
745 static ulong rk3399_mmc_get_clk(struct rk3399_cru *cru, uint clk_id)
746 {
747 u32 div, con;
748
749 switch (clk_id) {
750 case SCLK_SDMMC:
751 con = readl(&cru->clksel_con[16]);
752 break;
753 case SCLK_EMMC:
754 con = readl(&cru->clksel_con[21]);
755 break;
756 default:
757 return -EINVAL;
758 }
759 div = (con & CLK_EMMC_DIV_CON_MASK) >> CLK_EMMC_DIV_CON_SHIFT;
760
761 if ((con & CLK_EMMC_PLL_MASK) >> CLK_EMMC_PLL_SHIFT
762 == CLK_EMMC_PLL_SEL_24M)
763 return DIV_TO_RATE(24*1000*1000, div);
764 else
765 return DIV_TO_RATE(GPLL_HZ, div);
766 }
767
768 static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru,
769 ulong clk_id, ulong set_rate)
770 {
771 int src_clk_div;
772 int aclk_emmc = 198*MHz;
773
774 switch (clk_id) {
775 case SCLK_SDMMC:
776 /* Select clk_sdmmc source from GPLL by default */
777 src_clk_div = GPLL_HZ / set_rate;
778
779 if (src_clk_div > 127) {
780 /* use 24MHz source for 400KHz clock */
781 src_clk_div = 24*1000*1000 / set_rate;
782 rk_clrsetreg(&cru->clksel_con[16],
783 CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
784 CLK_EMMC_PLL_SEL_24M << CLK_EMMC_PLL_SHIFT |
785 (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
786 } else {
787 rk_clrsetreg(&cru->clksel_con[16],
788 CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
789 CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
790 (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
791 }
792 break;
793 case SCLK_EMMC:
794 /* Select aclk_emmc source from GPLL */
795 src_clk_div = GPLL_HZ / aclk_emmc;
796 assert(src_clk_div - 1 < 31);
797
798 rk_clrsetreg(&cru->clksel_con[21],
799 ACLK_EMMC_PLL_SEL_MASK | ACLK_EMMC_DIV_CON_MASK,
800 ACLK_EMMC_PLL_SEL_GPLL << ACLK_EMMC_PLL_SEL_SHIFT |
801 (src_clk_div - 1) << ACLK_EMMC_DIV_CON_SHIFT);
802
803 /* Select clk_emmc source from GPLL too */
804 src_clk_div = GPLL_HZ / set_rate;
805 assert(src_clk_div - 1 < 127);
806
807 rk_clrsetreg(&cru->clksel_con[22],
808 CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
809 CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
810 (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
811 break;
812 default:
813 return -EINVAL;
814 }
815 return rk3399_mmc_get_clk(cru, clk_id);
816 }
817
818 #define PMUSGRF_DDR_RGN_CON16 0xff330040
819 static ulong rk3399_ddr_set_clk(struct rk3399_cru *cru,
820 ulong set_rate)
821 {
822 struct pll_div dpll_cfg;
823
824 /* IC ECO bug, need to set this register */
825 writel(0xc000c000, PMUSGRF_DDR_RGN_CON16);
826
827 /* clk_ddrc == DPLL = 24MHz / refdiv * fbdiv / postdiv1 / postdiv2 */
828 switch (set_rate) {
829 case 200*MHz:
830 dpll_cfg = (struct pll_div)
831 {.refdiv = 1, .fbdiv = 50, .postdiv1 = 6, .postdiv2 = 1};
832 break;
833 case 300*MHz:
834 dpll_cfg = (struct pll_div)
835 {.refdiv = 2, .fbdiv = 100, .postdiv1 = 4, .postdiv2 = 1};
836 break;
837 case 666*MHz:
838 dpll_cfg = (struct pll_div)
839 {.refdiv = 2, .fbdiv = 111, .postdiv1 = 2, .postdiv2 = 1};
840 break;
841 case 800*MHz:
842 dpll_cfg = (struct pll_div)
843 {.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1};
844 break;
845 case 933*MHz:
846 dpll_cfg = (struct pll_div)
847 {.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1};
848 break;
849 default:
850 error("Unsupported SDRAM frequency!,%ld\n", set_rate);
851 }
852 rkclk_set_pll(&cru->dpll_con[0], &dpll_cfg);
853
854 return set_rate;
855 }
856 static ulong rk3399_clk_get_rate(struct clk *clk)
857 {
858 struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
859 ulong rate = 0;
860
861 switch (clk->id) {
862 case 0 ... 63:
863 return 0;
864 case SCLK_SDMMC:
865 case SCLK_EMMC:
866 rate = rk3399_mmc_get_clk(priv->cru, clk->id);
867 break;
868 case SCLK_I2C1:
869 case SCLK_I2C2:
870 case SCLK_I2C3:
871 case SCLK_I2C5:
872 case SCLK_I2C6:
873 case SCLK_I2C7:
874 rate = rk3399_i2c_get_clk(priv->cru, clk->id);
875 break;
876 case SCLK_SPI0...SCLK_SPI5:
877 rate = rk3399_spi_get_clk(priv->cru, clk->id);
878 break;
879 case SCLK_UART0:
880 case SCLK_UART2:
881 return 24000000;
882 case DCLK_VOP0:
883 case DCLK_VOP1:
884 break;
885 default:
886 return -ENOENT;
887 }
888
889 return rate;
890 }
891
892 static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate)
893 {
894 struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
895 ulong ret = 0;
896
897 switch (clk->id) {
898 case 0 ... 63:
899 return 0;
900 case SCLK_SDMMC:
901 case SCLK_EMMC:
902 ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate);
903 break;
904 case SCLK_MAC:
905 /* nothing to do, as this is an external clock */
906 ret = rate;
907 break;
908 case SCLK_I2C1:
909 case SCLK_I2C2:
910 case SCLK_I2C3:
911 case SCLK_I2C5:
912 case SCLK_I2C6:
913 case SCLK_I2C7:
914 ret = rk3399_i2c_set_clk(priv->cru, clk->id, rate);
915 break;
916 case SCLK_SPI0...SCLK_SPI5:
917 ret = rk3399_spi_set_clk(priv->cru, clk->id, rate);
918 break;
919 case DCLK_VOP0:
920 case DCLK_VOP1:
921 ret = rk3399_vop_set_clk(priv->cru, clk->id, rate);
922 break;
923 case SCLK_DDRCLK:
924 ret = rk3399_ddr_set_clk(priv->cru, rate);
925 break;
926 default:
927 return -ENOENT;
928 }
929
930 return ret;
931 }
932
933 static struct clk_ops rk3399_clk_ops = {
934 .get_rate = rk3399_clk_get_rate,
935 .set_rate = rk3399_clk_set_rate,
936 };
937
938 static int rk3399_clk_probe(struct udevice *dev)
939 {
940 #ifdef CONFIG_SPL_BUILD
941 struct rk3399_clk_priv *priv = dev_get_priv(dev);
942
943 #if CONFIG_IS_ENABLED(OF_PLATDATA)
944 struct rk3399_clk_plat *plat = dev_get_platdata(dev);
945
946 priv->cru = map_sysmem(plat->dtd.reg[1], plat->dtd.reg[3]);
947 #endif
948 rkclk_init(priv->cru);
949 #endif
950 return 0;
951 }
952
953 static int rk3399_clk_ofdata_to_platdata(struct udevice *dev)
954 {
955 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
956 struct rk3399_clk_priv *priv = dev_get_priv(dev);
957
958 priv->cru = (struct rk3399_cru *)dev_get_addr(dev);
959 #endif
960 return 0;
961 }
962
963 static int rk3399_clk_bind(struct udevice *dev)
964 {
965 int ret;
966
967 /* The reset driver does not have a device node, so bind it here */
968 ret = device_bind_driver(gd->dm_root, "rk3399_sysreset", "reset", &dev);
969 if (ret)
970 printf("Warning: No RK3399 reset driver: ret=%d\n", ret);
971
972 return 0;
973 }
974
975 static const struct udevice_id rk3399_clk_ids[] = {
976 { .compatible = "rockchip,rk3399-cru" },
977 { }
978 };
979
980 U_BOOT_DRIVER(clk_rk3399) = {
981 .name = "rockchip_rk3399_cru",
982 .id = UCLASS_CLK,
983 .of_match = rk3399_clk_ids,
984 .priv_auto_alloc_size = sizeof(struct rk3399_clk_priv),
985 .ofdata_to_platdata = rk3399_clk_ofdata_to_platdata,
986 .ops = &rk3399_clk_ops,
987 .bind = rk3399_clk_bind,
988 .probe = rk3399_clk_probe,
989 #if CONFIG_IS_ENABLED(OF_PLATDATA)
990 .platdata_auto_alloc_size = sizeof(struct rk3399_clk_plat),
991 #endif
992 };
993
994 static ulong rk3399_i2c_get_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id)
995 {
996 u32 div, con;
997
998 switch (clk_id) {
999 case SCLK_I2C0_PMU:
1000 con = readl(&pmucru->pmucru_clksel[2]);
1001 div = I2C_CLK_DIV_VALUE(con, 0);
1002 break;
1003 case SCLK_I2C4_PMU:
1004 con = readl(&pmucru->pmucru_clksel[3]);
1005 div = I2C_CLK_DIV_VALUE(con, 4);
1006 break;
1007 case SCLK_I2C8_PMU:
1008 con = readl(&pmucru->pmucru_clksel[2]);
1009 div = I2C_CLK_DIV_VALUE(con, 8);
1010 break;
1011 default:
1012 printf("do not support this i2c bus\n");
1013 return -EINVAL;
1014 }
1015
1016 return DIV_TO_RATE(PPLL_HZ, div);
1017 }
1018
1019 static ulong rk3399_i2c_set_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id,
1020 uint hz)
1021 {
1022 int src_clk_div;
1023
1024 src_clk_div = PPLL_HZ / hz;
1025 assert(src_clk_div - 1 < 127);
1026
1027 switch (clk_id) {
1028 case SCLK_I2C0_PMU:
1029 rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(0),
1030 I2C_PMUCLK_REG_VALUE(0, src_clk_div));
1031 break;
1032 case SCLK_I2C4_PMU:
1033 rk_clrsetreg(&pmucru->pmucru_clksel[3], I2C_PMUCLK_REG_MASK(4),
1034 I2C_PMUCLK_REG_VALUE(4, src_clk_div));
1035 break;
1036 case SCLK_I2C8_PMU:
1037 rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(8),
1038 I2C_PMUCLK_REG_VALUE(8, src_clk_div));
1039 break;
1040 default:
1041 printf("do not support this i2c bus\n");
1042 return -EINVAL;
1043 }
1044
1045 return DIV_TO_RATE(PPLL_HZ, src_clk_div);
1046 }
1047
1048 static ulong rk3399_pwm_get_clk(struct rk3399_pmucru *pmucru)
1049 {
1050 u32 div, con;
1051
1052 /* PWM closk rate is same as pclk_pmu */
1053 con = readl(&pmucru->pmucru_clksel[0]);
1054 div = con & PMU_PCLK_DIV_CON_MASK;
1055
1056 return DIV_TO_RATE(PPLL_HZ, div);
1057 }
1058
1059 static ulong rk3399_pmuclk_get_rate(struct clk *clk)
1060 {
1061 struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev);
1062 ulong rate = 0;
1063
1064 switch (clk->id) {
1065 case PCLK_RKPWM_PMU:
1066 rate = rk3399_pwm_get_clk(priv->pmucru);
1067 break;
1068 case SCLK_I2C0_PMU:
1069 case SCLK_I2C4_PMU:
1070 case SCLK_I2C8_PMU:
1071 rate = rk3399_i2c_get_pmuclk(priv->pmucru, clk->id);
1072 break;
1073 default:
1074 return -ENOENT;
1075 }
1076
1077 return rate;
1078 }
1079
1080 static ulong rk3399_pmuclk_set_rate(struct clk *clk, ulong rate)
1081 {
1082 struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev);
1083 ulong ret = 0;
1084
1085 switch (clk->id) {
1086 case SCLK_I2C0_PMU:
1087 case SCLK_I2C4_PMU:
1088 case SCLK_I2C8_PMU:
1089 ret = rk3399_i2c_set_pmuclk(priv->pmucru, clk->id, rate);
1090 break;
1091 default:
1092 return -ENOENT;
1093 }
1094
1095 return ret;
1096 }
1097
1098 static struct clk_ops rk3399_pmuclk_ops = {
1099 .get_rate = rk3399_pmuclk_get_rate,
1100 .set_rate = rk3399_pmuclk_set_rate,
1101 };
1102
1103 #ifndef CONFIG_SPL_BUILD
1104 static void pmuclk_init(struct rk3399_pmucru *pmucru)
1105 {
1106 u32 pclk_div;
1107
1108 /* configure pmu pll(ppll) */
1109 rkclk_set_pll(&pmucru->ppll_con[0], &ppll_init_cfg);
1110
1111 /* configure pmu pclk */
1112 pclk_div = PPLL_HZ / PMU_PCLK_HZ - 1;
1113 rk_clrsetreg(&pmucru->pmucru_clksel[0],
1114 PMU_PCLK_DIV_CON_MASK,
1115 pclk_div << PMU_PCLK_DIV_CON_SHIFT);
1116 }
1117 #endif
1118
1119 static int rk3399_pmuclk_probe(struct udevice *dev)
1120 {
1121 #if CONFIG_IS_ENABLED(OF_PLATDATA) || !defined(CONFIG_SPL_BUILD)
1122 struct rk3399_pmuclk_priv *priv = dev_get_priv(dev);
1123 #endif
1124
1125 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1126 struct rk3399_pmuclk_plat *plat = dev_get_platdata(dev);
1127
1128 priv->pmucru = map_sysmem(plat->dtd.reg[1], plat->dtd.reg[3]);
1129 #endif
1130
1131 #ifndef CONFIG_SPL_BUILD
1132 pmuclk_init(priv->pmucru);
1133 #endif
1134 return 0;
1135 }
1136
1137 static int rk3399_pmuclk_ofdata_to_platdata(struct udevice *dev)
1138 {
1139 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
1140 struct rk3399_pmuclk_priv *priv = dev_get_priv(dev);
1141
1142 priv->pmucru = (struct rk3399_pmucru *)dev_get_addr(dev);
1143 #endif
1144 return 0;
1145 }
1146
1147 static const struct udevice_id rk3399_pmuclk_ids[] = {
1148 { .compatible = "rockchip,rk3399-pmucru" },
1149 { }
1150 };
1151
1152 U_BOOT_DRIVER(rockchip_rk3399_pmuclk) = {
1153 .name = "rockchip_rk3399_pmucru",
1154 .id = UCLASS_CLK,
1155 .of_match = rk3399_pmuclk_ids,
1156 .priv_auto_alloc_size = sizeof(struct rk3399_pmuclk_priv),
1157 .ofdata_to_platdata = rk3399_pmuclk_ofdata_to_platdata,
1158 .ops = &rk3399_pmuclk_ops,
1159 .probe = rk3399_pmuclk_probe,
1160 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1161 .platdata_auto_alloc_size = sizeof(struct rk3399_pmuclk_plat),
1162 #endif
1163 };
"Das U-Boot" Source Tree