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b0b3c865 KY |
1 | /* |
2 | * (C) Copyright 2015 Google, Inc | |
8fa6979b | 3 | * (C) 2017 Theobroma Systems Design und Consulting GmbH |
b0b3c865 KY |
4 | * |
5 | * SPDX-License-Identifier: GPL-2.0 | |
6 | */ | |
7 | ||
8 | #include <common.h> | |
9 | #include <clk-uclass.h> | |
10 | #include <dm.h> | |
5ae2fd97 | 11 | #include <dt-structs.h> |
b0b3c865 | 12 | #include <errno.h> |
5ae2fd97 | 13 | #include <mapmem.h> |
b0b3c865 KY |
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 | ||
5ae2fd97 KY |
24 | #if CONFIG_IS_ENABLED(OF_PLATDATA) |
25 | struct rk3399_clk_plat { | |
26 | struct dtd_rockchip_rk3399_cru dtd; | |
5e79f443 KY |
27 | }; |
28 | ||
5ae2fd97 KY |
29 | struct rk3399_pmuclk_plat { |
30 | struct dtd_rockchip_rk3399_pmucru dtd; | |
31 | }; | |
32 | #endif | |
33 | ||
b0b3c865 KY |
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 | ||
61dff33b | 51 | #if defined(CONFIG_SPL_BUILD) |
b0b3c865 KY |
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); | |
61dff33b | 54 | #else |
b0b3c865 | 55 | static const struct pll_div ppll_init_cfg = PLL_DIVISORS(PPLL_HZ, 2, 2, 1); |
61dff33b | 56 | #endif |
b0b3c865 KY |
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, | |
5e79f443 KY |
109 | CLK_I2C8_DIV_CON_SHIFT = 8, |
110 | CLK_I2C0_DIV_CON_SHIFT = 0, | |
b0b3c865 KY |
111 | |
112 | /* PMUCRU_CLKSEL_CON3 */ | |
5e79f443 | 113 | CLK_I2C4_DIV_CON_SHIFT = 0, |
b0b3c865 KY |
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, | |
fd4b2dc0 | 156 | CLK_EMMC_PLL_SEL_24M = 0x5, |
b0b3c865 KY |
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 */ | |
8fa6979b PT |
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, | |
b0b3c865 KY |
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 | ||
5ae2fd97 | 399 | #ifdef CONFIG_SPL_BUILD |
b0b3c865 KY |
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 | } | |
5ae2fd97 | 475 | #endif |
b0b3c865 KY |
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 | ||
5e79f443 KY |
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 | ||
b0b3c865 KY |
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 | ||
beb90a53 | 609 | return rk3399_i2c_get_clk(cru, clk_id); |
b0b3c865 KY |
610 | } |
611 | ||
8fa6979b PT |
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 | ||
217273cd KY |
679 | src_clk_div = DIV_ROUND_UP(GPLL_HZ, hz) - 1; |
680 | assert(src_clk_div < 128); | |
8fa6979b PT |
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 | ||
beb90a53 | 698 | return rk3399_spi_get_clk(cru, clk_id); |
8fa6979b PT |
699 | } |
700 | ||
b0b3c865 KY |
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) { | |
998c61ae | 750 | case HCLK_SDMMC: |
b0b3c865 KY |
751 | case SCLK_SDMMC: |
752 | con = readl(&cru->clksel_con[16]); | |
3a94d75d KY |
753 | /* dwmmc controller have internal div 2 */ |
754 | div = 2; | |
b0b3c865 KY |
755 | break; |
756 | case SCLK_EMMC: | |
757 | con = readl(&cru->clksel_con[21]); | |
3a94d75d | 758 | div = 1; |
b0b3c865 KY |
759 | break; |
760 | default: | |
761 | return -EINVAL; | |
762 | } | |
b0b3c865 | 763 | |
3a94d75d | 764 | div *= (con & CLK_EMMC_DIV_CON_MASK) >> CLK_EMMC_DIV_CON_SHIFT; |
fd4b2dc0 KY |
765 | if ((con & CLK_EMMC_PLL_MASK) >> CLK_EMMC_PLL_SHIFT |
766 | == CLK_EMMC_PLL_SEL_24M) | |
3a94d75d | 767 | return DIV_TO_RATE(OSC_HZ, div); |
fd4b2dc0 KY |
768 | else |
769 | return DIV_TO_RATE(GPLL_HZ, div); | |
b0b3c865 KY |
770 | } |
771 | ||
772 | static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru, | |
773 | ulong clk_id, ulong set_rate) | |
774 | { | |
775 | int src_clk_div; | |
776 | int aclk_emmc = 198*MHz; | |
777 | ||
778 | switch (clk_id) { | |
998c61ae | 779 | case HCLK_SDMMC: |
b0b3c865 | 780 | case SCLK_SDMMC: |
fd4b2dc0 | 781 | /* Select clk_sdmmc source from GPLL by default */ |
3a94d75d KY |
782 | /* mmc clock defaulg div 2 internal, provide double in cru */ |
783 | src_clk_div = DIV_ROUND_UP(GPLL_HZ / 2, set_rate); | |
b0b3c865 | 784 | |
217273cd | 785 | if (src_clk_div > 128) { |
fd4b2dc0 | 786 | /* use 24MHz source for 400KHz clock */ |
3a94d75d | 787 | src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, set_rate); |
217273cd | 788 | assert(src_clk_div - 1 < 128); |
fd4b2dc0 KY |
789 | rk_clrsetreg(&cru->clksel_con[16], |
790 | CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK, | |
791 | CLK_EMMC_PLL_SEL_24M << CLK_EMMC_PLL_SHIFT | | |
792 | (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT); | |
793 | } else { | |
794 | rk_clrsetreg(&cru->clksel_con[16], | |
795 | CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK, | |
796 | CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT | | |
797 | (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT); | |
798 | } | |
b0b3c865 KY |
799 | break; |
800 | case SCLK_EMMC: | |
801 | /* Select aclk_emmc source from GPLL */ | |
217273cd KY |
802 | src_clk_div = DIV_ROUND_UP(GPLL_HZ , aclk_emmc); |
803 | assert(src_clk_div - 1 < 32); | |
b0b3c865 KY |
804 | |
805 | rk_clrsetreg(&cru->clksel_con[21], | |
806 | ACLK_EMMC_PLL_SEL_MASK | ACLK_EMMC_DIV_CON_MASK, | |
807 | ACLK_EMMC_PLL_SEL_GPLL << ACLK_EMMC_PLL_SEL_SHIFT | | |
808 | (src_clk_div - 1) << ACLK_EMMC_DIV_CON_SHIFT); | |
809 | ||
810 | /* Select clk_emmc source from GPLL too */ | |
217273cd KY |
811 | src_clk_div = DIV_ROUND_UP(GPLL_HZ, set_rate); |
812 | assert(src_clk_div - 1 < 128); | |
b0b3c865 KY |
813 | |
814 | rk_clrsetreg(&cru->clksel_con[22], | |
815 | CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK, | |
816 | CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT | | |
817 | (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT); | |
818 | break; | |
819 | default: | |
820 | return -EINVAL; | |
821 | } | |
822 | return rk3399_mmc_get_clk(cru, clk_id); | |
823 | } | |
824 | ||
5ae2fd97 KY |
825 | #define PMUSGRF_DDR_RGN_CON16 0xff330040 |
826 | static ulong rk3399_ddr_set_clk(struct rk3399_cru *cru, | |
827 | ulong set_rate) | |
828 | { | |
829 | struct pll_div dpll_cfg; | |
830 | ||
831 | /* IC ECO bug, need to set this register */ | |
832 | writel(0xc000c000, PMUSGRF_DDR_RGN_CON16); | |
833 | ||
834 | /* clk_ddrc == DPLL = 24MHz / refdiv * fbdiv / postdiv1 / postdiv2 */ | |
835 | switch (set_rate) { | |
836 | case 200*MHz: | |
837 | dpll_cfg = (struct pll_div) | |
838 | {.refdiv = 1, .fbdiv = 50, .postdiv1 = 6, .postdiv2 = 1}; | |
839 | break; | |
840 | case 300*MHz: | |
841 | dpll_cfg = (struct pll_div) | |
842 | {.refdiv = 2, .fbdiv = 100, .postdiv1 = 4, .postdiv2 = 1}; | |
843 | break; | |
844 | case 666*MHz: | |
845 | dpll_cfg = (struct pll_div) | |
846 | {.refdiv = 2, .fbdiv = 111, .postdiv1 = 2, .postdiv2 = 1}; | |
847 | break; | |
848 | case 800*MHz: | |
849 | dpll_cfg = (struct pll_div) | |
850 | {.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1}; | |
851 | break; | |
852 | case 933*MHz: | |
853 | dpll_cfg = (struct pll_div) | |
854 | {.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1}; | |
855 | break; | |
856 | default: | |
857 | error("Unsupported SDRAM frequency!,%ld\n", set_rate); | |
858 | } | |
859 | rkclk_set_pll(&cru->dpll_con[0], &dpll_cfg); | |
860 | ||
861 | return set_rate; | |
862 | } | |
b0b3c865 KY |
863 | static ulong rk3399_clk_get_rate(struct clk *clk) |
864 | { | |
865 | struct rk3399_clk_priv *priv = dev_get_priv(clk->dev); | |
866 | ulong rate = 0; | |
867 | ||
868 | switch (clk->id) { | |
869 | case 0 ... 63: | |
870 | return 0; | |
998c61ae | 871 | case HCLK_SDMMC: |
b0b3c865 KY |
872 | case SCLK_SDMMC: |
873 | case SCLK_EMMC: | |
874 | rate = rk3399_mmc_get_clk(priv->cru, clk->id); | |
875 | break; | |
876 | case SCLK_I2C1: | |
877 | case SCLK_I2C2: | |
878 | case SCLK_I2C3: | |
879 | case SCLK_I2C5: | |
880 | case SCLK_I2C6: | |
881 | case SCLK_I2C7: | |
882 | rate = rk3399_i2c_get_clk(priv->cru, clk->id); | |
883 | break; | |
8fa6979b PT |
884 | case SCLK_SPI0...SCLK_SPI5: |
885 | rate = rk3399_spi_get_clk(priv->cru, clk->id); | |
886 | break; | |
887 | case SCLK_UART0: | |
888 | case SCLK_UART2: | |
889 | return 24000000; | |
ffc1fac5 PT |
890 | break; |
891 | case PCLK_HDMI_CTRL: | |
892 | break; | |
b0b3c865 KY |
893 | case DCLK_VOP0: |
894 | case DCLK_VOP1: | |
895 | break; | |
a70feb46 PT |
896 | case PCLK_EFUSE1024NS: |
897 | break; | |
b0b3c865 KY |
898 | default: |
899 | return -ENOENT; | |
900 | } | |
901 | ||
902 | return rate; | |
903 | } | |
904 | ||
905 | static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate) | |
906 | { | |
907 | struct rk3399_clk_priv *priv = dev_get_priv(clk->dev); | |
908 | ulong ret = 0; | |
909 | ||
910 | switch (clk->id) { | |
911 | case 0 ... 63: | |
912 | return 0; | |
998c61ae | 913 | case HCLK_SDMMC: |
b0b3c865 KY |
914 | case SCLK_SDMMC: |
915 | case SCLK_EMMC: | |
916 | ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate); | |
917 | break; | |
65d83303 PT |
918 | case SCLK_MAC: |
919 | /* nothing to do, as this is an external clock */ | |
920 | ret = rate; | |
921 | break; | |
b0b3c865 KY |
922 | case SCLK_I2C1: |
923 | case SCLK_I2C2: | |
924 | case SCLK_I2C3: | |
925 | case SCLK_I2C5: | |
926 | case SCLK_I2C6: | |
927 | case SCLK_I2C7: | |
928 | ret = rk3399_i2c_set_clk(priv->cru, clk->id, rate); | |
929 | break; | |
8fa6979b PT |
930 | case SCLK_SPI0...SCLK_SPI5: |
931 | ret = rk3399_spi_set_clk(priv->cru, clk->id, rate); | |
932 | break; | |
ffc1fac5 PT |
933 | case PCLK_HDMI_CTRL: |
934 | case PCLK_VIO_GRF: | |
935 | /* the PCLK gates for video are enabled by default */ | |
936 | break; | |
b0b3c865 KY |
937 | case DCLK_VOP0: |
938 | case DCLK_VOP1: | |
5e79f443 | 939 | ret = rk3399_vop_set_clk(priv->cru, clk->id, rate); |
b0b3c865 | 940 | break; |
5ae2fd97 KY |
941 | case SCLK_DDRCLK: |
942 | ret = rk3399_ddr_set_clk(priv->cru, rate); | |
943 | break; | |
a70feb46 PT |
944 | case PCLK_EFUSE1024NS: |
945 | break; | |
b0b3c865 KY |
946 | default: |
947 | return -ENOENT; | |
948 | } | |
949 | ||
950 | return ret; | |
951 | } | |
952 | ||
953 | static struct clk_ops rk3399_clk_ops = { | |
954 | .get_rate = rk3399_clk_get_rate, | |
955 | .set_rate = rk3399_clk_set_rate, | |
956 | }; | |
957 | ||
b0b3c865 KY |
958 | static int rk3399_clk_probe(struct udevice *dev) |
959 | { | |
5ae2fd97 | 960 | #ifdef CONFIG_SPL_BUILD |
b0b3c865 KY |
961 | struct rk3399_clk_priv *priv = dev_get_priv(dev); |
962 | ||
5ae2fd97 KY |
963 | #if CONFIG_IS_ENABLED(OF_PLATDATA) |
964 | struct rk3399_clk_plat *plat = dev_get_platdata(dev); | |
b0b3c865 | 965 | |
c20ee0ed | 966 | priv->cru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]); |
5ae2fd97 KY |
967 | #endif |
968 | rkclk_init(priv->cru); | |
969 | #endif | |
b0b3c865 KY |
970 | return 0; |
971 | } | |
972 | ||
973 | static int rk3399_clk_ofdata_to_platdata(struct udevice *dev) | |
974 | { | |
5ae2fd97 | 975 | #if !CONFIG_IS_ENABLED(OF_PLATDATA) |
b0b3c865 KY |
976 | struct rk3399_clk_priv *priv = dev_get_priv(dev); |
977 | ||
a821c4af | 978 | priv->cru = (struct rk3399_cru *)devfdt_get_addr(dev); |
5ae2fd97 | 979 | #endif |
b0b3c865 KY |
980 | return 0; |
981 | } | |
982 | ||
983 | static int rk3399_clk_bind(struct udevice *dev) | |
984 | { | |
985 | int ret; | |
986 | ||
987 | /* The reset driver does not have a device node, so bind it here */ | |
988 | ret = device_bind_driver(gd->dm_root, "rk3399_sysreset", "reset", &dev); | |
989 | if (ret) | |
990 | printf("Warning: No RK3399 reset driver: ret=%d\n", ret); | |
991 | ||
992 | return 0; | |
993 | } | |
994 | ||
995 | static const struct udevice_id rk3399_clk_ids[] = { | |
996 | { .compatible = "rockchip,rk3399-cru" }, | |
997 | { } | |
998 | }; | |
999 | ||
1000 | U_BOOT_DRIVER(clk_rk3399) = { | |
5ae2fd97 | 1001 | .name = "rockchip_rk3399_cru", |
b0b3c865 KY |
1002 | .id = UCLASS_CLK, |
1003 | .of_match = rk3399_clk_ids, | |
1004 | .priv_auto_alloc_size = sizeof(struct rk3399_clk_priv), | |
1005 | .ofdata_to_platdata = rk3399_clk_ofdata_to_platdata, | |
1006 | .ops = &rk3399_clk_ops, | |
1007 | .bind = rk3399_clk_bind, | |
1008 | .probe = rk3399_clk_probe, | |
5ae2fd97 KY |
1009 | #if CONFIG_IS_ENABLED(OF_PLATDATA) |
1010 | .platdata_auto_alloc_size = sizeof(struct rk3399_clk_plat), | |
1011 | #endif | |
b0b3c865 | 1012 | }; |
5e79f443 KY |
1013 | |
1014 | static ulong rk3399_i2c_get_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id) | |
1015 | { | |
1016 | u32 div, con; | |
1017 | ||
1018 | switch (clk_id) { | |
1019 | case SCLK_I2C0_PMU: | |
1020 | con = readl(&pmucru->pmucru_clksel[2]); | |
1021 | div = I2C_CLK_DIV_VALUE(con, 0); | |
1022 | break; | |
1023 | case SCLK_I2C4_PMU: | |
1024 | con = readl(&pmucru->pmucru_clksel[3]); | |
1025 | div = I2C_CLK_DIV_VALUE(con, 4); | |
1026 | break; | |
1027 | case SCLK_I2C8_PMU: | |
1028 | con = readl(&pmucru->pmucru_clksel[2]); | |
1029 | div = I2C_CLK_DIV_VALUE(con, 8); | |
1030 | break; | |
1031 | default: | |
1032 | printf("do not support this i2c bus\n"); | |
1033 | return -EINVAL; | |
1034 | } | |
1035 | ||
1036 | return DIV_TO_RATE(PPLL_HZ, div); | |
1037 | } | |
1038 | ||
1039 | static ulong rk3399_i2c_set_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id, | |
1040 | uint hz) | |
1041 | { | |
1042 | int src_clk_div; | |
1043 | ||
1044 | src_clk_div = PPLL_HZ / hz; | |
1045 | assert(src_clk_div - 1 < 127); | |
1046 | ||
1047 | switch (clk_id) { | |
1048 | case SCLK_I2C0_PMU: | |
1049 | rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(0), | |
1050 | I2C_PMUCLK_REG_VALUE(0, src_clk_div)); | |
1051 | break; | |
1052 | case SCLK_I2C4_PMU: | |
1053 | rk_clrsetreg(&pmucru->pmucru_clksel[3], I2C_PMUCLK_REG_MASK(4), | |
1054 | I2C_PMUCLK_REG_VALUE(4, src_clk_div)); | |
1055 | break; | |
1056 | case SCLK_I2C8_PMU: | |
1057 | rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(8), | |
1058 | I2C_PMUCLK_REG_VALUE(8, src_clk_div)); | |
1059 | break; | |
1060 | default: | |
1061 | printf("do not support this i2c bus\n"); | |
1062 | return -EINVAL; | |
1063 | } | |
1064 | ||
1065 | return DIV_TO_RATE(PPLL_HZ, src_clk_div); | |
1066 | } | |
1067 | ||
1068 | static ulong rk3399_pwm_get_clk(struct rk3399_pmucru *pmucru) | |
1069 | { | |
1070 | u32 div, con; | |
1071 | ||
1072 | /* PWM closk rate is same as pclk_pmu */ | |
1073 | con = readl(&pmucru->pmucru_clksel[0]); | |
1074 | div = con & PMU_PCLK_DIV_CON_MASK; | |
1075 | ||
1076 | return DIV_TO_RATE(PPLL_HZ, div); | |
1077 | } | |
1078 | ||
1079 | static ulong rk3399_pmuclk_get_rate(struct clk *clk) | |
1080 | { | |
1081 | struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev); | |
1082 | ulong rate = 0; | |
1083 | ||
1084 | switch (clk->id) { | |
1085 | case PCLK_RKPWM_PMU: | |
1086 | rate = rk3399_pwm_get_clk(priv->pmucru); | |
1087 | break; | |
1088 | case SCLK_I2C0_PMU: | |
1089 | case SCLK_I2C4_PMU: | |
1090 | case SCLK_I2C8_PMU: | |
1091 | rate = rk3399_i2c_get_pmuclk(priv->pmucru, clk->id); | |
1092 | break; | |
1093 | default: | |
1094 | return -ENOENT; | |
1095 | } | |
1096 | ||
1097 | return rate; | |
1098 | } | |
1099 | ||
1100 | static ulong rk3399_pmuclk_set_rate(struct clk *clk, ulong rate) | |
1101 | { | |
1102 | struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev); | |
1103 | ulong ret = 0; | |
1104 | ||
1105 | switch (clk->id) { | |
1106 | case SCLK_I2C0_PMU: | |
1107 | case SCLK_I2C4_PMU: | |
1108 | case SCLK_I2C8_PMU: | |
1109 | ret = rk3399_i2c_set_pmuclk(priv->pmucru, clk->id, rate); | |
1110 | break; | |
1111 | default: | |
1112 | return -ENOENT; | |
1113 | } | |
1114 | ||
1115 | return ret; | |
1116 | } | |
1117 | ||
1118 | static struct clk_ops rk3399_pmuclk_ops = { | |
1119 | .get_rate = rk3399_pmuclk_get_rate, | |
1120 | .set_rate = rk3399_pmuclk_set_rate, | |
1121 | }; | |
1122 | ||
5ae2fd97 | 1123 | #ifndef CONFIG_SPL_BUILD |
5e79f443 KY |
1124 | static void pmuclk_init(struct rk3399_pmucru *pmucru) |
1125 | { | |
1126 | u32 pclk_div; | |
1127 | ||
1128 | /* configure pmu pll(ppll) */ | |
1129 | rkclk_set_pll(&pmucru->ppll_con[0], &ppll_init_cfg); | |
1130 | ||
1131 | /* configure pmu pclk */ | |
1132 | pclk_div = PPLL_HZ / PMU_PCLK_HZ - 1; | |
5e79f443 KY |
1133 | rk_clrsetreg(&pmucru->pmucru_clksel[0], |
1134 | PMU_PCLK_DIV_CON_MASK, | |
1135 | pclk_div << PMU_PCLK_DIV_CON_SHIFT); | |
1136 | } | |
5ae2fd97 | 1137 | #endif |
5e79f443 KY |
1138 | |
1139 | static int rk3399_pmuclk_probe(struct udevice *dev) | |
1140 | { | |
61dff33b | 1141 | #if CONFIG_IS_ENABLED(OF_PLATDATA) || !defined(CONFIG_SPL_BUILD) |
5e79f443 | 1142 | struct rk3399_pmuclk_priv *priv = dev_get_priv(dev); |
61dff33b | 1143 | #endif |
5e79f443 | 1144 | |
5ae2fd97 KY |
1145 | #if CONFIG_IS_ENABLED(OF_PLATDATA) |
1146 | struct rk3399_pmuclk_plat *plat = dev_get_platdata(dev); | |
1147 | ||
c20ee0ed | 1148 | priv->pmucru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]); |
5ae2fd97 | 1149 | #endif |
5e79f443 | 1150 | |
5ae2fd97 KY |
1151 | #ifndef CONFIG_SPL_BUILD |
1152 | pmuclk_init(priv->pmucru); | |
1153 | #endif | |
5e79f443 KY |
1154 | return 0; |
1155 | } | |
1156 | ||
1157 | static int rk3399_pmuclk_ofdata_to_platdata(struct udevice *dev) | |
1158 | { | |
5ae2fd97 | 1159 | #if !CONFIG_IS_ENABLED(OF_PLATDATA) |
5e79f443 KY |
1160 | struct rk3399_pmuclk_priv *priv = dev_get_priv(dev); |
1161 | ||
a821c4af | 1162 | priv->pmucru = (struct rk3399_pmucru *)devfdt_get_addr(dev); |
5ae2fd97 | 1163 | #endif |
5e79f443 KY |
1164 | return 0; |
1165 | } | |
1166 | ||
1167 | static const struct udevice_id rk3399_pmuclk_ids[] = { | |
1168 | { .compatible = "rockchip,rk3399-pmucru" }, | |
1169 | { } | |
1170 | }; | |
1171 | ||
c8a6bc96 | 1172 | U_BOOT_DRIVER(rockchip_rk3399_pmuclk) = { |
5ae2fd97 | 1173 | .name = "rockchip_rk3399_pmucru", |
5e79f443 KY |
1174 | .id = UCLASS_CLK, |
1175 | .of_match = rk3399_pmuclk_ids, | |
1176 | .priv_auto_alloc_size = sizeof(struct rk3399_pmuclk_priv), | |
1177 | .ofdata_to_platdata = rk3399_pmuclk_ofdata_to_platdata, | |
1178 | .ops = &rk3399_pmuclk_ops, | |
1179 | .probe = rk3399_pmuclk_probe, | |
5ae2fd97 KY |
1180 | #if CONFIG_IS_ENABLED(OF_PLATDATA) |
1181 | .platdata_auto_alloc_size = sizeof(struct rk3399_pmuclk_plat), | |
1182 | #endif | |
5e79f443 | 1183 | }; |