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99c15650 SG |
1 | /* |
2 | * (C) Copyright 2015 Google, Inc | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0 | |
5 | */ | |
6 | ||
7 | #include <common.h> | |
135aa950 | 8 | #include <clk-uclass.h> |
99c15650 | 9 | #include <dm.h> |
2d143bd6 | 10 | #include <dt-structs.h> |
99c15650 | 11 | #include <errno.h> |
2d143bd6 | 12 | #include <mapmem.h> |
99c15650 SG |
13 | #include <syscon.h> |
14 | #include <asm/io.h> | |
15 | #include <asm/arch/clock.h> | |
16 | #include <asm/arch/cru_rk3288.h> | |
17 | #include <asm/arch/grf_rk3288.h> | |
18 | #include <asm/arch/hardware.h> | |
898d6439 | 19 | #include <dt-bindings/clock/rk3288-cru.h> |
64b7faa7 | 20 | #include <dm/device-internal.h> |
99c15650 | 21 | #include <dm/lists.h> |
64b7faa7 | 22 | #include <dm/uclass-internal.h> |
abd0128e | 23 | #include <linux/log2.h> |
99c15650 SG |
24 | |
25 | DECLARE_GLOBAL_DATA_PTR; | |
26 | ||
2d143bd6 SG |
27 | struct rk3288_clk_plat { |
28 | #if CONFIG_IS_ENABLED(OF_PLATDATA) | |
29 | struct dtd_rockchip_rk3288_cru dtd; | |
30 | #endif | |
31 | }; | |
32 | ||
99c15650 SG |
33 | struct rk3288_clk_priv { |
34 | struct rk3288_grf *grf; | |
35 | struct rk3288_cru *cru; | |
36 | ulong rate; | |
37 | }; | |
38 | ||
39 | struct pll_div { | |
40 | u32 nr; | |
41 | u32 nf; | |
42 | u32 no; | |
43 | }; | |
44 | ||
45 | enum { | |
46 | VCO_MAX_HZ = 2200U * 1000000, | |
47 | VCO_MIN_HZ = 440 * 1000000, | |
48 | OUTPUT_MAX_HZ = 2200U * 1000000, | |
49 | OUTPUT_MIN_HZ = 27500000, | |
50 | FREF_MAX_HZ = 2200U * 1000000, | |
c3f03ffb | 51 | FREF_MIN_HZ = 269 * 1000, |
99c15650 SG |
52 | }; |
53 | ||
54 | enum { | |
55 | /* PLL CON0 */ | |
56 | PLL_OD_MASK = 0x0f, | |
57 | ||
58 | /* PLL CON1 */ | |
59 | PLL_NF_MASK = 0x1fff, | |
60 | ||
61 | /* PLL CON2 */ | |
62 | PLL_BWADJ_MASK = 0x0fff, | |
63 | ||
64 | /* PLL CON3 */ | |
65 | PLL_RESET_SHIFT = 5, | |
66 | ||
dae594f2 SG |
67 | /* CLKSEL0 */ |
68 | CORE_SEL_PLL_MASK = 1, | |
69 | CORE_SEL_PLL_SHIFT = 15, | |
70 | A17_DIV_MASK = 0x1f, | |
71 | A17_DIV_SHIFT = 8, | |
72 | MP_DIV_MASK = 0xf, | |
73 | MP_DIV_SHIFT = 4, | |
74 | M0_DIV_MASK = 0xf, | |
75 | M0_DIV_SHIFT = 0, | |
76 | ||
99c15650 SG |
77 | /* CLKSEL1: pd bus clk pll sel: codec or general */ |
78 | PD_BUS_SEL_PLL_MASK = 15, | |
79 | PD_BUS_SEL_CPLL = 0, | |
80 | PD_BUS_SEL_GPLL, | |
81 | ||
82 | /* pd bus pclk div: pclk = pd_bus_aclk /(div + 1) */ | |
83 | PD_BUS_PCLK_DIV_SHIFT = 12, | |
84 | PD_BUS_PCLK_DIV_MASK = 7, | |
85 | ||
86 | /* pd bus hclk div: aclk_bus: hclk_bus = 1:1 or 2:1 or 4:1 */ | |
87 | PD_BUS_HCLK_DIV_SHIFT = 8, | |
88 | PD_BUS_HCLK_DIV_MASK = 3, | |
89 | ||
90 | /* pd bus aclk div: pd_bus_aclk = pd_bus_src_clk /(div0 * div1) */ | |
91 | PD_BUS_ACLK_DIV0_SHIFT = 3, | |
92 | PD_BUS_ACLK_DIV0_MASK = 0x1f, | |
93 | PD_BUS_ACLK_DIV1_SHIFT = 0, | |
94 | PD_BUS_ACLK_DIV1_MASK = 0x7, | |
95 | ||
96 | /* | |
97 | * CLKSEL10 | |
98 | * peripheral bus pclk div: | |
99 | * aclk_bus: pclk_bus = 1:1 or 2:1 or 4:1 or 8:1 | |
100 | */ | |
c87c129f SG |
101 | PERI_SEL_PLL_MASK = 1, |
102 | PERI_SEL_PLL_SHIFT = 15, | |
103 | PERI_SEL_CPLL = 0, | |
104 | PERI_SEL_GPLL, | |
105 | ||
99c15650 | 106 | PERI_PCLK_DIV_SHIFT = 12, |
c87c129f | 107 | PERI_PCLK_DIV_MASK = 3, |
99c15650 SG |
108 | |
109 | /* peripheral bus hclk div: aclk_bus: hclk_bus = 1:1 or 2:1 or 4:1 */ | |
110 | PERI_HCLK_DIV_SHIFT = 8, | |
111 | PERI_HCLK_DIV_MASK = 3, | |
112 | ||
113 | /* | |
114 | * peripheral bus aclk div: | |
115 | * aclk_periph = periph_clk_src / (peri_aclk_div_con + 1) | |
116 | */ | |
117 | PERI_ACLK_DIV_SHIFT = 0, | |
118 | PERI_ACLK_DIV_MASK = 0x1f, | |
119 | ||
99c15650 SG |
120 | SOCSTS_DPLL_LOCK = 1 << 5, |
121 | SOCSTS_APLL_LOCK = 1 << 6, | |
122 | SOCSTS_CPLL_LOCK = 1 << 7, | |
123 | SOCSTS_GPLL_LOCK = 1 << 8, | |
124 | SOCSTS_NPLL_LOCK = 1 << 9, | |
125 | }; | |
126 | ||
127 | #define RATE_TO_DIV(input_rate, output_rate) \ | |
128 | ((input_rate) / (output_rate) - 1); | |
129 | ||
130 | #define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1)) | |
131 | ||
132 | #define PLL_DIVISORS(hz, _nr, _no) {\ | |
133 | .nr = _nr, .nf = (u32)((u64)hz * _nr * _no / OSC_HZ), .no = _no};\ | |
134 | _Static_assert(((u64)hz * _nr * _no / OSC_HZ) * OSC_HZ /\ | |
135 | (_nr * _no) == hz, #hz "Hz cannot be hit with PLL "\ | |
136 | "divisors on line " __stringify(__LINE__)); | |
137 | ||
138 | /* Keep divisors as low as possible to reduce jitter and power usage */ | |
139 | static const struct pll_div apll_init_cfg = PLL_DIVISORS(APLL_HZ, 1, 1); | |
140 | static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2); | |
141 | static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2); | |
142 | ||
5ddf5d77 SG |
143 | void *rockchip_get_cru(void) |
144 | { | |
145 | struct rk3288_clk_priv *priv; | |
146 | struct udevice *dev; | |
147 | int ret; | |
148 | ||
c3aad6f6 | 149 | ret = rockchip_get_clk(&dev); |
5ddf5d77 SG |
150 | if (ret) |
151 | return ERR_PTR(ret); | |
135aa950 | 152 | |
5ddf5d77 | 153 | priv = dev_get_priv(dev); |
135aa950 | 154 | |
5ddf5d77 SG |
155 | return priv->cru; |
156 | } | |
157 | ||
99c15650 SG |
158 | static int rkclk_set_pll(struct rk3288_cru *cru, enum rk_clk_id clk_id, |
159 | const struct pll_div *div) | |
160 | { | |
161 | int pll_id = rk_pll_id(clk_id); | |
162 | struct rk3288_pll *pll = &cru->pll[pll_id]; | |
163 | /* All PLLs have same VCO and output frequency range restrictions. */ | |
164 | uint vco_hz = OSC_HZ / 1000 * div->nf / div->nr * 1000; | |
165 | uint output_hz = vco_hz / div->no; | |
166 | ||
c87c129f SG |
167 | debug("PLL at %x: nf=%d, nr=%d, no=%d, vco=%u Hz, output=%u Hz\n", |
168 | (uint)pll, div->nf, div->nr, div->no, vco_hz, output_hz); | |
99c15650 SG |
169 | assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ && |
170 | output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ && | |
171 | (div->no == 1 || !(div->no % 2))); | |
172 | ||
c87c129f | 173 | /* enter reset */ |
99c15650 SG |
174 | rk_setreg(&pll->con3, 1 << PLL_RESET_SHIFT); |
175 | ||
176 | rk_clrsetreg(&pll->con0, | |
177 | CLKR_MASK << CLKR_SHIFT | PLL_OD_MASK, | |
178 | ((div->nr - 1) << CLKR_SHIFT) | (div->no - 1)); | |
179 | rk_clrsetreg(&pll->con1, CLKF_MASK, div->nf - 1); | |
180 | rk_clrsetreg(&pll->con2, PLL_BWADJ_MASK, (div->nf >> 1) - 1); | |
181 | ||
182 | udelay(10); | |
183 | ||
c87c129f | 184 | /* return from reset */ |
99c15650 SG |
185 | rk_clrreg(&pll->con3, 1 << PLL_RESET_SHIFT); |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
99c15650 SG |
190 | static int rkclk_configure_ddr(struct rk3288_cru *cru, struct rk3288_grf *grf, |
191 | unsigned int hz) | |
192 | { | |
193 | static const struct pll_div dpll_cfg[] = { | |
194 | {.nf = 25, .nr = 2, .no = 1}, | |
195 | {.nf = 400, .nr = 9, .no = 2}, | |
196 | {.nf = 500, .nr = 9, .no = 2}, | |
197 | {.nf = 100, .nr = 3, .no = 1}, | |
198 | }; | |
199 | int cfg; | |
200 | ||
99c15650 SG |
201 | switch (hz) { |
202 | case 300000000: | |
203 | cfg = 0; | |
204 | break; | |
205 | case 533000000: /* actually 533.3P MHz */ | |
206 | cfg = 1; | |
207 | break; | |
208 | case 666000000: /* actually 666.6P MHz */ | |
209 | cfg = 2; | |
210 | break; | |
211 | case 800000000: | |
212 | cfg = 3; | |
213 | break; | |
214 | default: | |
c87c129f | 215 | debug("Unsupported SDRAM frequency"); |
99c15650 SG |
216 | return -EINVAL; |
217 | } | |
218 | ||
219 | /* pll enter slow-mode */ | |
220 | rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK << DPLL_MODE_SHIFT, | |
221 | DPLL_MODE_SLOW << DPLL_MODE_SHIFT); | |
222 | ||
223 | rkclk_set_pll(cru, CLK_DDR, &dpll_cfg[cfg]); | |
224 | ||
225 | /* wait for pll lock */ | |
226 | while (!(readl(&grf->soc_status[1]) & SOCSTS_DPLL_LOCK)) | |
227 | udelay(1); | |
228 | ||
229 | /* PLL enter normal-mode */ | |
230 | rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK << DPLL_MODE_SHIFT, | |
009741fb | 231 | DPLL_MODE_NORMAL << DPLL_MODE_SHIFT); |
99c15650 SG |
232 | |
233 | return 0; | |
234 | } | |
235 | ||
830a6081 SG |
236 | #ifndef CONFIG_SPL_BUILD |
237 | #define VCO_MAX_KHZ 2200000 | |
238 | #define VCO_MIN_KHZ 440000 | |
239 | #define FREF_MAX_KHZ 2200000 | |
240 | #define FREF_MIN_KHZ 269 | |
241 | ||
242 | static int pll_para_config(ulong freq_hz, struct pll_div *div, uint *ext_div) | |
243 | { | |
244 | uint ref_khz = OSC_HZ / 1000, nr, nf = 0; | |
245 | uint fref_khz; | |
246 | uint diff_khz, best_diff_khz; | |
247 | const uint max_nr = 1 << 6, max_nf = 1 << 12, max_no = 1 << 4; | |
248 | uint vco_khz; | |
249 | uint no = 1; | |
250 | uint freq_khz = freq_hz / 1000; | |
251 | ||
252 | if (!freq_hz) { | |
253 | printf("%s: the frequency can not be 0 Hz\n", __func__); | |
254 | return -EINVAL; | |
255 | } | |
256 | ||
257 | no = DIV_ROUND_UP(VCO_MIN_KHZ, freq_khz); | |
258 | if (ext_div) { | |
259 | *ext_div = DIV_ROUND_UP(no, max_no); | |
260 | no = DIV_ROUND_UP(no, *ext_div); | |
261 | } | |
262 | ||
263 | /* only even divisors (and 1) are supported */ | |
264 | if (no > 1) | |
265 | no = DIV_ROUND_UP(no, 2) * 2; | |
266 | ||
267 | vco_khz = freq_khz * no; | |
268 | if (ext_div) | |
269 | vco_khz *= *ext_div; | |
270 | ||
271 | if (vco_khz < VCO_MIN_KHZ || vco_khz > VCO_MAX_KHZ || no > max_no) { | |
272 | printf("%s: Cannot find out a supported VCO for Frequency (%luHz).\n", | |
273 | __func__, freq_hz); | |
274 | return -1; | |
275 | } | |
276 | ||
277 | div->no = no; | |
278 | ||
279 | best_diff_khz = vco_khz; | |
280 | for (nr = 1; nr < max_nr && best_diff_khz; nr++) { | |
281 | fref_khz = ref_khz / nr; | |
282 | if (fref_khz < FREF_MIN_KHZ) | |
283 | break; | |
284 | if (fref_khz > FREF_MAX_KHZ) | |
285 | continue; | |
286 | ||
287 | nf = vco_khz / fref_khz; | |
288 | if (nf >= max_nf) | |
289 | continue; | |
290 | diff_khz = vco_khz - nf * fref_khz; | |
291 | if (nf + 1 < max_nf && diff_khz > fref_khz / 2) { | |
292 | nf++; | |
293 | diff_khz = fref_khz - diff_khz; | |
294 | } | |
295 | ||
296 | if (diff_khz >= best_diff_khz) | |
297 | continue; | |
298 | ||
299 | best_diff_khz = diff_khz; | |
300 | div->nr = nr; | |
301 | div->nf = nf; | |
302 | } | |
303 | ||
304 | if (best_diff_khz > 4 * 1000) { | |
305 | printf("%s: Failed to match output frequency %lu, difference is %u Hz, exceed 4MHZ\n", | |
306 | __func__, freq_hz, best_diff_khz * 1000); | |
307 | return -EINVAL; | |
308 | } | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
0aefc0b0 SS |
313 | static int rockchip_mac_set_clk(struct rk3288_cru *cru, |
314 | int periph, uint freq) | |
315 | { | |
316 | /* Assuming mac_clk is fed by an external clock */ | |
317 | rk_clrsetreg(&cru->cru_clksel_con[21], | |
318 | RMII_EXTCLK_MASK << RMII_EXTCLK_SHIFT, | |
319 | RMII_EXTCLK_SELECT_EXT_CLK << RMII_EXTCLK_SHIFT); | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
830a6081 SG |
324 | static int rockchip_vop_set_clk(struct rk3288_cru *cru, struct rk3288_grf *grf, |
325 | int periph, unsigned int rate_hz) | |
326 | { | |
327 | struct pll_div npll_config = {0}; | |
328 | u32 lcdc_div; | |
329 | int ret; | |
330 | ||
331 | ret = pll_para_config(rate_hz, &npll_config, &lcdc_div); | |
332 | if (ret) | |
333 | return ret; | |
334 | ||
335 | rk_clrsetreg(&cru->cru_mode_con, NPLL_MODE_MASK << NPLL_MODE_SHIFT, | |
336 | NPLL_MODE_SLOW << NPLL_MODE_SHIFT); | |
337 | rkclk_set_pll(cru, CLK_NEW, &npll_config); | |
338 | ||
339 | /* waiting for pll lock */ | |
340 | while (1) { | |
341 | if (readl(&grf->soc_status[1]) & SOCSTS_NPLL_LOCK) | |
342 | break; | |
343 | udelay(1); | |
344 | } | |
345 | ||
346 | rk_clrsetreg(&cru->cru_mode_con, NPLL_MODE_MASK << NPLL_MODE_SHIFT, | |
347 | NPLL_MODE_NORMAL << NPLL_MODE_SHIFT); | |
348 | ||
349 | /* vop dclk source clk: npll,dclk_div: 1 */ | |
350 | switch (periph) { | |
351 | case DCLK_VOP0: | |
352 | rk_clrsetreg(&cru->cru_clksel_con[27], 0xff << 8 | 3 << 0, | |
353 | (lcdc_div - 1) << 8 | 2 << 0); | |
354 | break; | |
355 | case DCLK_VOP1: | |
356 | rk_clrsetreg(&cru->cru_clksel_con[29], 0xff << 8 | 3 << 6, | |
357 | (lcdc_div - 1) << 8 | 2 << 6); | |
358 | break; | |
359 | } | |
360 | ||
361 | return 0; | |
362 | } | |
363 | #endif | |
364 | ||
99c15650 SG |
365 | #ifdef CONFIG_SPL_BUILD |
366 | static void rkclk_init(struct rk3288_cru *cru, struct rk3288_grf *grf) | |
367 | { | |
368 | u32 aclk_div; | |
369 | u32 hclk_div; | |
370 | u32 pclk_div; | |
371 | ||
372 | /* pll enter slow-mode */ | |
373 | rk_clrsetreg(&cru->cru_mode_con, | |
374 | GPLL_MODE_MASK << GPLL_MODE_SHIFT | | |
375 | CPLL_MODE_MASK << CPLL_MODE_SHIFT, | |
376 | GPLL_MODE_SLOW << GPLL_MODE_SHIFT | | |
377 | CPLL_MODE_SLOW << CPLL_MODE_SHIFT); | |
378 | ||
379 | /* init pll */ | |
380 | rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg); | |
381 | rkclk_set_pll(cru, CLK_CODEC, &cpll_init_cfg); | |
382 | ||
383 | /* waiting for pll lock */ | |
384 | while ((readl(&grf->soc_status[1]) & | |
385 | (SOCSTS_CPLL_LOCK | SOCSTS_GPLL_LOCK)) != | |
386 | (SOCSTS_CPLL_LOCK | SOCSTS_GPLL_LOCK)) | |
387 | udelay(1); | |
388 | ||
389 | /* | |
390 | * pd_bus clock pll source selection and | |
391 | * set up dependent divisors for PCLK/HCLK and ACLK clocks. | |
392 | */ | |
393 | aclk_div = GPLL_HZ / PD_BUS_ACLK_HZ - 1; | |
394 | assert((aclk_div + 1) * PD_BUS_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f); | |
395 | hclk_div = PD_BUS_ACLK_HZ / PD_BUS_HCLK_HZ - 1; | |
396 | assert((hclk_div + 1) * PD_BUS_HCLK_HZ == | |
397 | PD_BUS_ACLK_HZ && (hclk_div < 0x4) && (hclk_div != 0x2)); | |
398 | ||
399 | pclk_div = PD_BUS_ACLK_HZ / PD_BUS_PCLK_HZ - 1; | |
400 | assert((pclk_div + 1) * PD_BUS_PCLK_HZ == | |
401 | PD_BUS_ACLK_HZ && pclk_div < 0x7); | |
402 | ||
403 | rk_clrsetreg(&cru->cru_clksel_con[1], | |
404 | PD_BUS_PCLK_DIV_MASK << PD_BUS_PCLK_DIV_SHIFT | | |
405 | PD_BUS_HCLK_DIV_MASK << PD_BUS_HCLK_DIV_SHIFT | | |
406 | PD_BUS_ACLK_DIV0_MASK << PD_BUS_ACLK_DIV0_SHIFT | | |
407 | PD_BUS_ACLK_DIV1_MASK << PD_BUS_ACLK_DIV1_SHIFT, | |
408 | pclk_div << PD_BUS_PCLK_DIV_SHIFT | | |
409 | hclk_div << PD_BUS_HCLK_DIV_SHIFT | | |
410 | aclk_div << PD_BUS_ACLK_DIV0_SHIFT | | |
411 | 0 << 0); | |
412 | ||
413 | /* | |
414 | * peri clock pll source selection and | |
415 | * set up dependent divisors for PCLK/HCLK and ACLK clocks. | |
416 | */ | |
417 | aclk_div = GPLL_HZ / PERI_ACLK_HZ - 1; | |
418 | assert((aclk_div + 1) * PERI_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f); | |
419 | ||
abd0128e | 420 | hclk_div = ilog2(PERI_ACLK_HZ / PERI_HCLK_HZ); |
99c15650 SG |
421 | assert((1 << hclk_div) * PERI_HCLK_HZ == |
422 | PERI_ACLK_HZ && (hclk_div < 0x4)); | |
423 | ||
abd0128e | 424 | pclk_div = ilog2(PERI_ACLK_HZ / PERI_PCLK_HZ); |
99c15650 SG |
425 | assert((1 << pclk_div) * PERI_PCLK_HZ == |
426 | PERI_ACLK_HZ && (pclk_div < 0x4)); | |
427 | ||
428 | rk_clrsetreg(&cru->cru_clksel_con[10], | |
429 | PERI_PCLK_DIV_MASK << PERI_PCLK_DIV_SHIFT | | |
430 | PERI_HCLK_DIV_MASK << PERI_HCLK_DIV_SHIFT | | |
431 | PERI_ACLK_DIV_MASK << PERI_ACLK_DIV_SHIFT, | |
c87c129f | 432 | PERI_SEL_GPLL << PERI_SEL_PLL_SHIFT | |
99c15650 SG |
433 | pclk_div << PERI_PCLK_DIV_SHIFT | |
434 | hclk_div << PERI_HCLK_DIV_SHIFT | | |
435 | aclk_div << PERI_ACLK_DIV_SHIFT); | |
436 | ||
437 | /* PLL enter normal-mode */ | |
438 | rk_clrsetreg(&cru->cru_mode_con, | |
439 | GPLL_MODE_MASK << GPLL_MODE_SHIFT | | |
440 | CPLL_MODE_MASK << CPLL_MODE_SHIFT, | |
009741fb SG |
441 | GPLL_MODE_NORMAL << GPLL_MODE_SHIFT | |
442 | CPLL_MODE_NORMAL << CPLL_MODE_SHIFT); | |
99c15650 SG |
443 | } |
444 | #endif | |
445 | ||
b339b5db | 446 | void rk3288_clk_configure_cpu(struct rk3288_cru *cru, struct rk3288_grf *grf) |
dae594f2 SG |
447 | { |
448 | /* pll enter slow-mode */ | |
449 | rk_clrsetreg(&cru->cru_mode_con, | |
450 | APLL_MODE_MASK << APLL_MODE_SHIFT, | |
451 | APLL_MODE_SLOW << APLL_MODE_SHIFT); | |
452 | ||
453 | rkclk_set_pll(cru, CLK_ARM, &apll_init_cfg); | |
454 | ||
455 | /* waiting for pll lock */ | |
456 | while (!(readl(&grf->soc_status[1]) & SOCSTS_APLL_LOCK)) | |
457 | udelay(1); | |
458 | ||
459 | /* | |
460 | * core clock pll source selection and | |
461 | * set up dependent divisors for MPAXI/M0AXI and ARM clocks. | |
462 | * core clock select apll, apll clk = 1800MHz | |
463 | * arm clk = 1800MHz, mpclk = 450MHz, m0clk = 900MHz | |
464 | */ | |
465 | rk_clrsetreg(&cru->cru_clksel_con[0], | |
466 | CORE_SEL_PLL_MASK << CORE_SEL_PLL_SHIFT | | |
467 | A17_DIV_MASK << A17_DIV_SHIFT | | |
468 | MP_DIV_MASK << MP_DIV_SHIFT | | |
469 | M0_DIV_MASK << M0_DIV_SHIFT, | |
470 | 0 << A17_DIV_SHIFT | | |
471 | 3 << MP_DIV_SHIFT | | |
472 | 1 << M0_DIV_SHIFT); | |
473 | ||
474 | /* | |
475 | * set up dependent divisors for L2RAM/ATCLK and PCLK clocks. | |
476 | * l2ramclk = 900MHz, atclk = 450MHz, pclk_dbg = 450MHz | |
477 | */ | |
478 | rk_clrsetreg(&cru->cru_clksel_con[37], | |
479 | CLK_L2RAM_DIV_MASK << CLK_L2RAM_DIV_SHIFT | | |
480 | ATCLK_CORE_DIV_CON_MASK << ATCLK_CORE_DIV_CON_SHIFT | | |
481 | PCLK_CORE_DBG_DIV_MASK >> PCLK_CORE_DBG_DIV_SHIFT, | |
482 | 1 << CLK_L2RAM_DIV_SHIFT | | |
483 | 3 << ATCLK_CORE_DIV_CON_SHIFT | | |
484 | 3 << PCLK_CORE_DBG_DIV_SHIFT); | |
485 | ||
486 | /* PLL enter normal-mode */ | |
487 | rk_clrsetreg(&cru->cru_mode_con, | |
488 | APLL_MODE_MASK << APLL_MODE_SHIFT, | |
489 | APLL_MODE_NORMAL << APLL_MODE_SHIFT); | |
490 | } | |
491 | ||
99c15650 SG |
492 | /* Get pll rate by id */ |
493 | static uint32_t rkclk_pll_get_rate(struct rk3288_cru *cru, | |
494 | enum rk_clk_id clk_id) | |
495 | { | |
496 | uint32_t nr, no, nf; | |
497 | uint32_t con; | |
498 | int pll_id = rk_pll_id(clk_id); | |
499 | struct rk3288_pll *pll = &cru->pll[pll_id]; | |
500 | static u8 clk_shift[CLK_COUNT] = { | |
009741fb SG |
501 | 0xff, APLL_MODE_SHIFT, DPLL_MODE_SHIFT, CPLL_MODE_SHIFT, |
502 | GPLL_MODE_SHIFT, NPLL_MODE_SHIFT | |
99c15650 SG |
503 | }; |
504 | uint shift; | |
505 | ||
506 | con = readl(&cru->cru_mode_con); | |
507 | shift = clk_shift[clk_id]; | |
009741fb SG |
508 | switch ((con >> shift) & APLL_MODE_MASK) { |
509 | case APLL_MODE_SLOW: | |
99c15650 | 510 | return OSC_HZ; |
009741fb | 511 | case APLL_MODE_NORMAL: |
99c15650 SG |
512 | /* normal mode */ |
513 | con = readl(&pll->con0); | |
514 | no = ((con >> CLKOD_SHIFT) & CLKOD_MASK) + 1; | |
515 | nr = ((con >> CLKR_SHIFT) & CLKR_MASK) + 1; | |
516 | con = readl(&pll->con1); | |
517 | nf = ((con >> CLKF_SHIFT) & CLKF_MASK) + 1; | |
518 | ||
519 | return (24 * nf / (nr * no)) * 1000000; | |
009741fb | 520 | case APLL_MODE_DEEP: |
99c15650 SG |
521 | default: |
522 | return 32768; | |
523 | } | |
524 | } | |
525 | ||
542635a0 | 526 | static ulong rockchip_mmc_get_clk(struct rk3288_cru *cru, uint gclk_rate, |
898d6439 | 527 | int periph) |
99c15650 SG |
528 | { |
529 | uint src_rate; | |
530 | uint div, mux; | |
531 | u32 con; | |
532 | ||
533 | switch (periph) { | |
898d6439 | 534 | case HCLK_EMMC: |
99c15650 SG |
535 | con = readl(&cru->cru_clksel_con[12]); |
536 | mux = (con >> EMMC_PLL_SHIFT) & EMMC_PLL_MASK; | |
537 | div = (con >> EMMC_DIV_SHIFT) & EMMC_DIV_MASK; | |
538 | break; | |
898d6439 SG |
539 | case HCLK_SDMMC: |
540 | con = readl(&cru->cru_clksel_con[11]); | |
99c15650 SG |
541 | mux = (con >> MMC0_PLL_SHIFT) & MMC0_PLL_MASK; |
542 | div = (con >> MMC0_DIV_SHIFT) & MMC0_DIV_MASK; | |
543 | break; | |
898d6439 | 544 | case HCLK_SDIO0: |
99c15650 SG |
545 | con = readl(&cru->cru_clksel_con[12]); |
546 | mux = (con >> SDIO0_PLL_SHIFT) & SDIO0_PLL_MASK; | |
547 | div = (con >> SDIO0_DIV_SHIFT) & SDIO0_DIV_MASK; | |
548 | break; | |
549 | default: | |
550 | return -EINVAL; | |
551 | } | |
552 | ||
542635a0 | 553 | src_rate = mux == EMMC_PLL_SELECT_24MHZ ? OSC_HZ : gclk_rate; |
99c15650 SG |
554 | return DIV_TO_RATE(src_rate, div); |
555 | } | |
556 | ||
542635a0 | 557 | static ulong rockchip_mmc_set_clk(struct rk3288_cru *cru, uint gclk_rate, |
898d6439 | 558 | int periph, uint freq) |
99c15650 SG |
559 | { |
560 | int src_clk_div; | |
561 | int mux; | |
562 | ||
542635a0 SG |
563 | debug("%s: gclk_rate=%u\n", __func__, gclk_rate); |
564 | src_clk_div = RATE_TO_DIV(gclk_rate, freq); | |
99c15650 SG |
565 | |
566 | if (src_clk_div > 0x3f) { | |
567 | src_clk_div = RATE_TO_DIV(OSC_HZ, freq); | |
568 | mux = EMMC_PLL_SELECT_24MHZ; | |
569 | assert((int)EMMC_PLL_SELECT_24MHZ == | |
570 | (int)MMC0_PLL_SELECT_24MHZ); | |
571 | } else { | |
572 | mux = EMMC_PLL_SELECT_GENERAL; | |
573 | assert((int)EMMC_PLL_SELECT_GENERAL == | |
574 | (int)MMC0_PLL_SELECT_GENERAL); | |
575 | } | |
576 | switch (periph) { | |
898d6439 | 577 | case HCLK_EMMC: |
99c15650 SG |
578 | rk_clrsetreg(&cru->cru_clksel_con[12], |
579 | EMMC_PLL_MASK << EMMC_PLL_SHIFT | | |
580 | EMMC_DIV_MASK << EMMC_DIV_SHIFT, | |
581 | mux << EMMC_PLL_SHIFT | | |
582 | (src_clk_div - 1) << EMMC_DIV_SHIFT); | |
583 | break; | |
898d6439 | 584 | case HCLK_SDMMC: |
99c15650 SG |
585 | rk_clrsetreg(&cru->cru_clksel_con[11], |
586 | MMC0_PLL_MASK << MMC0_PLL_SHIFT | | |
587 | MMC0_DIV_MASK << MMC0_DIV_SHIFT, | |
588 | mux << MMC0_PLL_SHIFT | | |
589 | (src_clk_div - 1) << MMC0_DIV_SHIFT); | |
590 | break; | |
898d6439 | 591 | case HCLK_SDIO0: |
99c15650 SG |
592 | rk_clrsetreg(&cru->cru_clksel_con[12], |
593 | SDIO0_PLL_MASK << SDIO0_PLL_SHIFT | | |
594 | SDIO0_DIV_MASK << SDIO0_DIV_SHIFT, | |
595 | mux << SDIO0_PLL_SHIFT | | |
596 | (src_clk_div - 1) << SDIO0_DIV_SHIFT); | |
597 | break; | |
598 | default: | |
599 | return -EINVAL; | |
600 | } | |
601 | ||
542635a0 | 602 | return rockchip_mmc_get_clk(cru, gclk_rate, periph); |
99c15650 SG |
603 | } |
604 | ||
542635a0 | 605 | static ulong rockchip_spi_get_clk(struct rk3288_cru *cru, uint gclk_rate, |
898d6439 | 606 | int periph) |
99c15650 SG |
607 | { |
608 | uint div, mux; | |
609 | u32 con; | |
610 | ||
611 | switch (periph) { | |
898d6439 | 612 | case SCLK_SPI0: |
99c15650 SG |
613 | con = readl(&cru->cru_clksel_con[25]); |
614 | mux = (con >> SPI0_PLL_SHIFT) & SPI0_PLL_MASK; | |
615 | div = (con >> SPI0_DIV_SHIFT) & SPI0_DIV_MASK; | |
616 | break; | |
898d6439 | 617 | case SCLK_SPI1: |
99c15650 SG |
618 | con = readl(&cru->cru_clksel_con[25]); |
619 | mux = (con >> SPI1_PLL_SHIFT) & SPI1_PLL_MASK; | |
620 | div = (con >> SPI1_DIV_SHIFT) & SPI1_DIV_MASK; | |
621 | break; | |
898d6439 | 622 | case SCLK_SPI2: |
99c15650 SG |
623 | con = readl(&cru->cru_clksel_con[39]); |
624 | mux = (con >> SPI2_PLL_SHIFT) & SPI2_PLL_MASK; | |
625 | div = (con >> SPI2_DIV_SHIFT) & SPI2_DIV_MASK; | |
626 | break; | |
627 | default: | |
628 | return -EINVAL; | |
629 | } | |
630 | assert(mux == SPI0_PLL_SELECT_GENERAL); | |
631 | ||
542635a0 | 632 | return DIV_TO_RATE(gclk_rate, div); |
99c15650 SG |
633 | } |
634 | ||
542635a0 | 635 | static ulong rockchip_spi_set_clk(struct rk3288_cru *cru, uint gclk_rate, |
898d6439 | 636 | int periph, uint freq) |
99c15650 SG |
637 | { |
638 | int src_clk_div; | |
639 | ||
542635a0 SG |
640 | debug("%s: clk_general_rate=%u\n", __func__, gclk_rate); |
641 | src_clk_div = RATE_TO_DIV(gclk_rate, freq); | |
99c15650 | 642 | switch (periph) { |
898d6439 | 643 | case SCLK_SPI0: |
99c15650 SG |
644 | rk_clrsetreg(&cru->cru_clksel_con[25], |
645 | SPI0_PLL_MASK << SPI0_PLL_SHIFT | | |
646 | SPI0_DIV_MASK << SPI0_DIV_SHIFT, | |
647 | SPI0_PLL_SELECT_GENERAL << SPI0_PLL_SHIFT | | |
648 | src_clk_div << SPI0_DIV_SHIFT); | |
649 | break; | |
898d6439 | 650 | case SCLK_SPI1: |
99c15650 SG |
651 | rk_clrsetreg(&cru->cru_clksel_con[25], |
652 | SPI1_PLL_MASK << SPI1_PLL_SHIFT | | |
653 | SPI1_DIV_MASK << SPI1_DIV_SHIFT, | |
654 | SPI1_PLL_SELECT_GENERAL << SPI1_PLL_SHIFT | | |
655 | src_clk_div << SPI1_DIV_SHIFT); | |
656 | break; | |
898d6439 | 657 | case SCLK_SPI2: |
99c15650 SG |
658 | rk_clrsetreg(&cru->cru_clksel_con[39], |
659 | SPI2_PLL_MASK << SPI2_PLL_SHIFT | | |
660 | SPI2_DIV_MASK << SPI2_DIV_SHIFT, | |
661 | SPI2_PLL_SELECT_GENERAL << SPI2_PLL_SHIFT | | |
662 | src_clk_div << SPI2_DIV_SHIFT); | |
663 | break; | |
664 | default: | |
665 | return -EINVAL; | |
666 | } | |
667 | ||
542635a0 | 668 | return rockchip_spi_get_clk(cru, gclk_rate, periph); |
99c15650 SG |
669 | } |
670 | ||
135aa950 | 671 | static ulong rk3288_clk_get_rate(struct clk *clk) |
4f43673e | 672 | { |
135aa950 | 673 | struct rk3288_clk_priv *priv = dev_get_priv(clk->dev); |
4f43673e | 674 | ulong new_rate, gclk_rate; |
4f43673e | 675 | |
135aa950 SW |
676 | gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL); |
677 | switch (clk->id) { | |
678 | case 0 ... 63: | |
679 | new_rate = rkclk_pll_get_rate(priv->cru, clk->id); | |
680 | break; | |
4f43673e | 681 | case HCLK_EMMC: |
342999f9 | 682 | case HCLK_SDMMC: |
4f43673e | 683 | case HCLK_SDIO0: |
135aa950 | 684 | new_rate = rockchip_mmc_get_clk(priv->cru, gclk_rate, clk->id); |
4f43673e SG |
685 | break; |
686 | case SCLK_SPI0: | |
687 | case SCLK_SPI1: | |
688 | case SCLK_SPI2: | |
135aa950 | 689 | new_rate = rockchip_spi_get_clk(priv->cru, gclk_rate, clk->id); |
4f43673e SG |
690 | break; |
691 | case PCLK_I2C0: | |
692 | case PCLK_I2C1: | |
693 | case PCLK_I2C2: | |
694 | case PCLK_I2C3: | |
695 | case PCLK_I2C4: | |
696 | case PCLK_I2C5: | |
697 | return gclk_rate; | |
4f0b8efa KY |
698 | case PCLK_PWM: |
699 | return PD_BUS_PCLK_HZ; | |
4f43673e SG |
700 | default: |
701 | return -ENOENT; | |
702 | } | |
703 | ||
704 | return new_rate; | |
705 | } | |
706 | ||
135aa950 | 707 | static ulong rk3288_clk_set_rate(struct clk *clk, ulong rate) |
99c15650 | 708 | { |
135aa950 | 709 | struct rk3288_clk_priv *priv = dev_get_priv(clk->dev); |
830a6081 | 710 | struct rk3288_cru *cru = priv->cru; |
898d6439 | 711 | ulong new_rate, gclk_rate; |
898d6439 | 712 | |
135aa950 SW |
713 | gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL); |
714 | switch (clk->id) { | |
715 | case CLK_DDR: | |
716 | new_rate = rkclk_configure_ddr(priv->cru, priv->grf, rate); | |
717 | break; | |
898d6439 SG |
718 | case HCLK_EMMC: |
719 | case HCLK_SDMMC: | |
720 | case HCLK_SDIO0: | |
135aa950 | 721 | new_rate = rockchip_mmc_set_clk(cru, gclk_rate, clk->id, rate); |
99c15650 | 722 | break; |
898d6439 SG |
723 | case SCLK_SPI0: |
724 | case SCLK_SPI1: | |
725 | case SCLK_SPI2: | |
135aa950 | 726 | new_rate = rockchip_spi_set_clk(cru, gclk_rate, clk->id, rate); |
99c15650 | 727 | break; |
830a6081 | 728 | #ifndef CONFIG_SPL_BUILD |
0aefc0b0 | 729 | case SCLK_MAC: |
135aa950 | 730 | new_rate = rockchip_mac_set_clk(priv->cru, clk->id, rate); |
0aefc0b0 | 731 | break; |
830a6081 SG |
732 | case DCLK_VOP0: |
733 | case DCLK_VOP1: | |
135aa950 | 734 | new_rate = rockchip_vop_set_clk(cru, priv->grf, clk->id, rate); |
830a6081 SG |
735 | break; |
736 | case SCLK_EDP_24M: | |
737 | /* clk_edp_24M source: 24M */ | |
738 | rk_setreg(&cru->cru_clksel_con[28], 1 << 15); | |
739 | ||
740 | /* rst edp */ | |
741 | rk_setreg(&cru->cru_clksel_con[6], 1 << 15); | |
742 | udelay(1); | |
743 | rk_clrreg(&cru->cru_clksel_con[6], 1 << 15); | |
744 | new_rate = rate; | |
745 | break; | |
746 | case ACLK_VOP0: | |
747 | case ACLK_VOP1: { | |
748 | u32 div; | |
749 | ||
750 | /* vop aclk source clk: cpll */ | |
751 | div = CPLL_HZ / rate; | |
752 | assert((div - 1 < 64) && (div * rate == CPLL_HZ)); | |
753 | ||
135aa950 | 754 | switch (clk->id) { |
830a6081 SG |
755 | case ACLK_VOP0: |
756 | rk_clrsetreg(&cru->cru_clksel_con[31], | |
757 | 3 << 6 | 0x1f << 0, | |
758 | 0 << 6 | (div - 1) << 0); | |
759 | break; | |
760 | case ACLK_VOP1: | |
761 | rk_clrsetreg(&cru->cru_clksel_con[31], | |
762 | 3 << 14 | 0x1f << 8, | |
763 | 0 << 14 | (div - 1) << 8); | |
764 | break; | |
765 | } | |
766 | new_rate = rate; | |
767 | break; | |
768 | } | |
769 | case PCLK_HDMI_CTRL: | |
770 | /* enable pclk hdmi ctrl */ | |
771 | rk_clrreg(&cru->cru_clkgate_con[16], 1 << 9); | |
772 | ||
773 | /* software reset hdmi */ | |
774 | rk_setreg(&cru->cru_clkgate_con[7], 1 << 9); | |
775 | udelay(1); | |
776 | rk_clrreg(&cru->cru_clkgate_con[7], 1 << 9); | |
777 | new_rate = rate; | |
778 | break; | |
779 | #endif | |
99c15650 SG |
780 | default: |
781 | return -ENOENT; | |
782 | } | |
783 | ||
784 | return new_rate; | |
785 | } | |
786 | ||
787 | static struct clk_ops rk3288_clk_ops = { | |
788 | .get_rate = rk3288_clk_get_rate, | |
789 | .set_rate = rk3288_clk_set_rate, | |
99c15650 SG |
790 | }; |
791 | ||
08fd82cf | 792 | static int rk3288_clk_ofdata_to_platdata(struct udevice *dev) |
99c15650 | 793 | { |
2d143bd6 | 794 | #if !CONFIG_IS_ENABLED(OF_PLATDATA) |
99c15650 SG |
795 | struct rk3288_clk_priv *priv = dev_get_priv(dev); |
796 | ||
99c15650 | 797 | priv->cru = (struct rk3288_cru *)dev_get_addr(dev); |
2d143bd6 | 798 | #endif |
08fd82cf SG |
799 | |
800 | return 0; | |
801 | } | |
802 | ||
803 | static int rk3288_clk_probe(struct udevice *dev) | |
804 | { | |
805 | struct rk3288_clk_priv *priv = dev_get_priv(dev); | |
806 | ||
99c15650 | 807 | priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); |
08fd82cf SG |
808 | if (IS_ERR(priv->grf)) |
809 | return PTR_ERR(priv->grf); | |
99c15650 | 810 | #ifdef CONFIG_SPL_BUILD |
2d143bd6 SG |
811 | #if CONFIG_IS_ENABLED(OF_PLATDATA) |
812 | struct rk3288_clk_plat *plat = dev_get_platdata(dev); | |
813 | ||
814 | priv->cru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]); | |
815 | #endif | |
99c15650 SG |
816 | rkclk_init(priv->cru, priv->grf); |
817 | #endif | |
818 | ||
819 | return 0; | |
820 | } | |
821 | ||
99c15650 SG |
822 | static int rk3288_clk_bind(struct udevice *dev) |
823 | { | |
135aa950 | 824 | int ret; |
99c15650 SG |
825 | |
826 | /* The reset driver does not have a device node, so bind it here */ | |
11636258 | 827 | ret = device_bind_driver(gd->dm_root, "rk3288_sysreset", "reset", &dev); |
99c15650 SG |
828 | if (ret) |
829 | debug("Warning: No RK3288 reset driver: ret=%d\n", ret); | |
830 | ||
831 | return 0; | |
832 | } | |
833 | ||
834 | static const struct udevice_id rk3288_clk_ids[] = { | |
835 | { .compatible = "rockchip,rk3288-cru" }, | |
836 | { } | |
837 | }; | |
838 | ||
2d143bd6 SG |
839 | U_BOOT_DRIVER(rockchip_rk3288_cru) = { |
840 | .name = "rockchip_rk3288_cru", | |
99c15650 SG |
841 | .id = UCLASS_CLK, |
842 | .of_match = rk3288_clk_ids, | |
843 | .priv_auto_alloc_size = sizeof(struct rk3288_clk_priv), | |
2d143bd6 | 844 | .platdata_auto_alloc_size = sizeof(struct rk3288_clk_plat), |
99c15650 SG |
845 | .ops = &rk3288_clk_ops, |
846 | .bind = rk3288_clk_bind, | |
08fd82cf | 847 | .ofdata_to_platdata = rk3288_clk_ofdata_to_platdata, |
99c15650 SG |
848 | .probe = rk3288_clk_probe, |
849 | }; |