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1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * (C) Copyright 2015 Google, Inc
4  * (C) 2017 Theobroma Systems Design und Consulting GmbH
5  */
6 
7 #include <common.h>
8 #include <clk-uclass.h>
9 #include <dm.h>
10 #include <dt-structs.h>
11 #include <errno.h>
12 #include <mapmem.h>
13 #include <syscon.h>
14 #include <bitfield.h>
15 #include <asm/io.h>
16 #include <asm/arch-rockchip/clock.h>
17 #include <asm/arch-rockchip/cru_rk3399.h>
18 #include <asm/arch-rockchip/hardware.h>
19 #include <dm/lists.h>
20 #include <dt-bindings/clock/rk3399-cru.h>
21 
22 #if CONFIG_IS_ENABLED(OF_PLATDATA)
23 struct rk3399_clk_plat {
24 	struct dtd_rockchip_rk3399_cru dtd;
25 };
26 
27 struct rk3399_pmuclk_plat {
28 	struct dtd_rockchip_rk3399_pmucru dtd;
29 };
30 #endif
31 
32 struct pll_div {
33 	u32 refdiv;
34 	u32 fbdiv;
35 	u32 postdiv1;
36 	u32 postdiv2;
37 	u32 frac;
38 };
39 
40 #define RATE_TO_DIV(input_rate, output_rate) \
41 	((input_rate) / (output_rate) - 1)
42 #define DIV_TO_RATE(input_rate, div)		((input_rate) / ((div) + 1))
43 
44 #define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
45 	.refdiv = _refdiv,\
46 	.fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\
47 	.postdiv1 = _postdiv1, .postdiv2 = _postdiv2};
48 
49 #if defined(CONFIG_SPL_BUILD)
50 static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
51 static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2, 2);
52 #else
53 static const struct pll_div ppll_init_cfg = PLL_DIVISORS(PPLL_HZ, 2, 2, 1);
54 #endif
55 
56 static const struct pll_div apll_l_1600_cfg = PLL_DIVISORS(1600 * MHz, 3, 1, 1);
57 static const struct pll_div apll_l_600_cfg = PLL_DIVISORS(600 * MHz, 1, 2, 1);
58 
59 static const struct pll_div *apll_l_cfgs[] = {
60 	[APLL_L_1600_MHZ] = &apll_l_1600_cfg,
61 	[APLL_L_600_MHZ] = &apll_l_600_cfg,
62 };
63 
64 static const struct pll_div apll_b_600_cfg = PLL_DIVISORS(600 * MHz, 1, 2, 1);
65 static const struct pll_div *apll_b_cfgs[] = {
66 	[APLL_B_600_MHZ] = &apll_b_600_cfg,
67 };
68 
69 enum {
70 	/* PLL_CON0 */
71 	PLL_FBDIV_MASK			= 0xfff,
72 	PLL_FBDIV_SHIFT			= 0,
73 
74 	/* PLL_CON1 */
75 	PLL_POSTDIV2_SHIFT		= 12,
76 	PLL_POSTDIV2_MASK		= 0x7 << PLL_POSTDIV2_SHIFT,
77 	PLL_POSTDIV1_SHIFT		= 8,
78 	PLL_POSTDIV1_MASK		= 0x7 << PLL_POSTDIV1_SHIFT,
79 	PLL_REFDIV_MASK			= 0x3f,
80 	PLL_REFDIV_SHIFT		= 0,
81 
82 	/* PLL_CON2 */
83 	PLL_LOCK_STATUS_SHIFT		= 31,
84 	PLL_LOCK_STATUS_MASK		= 1 << PLL_LOCK_STATUS_SHIFT,
85 	PLL_FRACDIV_MASK		= 0xffffff,
86 	PLL_FRACDIV_SHIFT		= 0,
87 
88 	/* PLL_CON3 */
89 	PLL_MODE_SHIFT			= 8,
90 	PLL_MODE_MASK			= 3 << PLL_MODE_SHIFT,
91 	PLL_MODE_SLOW			= 0,
92 	PLL_MODE_NORM,
93 	PLL_MODE_DEEP,
94 	PLL_DSMPD_SHIFT			= 3,
95 	PLL_DSMPD_MASK			= 1 << PLL_DSMPD_SHIFT,
96 	PLL_INTEGER_MODE		= 1,
97 
98 	/* PMUCRU_CLKSEL_CON0 */
99 	PMU_PCLK_DIV_CON_MASK		= 0x1f,
100 	PMU_PCLK_DIV_CON_SHIFT		= 0,
101 
102 	/* PMUCRU_CLKSEL_CON1 */
103 	SPI3_PLL_SEL_SHIFT		= 7,
104 	SPI3_PLL_SEL_MASK		= 1 << SPI3_PLL_SEL_SHIFT,
105 	SPI3_PLL_SEL_24M		= 0,
106 	SPI3_PLL_SEL_PPLL		= 1,
107 	SPI3_DIV_CON_SHIFT		= 0x0,
108 	SPI3_DIV_CON_MASK		= 0x7f,
109 
110 	/* PMUCRU_CLKSEL_CON2 */
111 	I2C_DIV_CON_MASK		= 0x7f,
112 	CLK_I2C8_DIV_CON_SHIFT		= 8,
113 	CLK_I2C0_DIV_CON_SHIFT		= 0,
114 
115 	/* PMUCRU_CLKSEL_CON3 */
116 	CLK_I2C4_DIV_CON_SHIFT		= 0,
117 
118 	/* CLKSEL_CON0 */
119 	ACLKM_CORE_L_DIV_CON_SHIFT	= 8,
120 	ACLKM_CORE_L_DIV_CON_MASK	= 0x1f << ACLKM_CORE_L_DIV_CON_SHIFT,
121 	CLK_CORE_L_PLL_SEL_SHIFT	= 6,
122 	CLK_CORE_L_PLL_SEL_MASK		= 3 << CLK_CORE_L_PLL_SEL_SHIFT,
123 	CLK_CORE_L_PLL_SEL_ALPLL	= 0x0,
124 	CLK_CORE_L_PLL_SEL_ABPLL	= 0x1,
125 	CLK_CORE_L_PLL_SEL_DPLL		= 0x10,
126 	CLK_CORE_L_PLL_SEL_GPLL		= 0x11,
127 	CLK_CORE_L_DIV_MASK		= 0x1f,
128 	CLK_CORE_L_DIV_SHIFT		= 0,
129 
130 	/* CLKSEL_CON1 */
131 	PCLK_DBG_L_DIV_SHIFT		= 0x8,
132 	PCLK_DBG_L_DIV_MASK		= 0x1f << PCLK_DBG_L_DIV_SHIFT,
133 	ATCLK_CORE_L_DIV_SHIFT		= 0,
134 	ATCLK_CORE_L_DIV_MASK		= 0x1f << ATCLK_CORE_L_DIV_SHIFT,
135 
136 	/* CLKSEL_CON2 */
137 	ACLKM_CORE_B_DIV_CON_SHIFT	= 8,
138 	ACLKM_CORE_B_DIV_CON_MASK	= 0x1f << ACLKM_CORE_B_DIV_CON_SHIFT,
139 	CLK_CORE_B_PLL_SEL_SHIFT	= 6,
140 	CLK_CORE_B_PLL_SEL_MASK		= 3 << CLK_CORE_B_PLL_SEL_SHIFT,
141 	CLK_CORE_B_PLL_SEL_ALPLL	= 0x0,
142 	CLK_CORE_B_PLL_SEL_ABPLL	= 0x1,
143 	CLK_CORE_B_PLL_SEL_DPLL		= 0x10,
144 	CLK_CORE_B_PLL_SEL_GPLL		= 0x11,
145 	CLK_CORE_B_DIV_MASK		= 0x1f,
146 	CLK_CORE_B_DIV_SHIFT		= 0,
147 
148 	/* CLKSEL_CON3 */
149 	PCLK_DBG_B_DIV_SHIFT		= 0x8,
150 	PCLK_DBG_B_DIV_MASK		= 0x1f << PCLK_DBG_B_DIV_SHIFT,
151 	ATCLK_CORE_B_DIV_SHIFT		= 0,
152 	ATCLK_CORE_B_DIV_MASK		= 0x1f << ATCLK_CORE_B_DIV_SHIFT,
153 
154 	/* CLKSEL_CON14 */
155 	PCLK_PERIHP_DIV_CON_SHIFT	= 12,
156 	PCLK_PERIHP_DIV_CON_MASK	= 0x7 << PCLK_PERIHP_DIV_CON_SHIFT,
157 	HCLK_PERIHP_DIV_CON_SHIFT	= 8,
158 	HCLK_PERIHP_DIV_CON_MASK	= 3 << HCLK_PERIHP_DIV_CON_SHIFT,
159 	ACLK_PERIHP_PLL_SEL_SHIFT	= 7,
160 	ACLK_PERIHP_PLL_SEL_MASK	= 1 << ACLK_PERIHP_PLL_SEL_SHIFT,
161 	ACLK_PERIHP_PLL_SEL_CPLL	= 0,
162 	ACLK_PERIHP_PLL_SEL_GPLL	= 1,
163 	ACLK_PERIHP_DIV_CON_SHIFT	= 0,
164 	ACLK_PERIHP_DIV_CON_MASK	= 0x1f,
165 
166 	/* CLKSEL_CON21 */
167 	ACLK_EMMC_PLL_SEL_SHIFT         = 7,
168 	ACLK_EMMC_PLL_SEL_MASK          = 0x1 << ACLK_EMMC_PLL_SEL_SHIFT,
169 	ACLK_EMMC_PLL_SEL_GPLL          = 0x1,
170 	ACLK_EMMC_DIV_CON_SHIFT         = 0,
171 	ACLK_EMMC_DIV_CON_MASK          = 0x1f,
172 
173 	/* CLKSEL_CON22 */
174 	CLK_EMMC_PLL_SHIFT              = 8,
175 	CLK_EMMC_PLL_MASK               = 0x7 << CLK_EMMC_PLL_SHIFT,
176 	CLK_EMMC_PLL_SEL_GPLL           = 0x1,
177 	CLK_EMMC_PLL_SEL_24M            = 0x5,
178 	CLK_EMMC_DIV_CON_SHIFT          = 0,
179 	CLK_EMMC_DIV_CON_MASK           = 0x7f << CLK_EMMC_DIV_CON_SHIFT,
180 
181 	/* CLKSEL_CON23 */
182 	PCLK_PERILP0_DIV_CON_SHIFT	= 12,
183 	PCLK_PERILP0_DIV_CON_MASK	= 0x7 << PCLK_PERILP0_DIV_CON_SHIFT,
184 	HCLK_PERILP0_DIV_CON_SHIFT	= 8,
185 	HCLK_PERILP0_DIV_CON_MASK	= 3 << HCLK_PERILP0_DIV_CON_SHIFT,
186 	ACLK_PERILP0_PLL_SEL_SHIFT	= 7,
187 	ACLK_PERILP0_PLL_SEL_MASK	= 1 << ACLK_PERILP0_PLL_SEL_SHIFT,
188 	ACLK_PERILP0_PLL_SEL_CPLL	= 0,
189 	ACLK_PERILP0_PLL_SEL_GPLL	= 1,
190 	ACLK_PERILP0_DIV_CON_SHIFT	= 0,
191 	ACLK_PERILP0_DIV_CON_MASK	= 0x1f,
192 
193 	/* CLKSEL_CON25 */
194 	PCLK_PERILP1_DIV_CON_SHIFT	= 8,
195 	PCLK_PERILP1_DIV_CON_MASK	= 0x7 << PCLK_PERILP1_DIV_CON_SHIFT,
196 	HCLK_PERILP1_PLL_SEL_SHIFT	= 7,
197 	HCLK_PERILP1_PLL_SEL_MASK	= 1 << HCLK_PERILP1_PLL_SEL_SHIFT,
198 	HCLK_PERILP1_PLL_SEL_CPLL	= 0,
199 	HCLK_PERILP1_PLL_SEL_GPLL	= 1,
200 	HCLK_PERILP1_DIV_CON_SHIFT	= 0,
201 	HCLK_PERILP1_DIV_CON_MASK	= 0x1f,
202 
203 	/* CLKSEL_CON26 */
204 	CLK_SARADC_DIV_CON_SHIFT	= 8,
205 	CLK_SARADC_DIV_CON_MASK		= GENMASK(15, 8),
206 	CLK_SARADC_DIV_CON_WIDTH	= 8,
207 
208 	/* CLKSEL_CON27 */
209 	CLK_TSADC_SEL_X24M		= 0x0,
210 	CLK_TSADC_SEL_SHIFT		= 15,
211 	CLK_TSADC_SEL_MASK		= 1 << CLK_TSADC_SEL_SHIFT,
212 	CLK_TSADC_DIV_CON_SHIFT		= 0,
213 	CLK_TSADC_DIV_CON_MASK		= 0x3ff,
214 
215 	/* CLKSEL_CON47 & CLKSEL_CON48 */
216 	ACLK_VOP_PLL_SEL_SHIFT		= 6,
217 	ACLK_VOP_PLL_SEL_MASK		= 0x3 << ACLK_VOP_PLL_SEL_SHIFT,
218 	ACLK_VOP_PLL_SEL_CPLL		= 0x1,
219 	ACLK_VOP_DIV_CON_SHIFT		= 0,
220 	ACLK_VOP_DIV_CON_MASK		= 0x1f << ACLK_VOP_DIV_CON_SHIFT,
221 
222 	/* CLKSEL_CON49 & CLKSEL_CON50 */
223 	DCLK_VOP_DCLK_SEL_SHIFT         = 11,
224 	DCLK_VOP_DCLK_SEL_MASK          = 1 << DCLK_VOP_DCLK_SEL_SHIFT,
225 	DCLK_VOP_DCLK_SEL_DIVOUT        = 0,
226 	DCLK_VOP_PLL_SEL_SHIFT          = 8,
227 	DCLK_VOP_PLL_SEL_MASK           = 3 << DCLK_VOP_PLL_SEL_SHIFT,
228 	DCLK_VOP_PLL_SEL_VPLL           = 0,
229 	DCLK_VOP_DIV_CON_MASK           = 0xff,
230 	DCLK_VOP_DIV_CON_SHIFT          = 0,
231 
232 	/* CLKSEL_CON58 */
233 	CLK_SPI_PLL_SEL_WIDTH = 1,
234 	CLK_SPI_PLL_SEL_MASK = ((1 < CLK_SPI_PLL_SEL_WIDTH) - 1),
235 	CLK_SPI_PLL_SEL_CPLL = 0,
236 	CLK_SPI_PLL_SEL_GPLL = 1,
237 	CLK_SPI_PLL_DIV_CON_WIDTH = 7,
238 	CLK_SPI_PLL_DIV_CON_MASK = ((1 << CLK_SPI_PLL_DIV_CON_WIDTH) - 1),
239 
240 	CLK_SPI5_PLL_DIV_CON_SHIFT      = 8,
241 	CLK_SPI5_PLL_SEL_SHIFT	        = 15,
242 
243 	/* CLKSEL_CON59 */
244 	CLK_SPI1_PLL_SEL_SHIFT		= 15,
245 	CLK_SPI1_PLL_DIV_CON_SHIFT	= 8,
246 	CLK_SPI0_PLL_SEL_SHIFT		= 7,
247 	CLK_SPI0_PLL_DIV_CON_SHIFT	= 0,
248 
249 	/* CLKSEL_CON60 */
250 	CLK_SPI4_PLL_SEL_SHIFT		= 15,
251 	CLK_SPI4_PLL_DIV_CON_SHIFT	= 8,
252 	CLK_SPI2_PLL_SEL_SHIFT		= 7,
253 	CLK_SPI2_PLL_DIV_CON_SHIFT	= 0,
254 
255 	/* CLKSEL_CON61 */
256 	CLK_I2C_PLL_SEL_MASK		= 1,
257 	CLK_I2C_PLL_SEL_CPLL		= 0,
258 	CLK_I2C_PLL_SEL_GPLL		= 1,
259 	CLK_I2C5_PLL_SEL_SHIFT		= 15,
260 	CLK_I2C5_DIV_CON_SHIFT		= 8,
261 	CLK_I2C1_PLL_SEL_SHIFT		= 7,
262 	CLK_I2C1_DIV_CON_SHIFT		= 0,
263 
264 	/* CLKSEL_CON62 */
265 	CLK_I2C6_PLL_SEL_SHIFT		= 15,
266 	CLK_I2C6_DIV_CON_SHIFT		= 8,
267 	CLK_I2C2_PLL_SEL_SHIFT		= 7,
268 	CLK_I2C2_DIV_CON_SHIFT		= 0,
269 
270 	/* CLKSEL_CON63 */
271 	CLK_I2C7_PLL_SEL_SHIFT		= 15,
272 	CLK_I2C7_DIV_CON_SHIFT		= 8,
273 	CLK_I2C3_PLL_SEL_SHIFT		= 7,
274 	CLK_I2C3_DIV_CON_SHIFT		= 0,
275 
276 	/* CRU_SOFTRST_CON4 */
277 	RESETN_DDR0_REQ_SHIFT		= 8,
278 	RESETN_DDR0_REQ_MASK		= 1 << RESETN_DDR0_REQ_SHIFT,
279 	RESETN_DDRPHY0_REQ_SHIFT	= 9,
280 	RESETN_DDRPHY0_REQ_MASK		= 1 << RESETN_DDRPHY0_REQ_SHIFT,
281 	RESETN_DDR1_REQ_SHIFT		= 12,
282 	RESETN_DDR1_REQ_MASK		= 1 << RESETN_DDR1_REQ_SHIFT,
283 	RESETN_DDRPHY1_REQ_SHIFT	= 13,
284 	RESETN_DDRPHY1_REQ_MASK		= 1 << RESETN_DDRPHY1_REQ_SHIFT,
285 };
286 
287 #define VCO_MAX_KHZ	(3200 * (MHz / KHz))
288 #define VCO_MIN_KHZ	(800 * (MHz / KHz))
289 #define OUTPUT_MAX_KHZ	(3200 * (MHz / KHz))
290 #define OUTPUT_MIN_KHZ	(16 * (MHz / KHz))
291 
292 /*
293  *  the div restructions of pll in integer mode, these are defined in
294  *  * CRU_*PLL_CON0 or PMUCRU_*PLL_CON0
295  */
296 #define PLL_DIV_MIN	16
297 #define PLL_DIV_MAX	3200
298 
299 /*
300  * How to calculate the PLL(from TRM V0.3 Part 1 Page 63):
301  * Formulas also embedded within the Fractional PLL Verilog model:
302  * If DSMPD = 1 (DSM is disabled, "integer mode")
303  * FOUTVCO = FREF / REFDIV * FBDIV
304  * FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2
305  * Where:
306  * FOUTVCO = Fractional PLL non-divided output frequency
307  * FOUTPOSTDIV = Fractional PLL divided output frequency
308  *               (output of second post divider)
309  * FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input)
310  * REFDIV = Fractional PLL input reference clock divider
311  * FBDIV = Integer value programmed into feedback divide
312  *
313  */
rkclk_set_pll(u32 * pll_con,const struct pll_div * div)314 static void rkclk_set_pll(u32 *pll_con, const struct pll_div *div)
315 {
316 	/* All 8 PLLs have same VCO and output frequency range restrictions. */
317 	u32 vco_khz = OSC_HZ / 1000 * div->fbdiv / div->refdiv;
318 	u32 output_khz = vco_khz / div->postdiv1 / div->postdiv2;
319 
320 	debug("PLL at %p: fbdiv=%d, refdiv=%d, postdiv1=%d, "
321 			   "postdiv2=%d, vco=%u khz, output=%u khz\n",
322 			   pll_con, div->fbdiv, div->refdiv, div->postdiv1,
323 			   div->postdiv2, vco_khz, output_khz);
324 	assert(vco_khz >= VCO_MIN_KHZ && vco_khz <= VCO_MAX_KHZ &&
325 	       output_khz >= OUTPUT_MIN_KHZ && output_khz <= OUTPUT_MAX_KHZ &&
326 	       div->fbdiv >= PLL_DIV_MIN && div->fbdiv <= PLL_DIV_MAX);
327 
328 	/*
329 	 * When power on or changing PLL setting,
330 	 * we must force PLL into slow mode to ensure output stable clock.
331 	 */
332 	rk_clrsetreg(&pll_con[3], PLL_MODE_MASK,
333 		     PLL_MODE_SLOW << PLL_MODE_SHIFT);
334 
335 	/* use integer mode */
336 	rk_clrsetreg(&pll_con[3], PLL_DSMPD_MASK,
337 		     PLL_INTEGER_MODE << PLL_DSMPD_SHIFT);
338 
339 	rk_clrsetreg(&pll_con[0], PLL_FBDIV_MASK,
340 		     div->fbdiv << PLL_FBDIV_SHIFT);
341 	rk_clrsetreg(&pll_con[1],
342 		     PLL_POSTDIV2_MASK | PLL_POSTDIV1_MASK |
343 		     PLL_REFDIV_MASK | PLL_REFDIV_SHIFT,
344 		     (div->postdiv2 << PLL_POSTDIV2_SHIFT) |
345 		     (div->postdiv1 << PLL_POSTDIV1_SHIFT) |
346 		     (div->refdiv << PLL_REFDIV_SHIFT));
347 
348 	/* waiting for pll lock */
349 	while (!(readl(&pll_con[2]) & (1 << PLL_LOCK_STATUS_SHIFT)))
350 		udelay(1);
351 
352 	/* pll enter normal mode */
353 	rk_clrsetreg(&pll_con[3], PLL_MODE_MASK,
354 		     PLL_MODE_NORM << PLL_MODE_SHIFT);
355 }
356 
pll_para_config(u32 freq_hz,struct pll_div * div)357 static int pll_para_config(u32 freq_hz, struct pll_div *div)
358 {
359 	u32 ref_khz = OSC_HZ / KHz, refdiv, fbdiv = 0;
360 	u32 postdiv1, postdiv2 = 1;
361 	u32 fref_khz;
362 	u32 diff_khz, best_diff_khz;
363 	const u32 max_refdiv = 63, max_fbdiv = 3200, min_fbdiv = 16;
364 	const u32 max_postdiv1 = 7, max_postdiv2 = 7;
365 	u32 vco_khz;
366 	u32 freq_khz = freq_hz / KHz;
367 
368 	if (!freq_hz) {
369 		printf("%s: the frequency can't be 0 Hz\n", __func__);
370 		return -1;
371 	}
372 
373 	postdiv1 = DIV_ROUND_UP(VCO_MIN_KHZ, freq_khz);
374 	if (postdiv1 > max_postdiv1) {
375 		postdiv2 = DIV_ROUND_UP(postdiv1, max_postdiv1);
376 		postdiv1 = DIV_ROUND_UP(postdiv1, postdiv2);
377 	}
378 
379 	vco_khz = freq_khz * postdiv1 * postdiv2;
380 
381 	if (vco_khz < VCO_MIN_KHZ || vco_khz > VCO_MAX_KHZ ||
382 	    postdiv2 > max_postdiv2) {
383 		printf("%s: Cannot find out a supported VCO"
384 		       " for Frequency (%uHz).\n", __func__, freq_hz);
385 		return -1;
386 	}
387 
388 	div->postdiv1 = postdiv1;
389 	div->postdiv2 = postdiv2;
390 
391 	best_diff_khz = vco_khz;
392 	for (refdiv = 1; refdiv < max_refdiv && best_diff_khz; refdiv++) {
393 		fref_khz = ref_khz / refdiv;
394 
395 		fbdiv = vco_khz / fref_khz;
396 		if (fbdiv >= max_fbdiv || fbdiv <= min_fbdiv)
397 			continue;
398 		diff_khz = vco_khz - fbdiv * fref_khz;
399 		if (fbdiv + 1 < max_fbdiv && diff_khz > fref_khz / 2) {
400 			fbdiv++;
401 			diff_khz = fref_khz - diff_khz;
402 		}
403 
404 		if (diff_khz >= best_diff_khz)
405 			continue;
406 
407 		best_diff_khz = diff_khz;
408 		div->refdiv = refdiv;
409 		div->fbdiv = fbdiv;
410 	}
411 
412 	if (best_diff_khz > 4 * (MHz / KHz)) {
413 		printf("%s: Failed to match output frequency %u, "
414 		       "difference is %u Hz,exceed 4MHZ\n", __func__, freq_hz,
415 		       best_diff_khz * KHz);
416 		return -1;
417 	}
418 	return 0;
419 }
420 
rk3399_configure_cpu_l(struct rk3399_cru * cru,enum apll_l_frequencies apll_l_freq)421 void rk3399_configure_cpu_l(struct rk3399_cru *cru,
422 			    enum apll_l_frequencies apll_l_freq)
423 {
424 	u32 aclkm_div;
425 	u32 pclk_dbg_div;
426 	u32 atclk_div;
427 
428 	/* Setup cluster L */
429 	rkclk_set_pll(&cru->apll_l_con[0], apll_l_cfgs[apll_l_freq]);
430 
431 	aclkm_div = LPLL_HZ / ACLKM_CORE_L_HZ - 1;
432 	assert((aclkm_div + 1) * ACLKM_CORE_L_HZ == LPLL_HZ &&
433 	       aclkm_div < 0x1f);
434 
435 	pclk_dbg_div = LPLL_HZ / PCLK_DBG_L_HZ - 1;
436 	assert((pclk_dbg_div + 1) * PCLK_DBG_L_HZ == LPLL_HZ &&
437 	       pclk_dbg_div < 0x1f);
438 
439 	atclk_div = LPLL_HZ / ATCLK_CORE_L_HZ - 1;
440 	assert((atclk_div + 1) * ATCLK_CORE_L_HZ == LPLL_HZ &&
441 	       atclk_div < 0x1f);
442 
443 	rk_clrsetreg(&cru->clksel_con[0],
444 		     ACLKM_CORE_L_DIV_CON_MASK | CLK_CORE_L_PLL_SEL_MASK |
445 		     CLK_CORE_L_DIV_MASK,
446 		     aclkm_div << ACLKM_CORE_L_DIV_CON_SHIFT |
447 		     CLK_CORE_L_PLL_SEL_ALPLL << CLK_CORE_L_PLL_SEL_SHIFT |
448 		     0 << CLK_CORE_L_DIV_SHIFT);
449 
450 	rk_clrsetreg(&cru->clksel_con[1],
451 		     PCLK_DBG_L_DIV_MASK | ATCLK_CORE_L_DIV_MASK,
452 		     pclk_dbg_div << PCLK_DBG_L_DIV_SHIFT |
453 		     atclk_div << ATCLK_CORE_L_DIV_SHIFT);
454 }
455 
rk3399_configure_cpu_b(struct rk3399_cru * cru,enum apll_b_frequencies apll_b_freq)456 void rk3399_configure_cpu_b(struct rk3399_cru *cru,
457 			    enum apll_b_frequencies apll_b_freq)
458 {
459 	u32 aclkm_div;
460 	u32 pclk_dbg_div;
461 	u32 atclk_div;
462 
463 	/* Setup cluster B */
464 	rkclk_set_pll(&cru->apll_b_con[0], apll_b_cfgs[apll_b_freq]);
465 
466 	aclkm_div = BPLL_HZ / ACLKM_CORE_B_HZ - 1;
467 	assert((aclkm_div + 1) * ACLKM_CORE_B_HZ == BPLL_HZ &&
468 	       aclkm_div < 0x1f);
469 
470 	pclk_dbg_div = BPLL_HZ / PCLK_DBG_B_HZ - 1;
471 	assert((pclk_dbg_div + 1) * PCLK_DBG_B_HZ == BPLL_HZ &&
472 	       pclk_dbg_div < 0x1f);
473 
474 	atclk_div = BPLL_HZ / ATCLK_CORE_B_HZ - 1;
475 	assert((atclk_div + 1) * ATCLK_CORE_B_HZ == BPLL_HZ &&
476 	       atclk_div < 0x1f);
477 
478 	rk_clrsetreg(&cru->clksel_con[2],
479 		     ACLKM_CORE_B_DIV_CON_MASK | CLK_CORE_B_PLL_SEL_MASK |
480 		     CLK_CORE_B_DIV_MASK,
481 		     aclkm_div << ACLKM_CORE_B_DIV_CON_SHIFT |
482 		     CLK_CORE_B_PLL_SEL_ABPLL << CLK_CORE_B_PLL_SEL_SHIFT |
483 		     0 << CLK_CORE_B_DIV_SHIFT);
484 
485 	rk_clrsetreg(&cru->clksel_con[3],
486 		     PCLK_DBG_B_DIV_MASK | ATCLK_CORE_B_DIV_MASK,
487 		     pclk_dbg_div << PCLK_DBG_B_DIV_SHIFT |
488 		     atclk_div << ATCLK_CORE_B_DIV_SHIFT);
489 }
490 
491 #define I2C_CLK_REG_MASK(bus) \
492 	(I2C_DIV_CON_MASK << CLK_I2C ##bus## _DIV_CON_SHIFT | \
493 	 CLK_I2C_PLL_SEL_MASK << CLK_I2C ##bus## _PLL_SEL_SHIFT)
494 
495 #define I2C_CLK_REG_VALUE(bus, clk_div) \
496 	((clk_div - 1) << CLK_I2C ##bus## _DIV_CON_SHIFT | \
497 	 CLK_I2C_PLL_SEL_GPLL << CLK_I2C ##bus## _PLL_SEL_SHIFT)
498 
499 #define I2C_CLK_DIV_VALUE(con, bus) \
500 	((con >> CLK_I2C ##bus## _DIV_CON_SHIFT) & I2C_DIV_CON_MASK)
501 
502 #define I2C_PMUCLK_REG_MASK(bus) \
503 	(I2C_DIV_CON_MASK << CLK_I2C ##bus## _DIV_CON_SHIFT)
504 
505 #define I2C_PMUCLK_REG_VALUE(bus, clk_div) \
506 	((clk_div - 1) << CLK_I2C ##bus## _DIV_CON_SHIFT)
507 
rk3399_i2c_get_clk(struct rk3399_cru * cru,ulong clk_id)508 static ulong rk3399_i2c_get_clk(struct rk3399_cru *cru, ulong clk_id)
509 {
510 	u32 div, con;
511 
512 	switch (clk_id) {
513 	case SCLK_I2C1:
514 		con = readl(&cru->clksel_con[61]);
515 		div = I2C_CLK_DIV_VALUE(con, 1);
516 		break;
517 	case SCLK_I2C2:
518 		con = readl(&cru->clksel_con[62]);
519 		div = I2C_CLK_DIV_VALUE(con, 2);
520 		break;
521 	case SCLK_I2C3:
522 		con = readl(&cru->clksel_con[63]);
523 		div = I2C_CLK_DIV_VALUE(con, 3);
524 		break;
525 	case SCLK_I2C5:
526 		con = readl(&cru->clksel_con[61]);
527 		div = I2C_CLK_DIV_VALUE(con, 5);
528 		break;
529 	case SCLK_I2C6:
530 		con = readl(&cru->clksel_con[62]);
531 		div = I2C_CLK_DIV_VALUE(con, 6);
532 		break;
533 	case SCLK_I2C7:
534 		con = readl(&cru->clksel_con[63]);
535 		div = I2C_CLK_DIV_VALUE(con, 7);
536 		break;
537 	default:
538 		printf("do not support this i2c bus\n");
539 		return -EINVAL;
540 	}
541 
542 	return DIV_TO_RATE(GPLL_HZ, div);
543 }
544 
rk3399_i2c_set_clk(struct rk3399_cru * cru,ulong clk_id,uint hz)545 static ulong rk3399_i2c_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz)
546 {
547 	int src_clk_div;
548 
549 	/* i2c0,4,8 src clock from ppll, i2c1,2,3,5,6,7 src clock from gpll*/
550 	src_clk_div = GPLL_HZ / hz;
551 	assert(src_clk_div - 1 < 127);
552 
553 	switch (clk_id) {
554 	case SCLK_I2C1:
555 		rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(1),
556 			     I2C_CLK_REG_VALUE(1, src_clk_div));
557 		break;
558 	case SCLK_I2C2:
559 		rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(2),
560 			     I2C_CLK_REG_VALUE(2, src_clk_div));
561 		break;
562 	case SCLK_I2C3:
563 		rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(3),
564 			     I2C_CLK_REG_VALUE(3, src_clk_div));
565 		break;
566 	case SCLK_I2C5:
567 		rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(5),
568 			     I2C_CLK_REG_VALUE(5, src_clk_div));
569 		break;
570 	case SCLK_I2C6:
571 		rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(6),
572 			     I2C_CLK_REG_VALUE(6, src_clk_div));
573 		break;
574 	case SCLK_I2C7:
575 		rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(7),
576 			     I2C_CLK_REG_VALUE(7, src_clk_div));
577 		break;
578 	default:
579 		printf("do not support this i2c bus\n");
580 		return -EINVAL;
581 	}
582 
583 	return rk3399_i2c_get_clk(cru, clk_id);
584 }
585 
586 /*
587  * RK3399 SPI clocks have a common divider-width (7 bits) and a single bit
588  * to select either CPLL or GPLL as the clock-parent. The location within
589  * the enclosing CLKSEL_CON (i.e. div_shift and sel_shift) are variable.
590  */
591 
592 struct spi_clkreg {
593 	u8 reg;  /* CLKSEL_CON[reg] register in CRU */
594 	u8 div_shift;
595 	u8 sel_shift;
596 };
597 
598 /*
599  * The entries are numbered relative to their offset from SCLK_SPI0.
600  *
601  * Note that SCLK_SPI3 (which is configured via PMUCRU and requires different
602  * logic is not supported).
603  */
604 static const struct spi_clkreg spi_clkregs[] = {
605 	[0] = { .reg = 59,
606 		.div_shift = CLK_SPI0_PLL_DIV_CON_SHIFT,
607 		.sel_shift = CLK_SPI0_PLL_SEL_SHIFT, },
608 	[1] = { .reg = 59,
609 		.div_shift = CLK_SPI1_PLL_DIV_CON_SHIFT,
610 		.sel_shift = CLK_SPI1_PLL_SEL_SHIFT, },
611 	[2] = { .reg = 60,
612 		.div_shift = CLK_SPI2_PLL_DIV_CON_SHIFT,
613 		.sel_shift = CLK_SPI2_PLL_SEL_SHIFT, },
614 	[3] = { .reg = 60,
615 		.div_shift = CLK_SPI4_PLL_DIV_CON_SHIFT,
616 		.sel_shift = CLK_SPI4_PLL_SEL_SHIFT, },
617 	[4] = { .reg = 58,
618 		.div_shift = CLK_SPI5_PLL_DIV_CON_SHIFT,
619 		.sel_shift = CLK_SPI5_PLL_SEL_SHIFT, },
620 };
621 
rk3399_spi_get_clk(struct rk3399_cru * cru,ulong clk_id)622 static ulong rk3399_spi_get_clk(struct rk3399_cru *cru, ulong clk_id)
623 {
624 	const struct spi_clkreg *spiclk = NULL;
625 	u32 div, val;
626 
627 	switch (clk_id) {
628 	case SCLK_SPI0 ... SCLK_SPI5:
629 		spiclk = &spi_clkregs[clk_id - SCLK_SPI0];
630 		break;
631 
632 	default:
633 		pr_err("%s: SPI clk-id %ld not supported\n", __func__, clk_id);
634 		return -EINVAL;
635 	}
636 
637 	val = readl(&cru->clksel_con[spiclk->reg]);
638 	div = bitfield_extract(val, spiclk->div_shift,
639 			       CLK_SPI_PLL_DIV_CON_WIDTH);
640 
641 	return DIV_TO_RATE(GPLL_HZ, div);
642 }
643 
rk3399_spi_set_clk(struct rk3399_cru * cru,ulong clk_id,uint hz)644 static ulong rk3399_spi_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz)
645 {
646 	const struct spi_clkreg *spiclk = NULL;
647 	int src_clk_div;
648 
649 	src_clk_div = DIV_ROUND_UP(GPLL_HZ, hz) - 1;
650 	assert(src_clk_div < 128);
651 
652 	switch (clk_id) {
653 	case SCLK_SPI1 ... SCLK_SPI5:
654 		spiclk = &spi_clkregs[clk_id - SCLK_SPI0];
655 		break;
656 
657 	default:
658 		pr_err("%s: SPI clk-id %ld not supported\n", __func__, clk_id);
659 		return -EINVAL;
660 	}
661 
662 	rk_clrsetreg(&cru->clksel_con[spiclk->reg],
663 		     ((CLK_SPI_PLL_DIV_CON_MASK << spiclk->div_shift) |
664 		       (CLK_SPI_PLL_SEL_GPLL << spiclk->sel_shift)),
665 		     ((src_clk_div << spiclk->div_shift) |
666 		      (CLK_SPI_PLL_SEL_GPLL << spiclk->sel_shift)));
667 
668 	return rk3399_spi_get_clk(cru, clk_id);
669 }
670 
rk3399_vop_set_clk(struct rk3399_cru * cru,ulong clk_id,u32 hz)671 static ulong rk3399_vop_set_clk(struct rk3399_cru *cru, ulong clk_id, u32 hz)
672 {
673 	struct pll_div vpll_config = {0};
674 	int aclk_vop = 198 * MHz;
675 	void *aclkreg_addr, *dclkreg_addr;
676 	u32 div;
677 
678 	switch (clk_id) {
679 	case DCLK_VOP0:
680 		aclkreg_addr = &cru->clksel_con[47];
681 		dclkreg_addr = &cru->clksel_con[49];
682 		break;
683 	case DCLK_VOP1:
684 		aclkreg_addr = &cru->clksel_con[48];
685 		dclkreg_addr = &cru->clksel_con[50];
686 		break;
687 	default:
688 		return -EINVAL;
689 	}
690 	/* vop aclk source clk: cpll */
691 	div = CPLL_HZ / aclk_vop;
692 	assert(div - 1 < 32);
693 
694 	rk_clrsetreg(aclkreg_addr,
695 		     ACLK_VOP_PLL_SEL_MASK | ACLK_VOP_DIV_CON_MASK,
696 		     ACLK_VOP_PLL_SEL_CPLL << ACLK_VOP_PLL_SEL_SHIFT |
697 		     (div - 1) << ACLK_VOP_DIV_CON_SHIFT);
698 
699 	/* vop dclk source from vpll, and equals to vpll(means div == 1) */
700 	if (pll_para_config(hz, &vpll_config))
701 		return -1;
702 
703 	rkclk_set_pll(&cru->vpll_con[0], &vpll_config);
704 
705 	rk_clrsetreg(dclkreg_addr,
706 		     DCLK_VOP_DCLK_SEL_MASK | DCLK_VOP_PLL_SEL_MASK |
707 		     DCLK_VOP_DIV_CON_MASK,
708 		     DCLK_VOP_DCLK_SEL_DIVOUT << DCLK_VOP_DCLK_SEL_SHIFT |
709 		     DCLK_VOP_PLL_SEL_VPLL << DCLK_VOP_PLL_SEL_SHIFT |
710 		     (1 - 1) << DCLK_VOP_DIV_CON_SHIFT);
711 
712 	return hz;
713 }
714 
rk3399_mmc_get_clk(struct rk3399_cru * cru,uint clk_id)715 static ulong rk3399_mmc_get_clk(struct rk3399_cru *cru, uint clk_id)
716 {
717 	u32 div, con;
718 
719 	switch (clk_id) {
720 	case HCLK_SDMMC:
721 	case SCLK_SDMMC:
722 		con = readl(&cru->clksel_con[16]);
723 		/* dwmmc controller have internal div 2 */
724 		div = 2;
725 		break;
726 	case SCLK_EMMC:
727 		con = readl(&cru->clksel_con[21]);
728 		div = 1;
729 		break;
730 	default:
731 		return -EINVAL;
732 	}
733 
734 	div *= (con & CLK_EMMC_DIV_CON_MASK) >> CLK_EMMC_DIV_CON_SHIFT;
735 	if ((con & CLK_EMMC_PLL_MASK) >> CLK_EMMC_PLL_SHIFT
736 			== CLK_EMMC_PLL_SEL_24M)
737 		return DIV_TO_RATE(OSC_HZ, div);
738 	else
739 		return DIV_TO_RATE(GPLL_HZ, div);
740 }
741 
rk3399_mmc_set_clk(struct rk3399_cru * cru,ulong clk_id,ulong set_rate)742 static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru,
743 				ulong clk_id, ulong set_rate)
744 {
745 	int src_clk_div;
746 	int aclk_emmc = 198 * MHz;
747 
748 	switch (clk_id) {
749 	case HCLK_SDMMC:
750 	case SCLK_SDMMC:
751 		/* Select clk_sdmmc source from GPLL by default */
752 		/* mmc clock defaulg div 2 internal, provide double in cru */
753 		src_clk_div = DIV_ROUND_UP(GPLL_HZ / 2, set_rate);
754 
755 		if (src_clk_div > 128) {
756 			/* use 24MHz source for 400KHz clock */
757 			src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, set_rate);
758 			assert(src_clk_div - 1 < 128);
759 			rk_clrsetreg(&cru->clksel_con[16],
760 				     CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
761 				     CLK_EMMC_PLL_SEL_24M << CLK_EMMC_PLL_SHIFT |
762 				     (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
763 		} else {
764 			rk_clrsetreg(&cru->clksel_con[16],
765 				     CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
766 				     CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
767 				     (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
768 		}
769 		break;
770 	case SCLK_EMMC:
771 		/* Select aclk_emmc source from GPLL */
772 		src_clk_div = DIV_ROUND_UP(GPLL_HZ, aclk_emmc);
773 		assert(src_clk_div - 1 < 32);
774 
775 		rk_clrsetreg(&cru->clksel_con[21],
776 			     ACLK_EMMC_PLL_SEL_MASK | ACLK_EMMC_DIV_CON_MASK,
777 			     ACLK_EMMC_PLL_SEL_GPLL << ACLK_EMMC_PLL_SEL_SHIFT |
778 			     (src_clk_div - 1) << ACLK_EMMC_DIV_CON_SHIFT);
779 
780 		/* Select clk_emmc source from GPLL too */
781 		src_clk_div = DIV_ROUND_UP(GPLL_HZ, set_rate);
782 		assert(src_clk_div - 1 < 128);
783 
784 		rk_clrsetreg(&cru->clksel_con[22],
785 			     CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
786 			     CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
787 			     (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
788 		break;
789 	default:
790 		return -EINVAL;
791 	}
792 	return rk3399_mmc_get_clk(cru, clk_id);
793 }
794 
rk3399_gmac_set_clk(struct rk3399_cru * cru,ulong rate)795 static ulong rk3399_gmac_set_clk(struct rk3399_cru *cru, ulong rate)
796 {
797 	ulong ret;
798 
799 	/*
800 	 * The RGMII CLK can be derived either from an external "clkin"
801 	 * or can be generated from internally by a divider from SCLK_MAC.
802 	 */
803 	if (readl(&cru->clksel_con[19]) & BIT(4)) {
804 		/* An external clock will always generate the right rate... */
805 		ret = rate;
806 	} else {
807 		/*
808 		 * No platform uses an internal clock to date.
809 		 * Implement this once it becomes necessary and print an error
810 		 * if someone tries to use it (while it remains unimplemented).
811 		 */
812 		pr_err("%s: internal clock is UNIMPLEMENTED\n", __func__);
813 		ret = 0;
814 	}
815 
816 	return ret;
817 }
818 
819 #define PMUSGRF_DDR_RGN_CON16 0xff330040
rk3399_ddr_set_clk(struct rk3399_cru * cru,ulong set_rate)820 static ulong rk3399_ddr_set_clk(struct rk3399_cru *cru,
821 				ulong set_rate)
822 {
823 	struct pll_div dpll_cfg;
824 
825 	/*  IC ECO bug, need to set this register */
826 	writel(0xc000c000, PMUSGRF_DDR_RGN_CON16);
827 
828 	/*  clk_ddrc == DPLL = 24MHz / refdiv * fbdiv / postdiv1 / postdiv2 */
829 	switch (set_rate) {
830 	case 50 * MHz:
831 		dpll_cfg = (struct pll_div)
832 		{.refdiv = 1, .fbdiv = 12, .postdiv1 = 3, .postdiv2 = 2};
833 		break;
834 	case 200 * MHz:
835 		dpll_cfg = (struct pll_div)
836 		{.refdiv = 1, .fbdiv = 50, .postdiv1 = 6, .postdiv2 = 1};
837 		break;
838 	case 300 * MHz:
839 		dpll_cfg = (struct pll_div)
840 		{.refdiv = 2, .fbdiv = 100, .postdiv1 = 4, .postdiv2 = 1};
841 		break;
842 	case 400 * MHz:
843 		dpll_cfg = (struct pll_div)
844 		{.refdiv = 1, .fbdiv = 50, .postdiv1 = 3, .postdiv2 = 1};
845 		break;
846 	case 666 * MHz:
847 		dpll_cfg = (struct pll_div)
848 		{.refdiv = 2, .fbdiv = 111, .postdiv1 = 2, .postdiv2 = 1};
849 		break;
850 	case 800 * MHz:
851 		dpll_cfg = (struct pll_div)
852 		{.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1};
853 		break;
854 	case 933 * MHz:
855 		dpll_cfg = (struct pll_div)
856 		{.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1};
857 		break;
858 	default:
859 		pr_err("Unsupported SDRAM frequency!,%ld\n", set_rate);
860 	}
861 	rkclk_set_pll(&cru->dpll_con[0], &dpll_cfg);
862 
863 	return set_rate;
864 }
865 
rk3399_saradc_get_clk(struct rk3399_cru * cru)866 static ulong rk3399_saradc_get_clk(struct rk3399_cru *cru)
867 {
868 	u32 div, val;
869 
870 	val = readl(&cru->clksel_con[26]);
871 	div = bitfield_extract(val, CLK_SARADC_DIV_CON_SHIFT,
872 			       CLK_SARADC_DIV_CON_WIDTH);
873 
874 	return DIV_TO_RATE(OSC_HZ, div);
875 }
876 
rk3399_saradc_set_clk(struct rk3399_cru * cru,uint hz)877 static ulong rk3399_saradc_set_clk(struct rk3399_cru *cru, uint hz)
878 {
879 	int src_clk_div;
880 
881 	src_clk_div = DIV_ROUND_UP(OSC_HZ, hz) - 1;
882 	assert(src_clk_div < 128);
883 
884 	rk_clrsetreg(&cru->clksel_con[26],
885 		     CLK_SARADC_DIV_CON_MASK,
886 		     src_clk_div << CLK_SARADC_DIV_CON_SHIFT);
887 
888 	return rk3399_saradc_get_clk(cru);
889 }
890 
rk3399_clk_get_rate(struct clk * clk)891 static ulong rk3399_clk_get_rate(struct clk *clk)
892 {
893 	struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
894 	ulong rate = 0;
895 
896 	switch (clk->id) {
897 	case 0 ... 63:
898 		return 0;
899 	case HCLK_SDMMC:
900 	case SCLK_SDMMC:
901 	case SCLK_EMMC:
902 		rate = rk3399_mmc_get_clk(priv->cru, clk->id);
903 		break;
904 	case SCLK_I2C1:
905 	case SCLK_I2C2:
906 	case SCLK_I2C3:
907 	case SCLK_I2C5:
908 	case SCLK_I2C6:
909 	case SCLK_I2C7:
910 		rate = rk3399_i2c_get_clk(priv->cru, clk->id);
911 		break;
912 	case SCLK_SPI0...SCLK_SPI5:
913 		rate = rk3399_spi_get_clk(priv->cru, clk->id);
914 		break;
915 	case SCLK_UART0:
916 	case SCLK_UART1:
917 	case SCLK_UART2:
918 	case SCLK_UART3:
919 		return 24000000;
920 	case PCLK_HDMI_CTRL:
921 		break;
922 	case DCLK_VOP0:
923 	case DCLK_VOP1:
924 		break;
925 	case PCLK_EFUSE1024NS:
926 		break;
927 	case SCLK_SARADC:
928 		rate = rk3399_saradc_get_clk(priv->cru);
929 		break;
930 	case ACLK_VIO:
931 	case ACLK_HDCP:
932 	case ACLK_GIC_PRE:
933 	case PCLK_DDR:
934 		break;
935 	default:
936 		log_debug("Unknown clock %lu\n", clk->id);
937 		return -ENOENT;
938 	}
939 
940 	return rate;
941 }
942 
rk3399_clk_set_rate(struct clk * clk,ulong rate)943 static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate)
944 {
945 	struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
946 	ulong ret = 0;
947 
948 	switch (clk->id) {
949 	case 0 ... 63:
950 		return 0;
951 
952 	case ACLK_PERIHP:
953 	case HCLK_PERIHP:
954 	case PCLK_PERIHP:
955 		return 0;
956 
957 	case ACLK_PERILP0:
958 	case HCLK_PERILP0:
959 	case PCLK_PERILP0:
960 		return 0;
961 
962 	case ACLK_CCI:
963 		return 0;
964 
965 	case HCLK_PERILP1:
966 	case PCLK_PERILP1:
967 		return 0;
968 
969 	case HCLK_SDMMC:
970 	case SCLK_SDMMC:
971 	case SCLK_EMMC:
972 		ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate);
973 		break;
974 	case SCLK_MAC:
975 		ret = rk3399_gmac_set_clk(priv->cru, rate);
976 		break;
977 	case SCLK_I2C1:
978 	case SCLK_I2C2:
979 	case SCLK_I2C3:
980 	case SCLK_I2C5:
981 	case SCLK_I2C6:
982 	case SCLK_I2C7:
983 		ret = rk3399_i2c_set_clk(priv->cru, clk->id, rate);
984 		break;
985 	case SCLK_SPI0...SCLK_SPI5:
986 		ret = rk3399_spi_set_clk(priv->cru, clk->id, rate);
987 		break;
988 	case PCLK_HDMI_CTRL:
989 	case PCLK_VIO_GRF:
990 		/* the PCLK gates for video are enabled by default */
991 		break;
992 	case DCLK_VOP0:
993 	case DCLK_VOP1:
994 		ret = rk3399_vop_set_clk(priv->cru, clk->id, rate);
995 		break;
996 	case SCLK_DDRCLK:
997 		ret = rk3399_ddr_set_clk(priv->cru, rate);
998 		break;
999 	case PCLK_EFUSE1024NS:
1000 		break;
1001 	case SCLK_SARADC:
1002 		ret = rk3399_saradc_set_clk(priv->cru, rate);
1003 		break;
1004 	case ACLK_VIO:
1005 	case ACLK_HDCP:
1006 	case ACLK_GIC_PRE:
1007 	case PCLK_DDR:
1008 		return 0;
1009 	default:
1010 		log_debug("Unknown clock %lu\n", clk->id);
1011 		return -ENOENT;
1012 	}
1013 
1014 	return ret;
1015 }
1016 
rk3399_gmac_set_parent(struct clk * clk,struct clk * parent)1017 static int __maybe_unused rk3399_gmac_set_parent(struct clk *clk,
1018 						 struct clk *parent)
1019 {
1020 	struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
1021 	const char *clock_output_name;
1022 	int ret;
1023 
1024 	/*
1025 	 * If the requested parent is in the same clock-controller and
1026 	 * the id is SCLK_MAC ("clk_gmac"), switch to the internal clock.
1027 	 */
1028 	if (parent->dev == clk->dev && parent->id == SCLK_MAC) {
1029 		debug("%s: switching RGMII to SCLK_MAC\n", __func__);
1030 		rk_clrreg(&priv->cru->clksel_con[19], BIT(4));
1031 		return 0;
1032 	}
1033 
1034 	/*
1035 	 * Otherwise, we need to check the clock-output-names of the
1036 	 * requested parent to see if the requested id is "clkin_gmac".
1037 	 */
1038 	ret = dev_read_string_index(parent->dev, "clock-output-names",
1039 				    parent->id, &clock_output_name);
1040 	if (ret < 0)
1041 		return -ENODATA;
1042 
1043 	/* If this is "clkin_gmac", switch to the external clock input */
1044 	if (!strcmp(clock_output_name, "clkin_gmac")) {
1045 		debug("%s: switching RGMII to CLKIN\n", __func__);
1046 		rk_setreg(&priv->cru->clksel_con[19], BIT(4));
1047 		return 0;
1048 	}
1049 
1050 	return -EINVAL;
1051 }
1052 
rk3399_clk_set_parent(struct clk * clk,struct clk * parent)1053 static int __maybe_unused rk3399_clk_set_parent(struct clk *clk,
1054 						struct clk *parent)
1055 {
1056 	switch (clk->id) {
1057 	case SCLK_RMII_SRC:
1058 		return rk3399_gmac_set_parent(clk, parent);
1059 	}
1060 
1061 	debug("%s: unsupported clk %ld\n", __func__, clk->id);
1062 	return -ENOENT;
1063 }
1064 
1065 static struct clk_ops rk3399_clk_ops = {
1066 	.get_rate = rk3399_clk_get_rate,
1067 	.set_rate = rk3399_clk_set_rate,
1068 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
1069 	.set_parent = rk3399_clk_set_parent,
1070 #endif
1071 };
1072 
1073 #ifdef CONFIG_SPL_BUILD
rkclk_init(struct rk3399_cru * cru)1074 static void rkclk_init(struct rk3399_cru *cru)
1075 {
1076 	u32 aclk_div;
1077 	u32 hclk_div;
1078 	u32 pclk_div;
1079 
1080 	rk3399_configure_cpu_l(cru, APLL_L_600_MHZ);
1081 	rk3399_configure_cpu_b(cru, APLL_B_600_MHZ);
1082 	/*
1083 	 * some cru registers changed by bootrom, we'd better reset them to
1084 	 * reset/default values described in TRM to avoid confusion in kernel.
1085 	 * Please consider these three lines as a fix of bootrom bug.
1086 	 */
1087 	rk_clrsetreg(&cru->clksel_con[12], 0xffff, 0x4101);
1088 	rk_clrsetreg(&cru->clksel_con[19], 0xffff, 0x033f);
1089 	rk_clrsetreg(&cru->clksel_con[56], 0x0003, 0x0003);
1090 
1091 	/* configure gpll cpll */
1092 	rkclk_set_pll(&cru->gpll_con[0], &gpll_init_cfg);
1093 	rkclk_set_pll(&cru->cpll_con[0], &cpll_init_cfg);
1094 
1095 	/* configure perihp aclk, hclk, pclk */
1096 	aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1;
1097 	assert((aclk_div + 1) * PERIHP_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
1098 
1099 	hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1;
1100 	assert((hclk_div + 1) * PERIHP_HCLK_HZ ==
1101 	       PERIHP_ACLK_HZ && (hclk_div < 0x4));
1102 
1103 	pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1;
1104 	assert((pclk_div + 1) * PERIHP_PCLK_HZ ==
1105 	       PERIHP_ACLK_HZ && (pclk_div < 0x7));
1106 
1107 	rk_clrsetreg(&cru->clksel_con[14],
1108 		     PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK |
1109 		     ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK,
1110 		     pclk_div << PCLK_PERIHP_DIV_CON_SHIFT |
1111 		     hclk_div << HCLK_PERIHP_DIV_CON_SHIFT |
1112 		     ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT |
1113 		     aclk_div << ACLK_PERIHP_DIV_CON_SHIFT);
1114 
1115 	/* configure perilp0 aclk, hclk, pclk */
1116 	aclk_div = GPLL_HZ / PERILP0_ACLK_HZ - 1;
1117 	assert((aclk_div + 1) * PERILP0_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
1118 
1119 	hclk_div = PERILP0_ACLK_HZ / PERILP0_HCLK_HZ - 1;
1120 	assert((hclk_div + 1) * PERILP0_HCLK_HZ ==
1121 	       PERILP0_ACLK_HZ && (hclk_div < 0x4));
1122 
1123 	pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1;
1124 	assert((pclk_div + 1) * PERILP0_PCLK_HZ ==
1125 	       PERILP0_ACLK_HZ && (pclk_div < 0x7));
1126 
1127 	rk_clrsetreg(&cru->clksel_con[23],
1128 		     PCLK_PERILP0_DIV_CON_MASK | HCLK_PERILP0_DIV_CON_MASK |
1129 		     ACLK_PERILP0_PLL_SEL_MASK | ACLK_PERILP0_DIV_CON_MASK,
1130 		     pclk_div << PCLK_PERILP0_DIV_CON_SHIFT |
1131 		     hclk_div << HCLK_PERILP0_DIV_CON_SHIFT |
1132 		     ACLK_PERILP0_PLL_SEL_GPLL << ACLK_PERILP0_PLL_SEL_SHIFT |
1133 		     aclk_div << ACLK_PERILP0_DIV_CON_SHIFT);
1134 
1135 	/* perilp1 hclk select gpll as source */
1136 	hclk_div = GPLL_HZ / PERILP1_HCLK_HZ - 1;
1137 	assert((hclk_div + 1) * PERILP1_HCLK_HZ ==
1138 	       GPLL_HZ && (hclk_div < 0x1f));
1139 
1140 	pclk_div = PERILP1_HCLK_HZ / PERILP1_HCLK_HZ - 1;
1141 	assert((pclk_div + 1) * PERILP1_HCLK_HZ ==
1142 	       PERILP1_HCLK_HZ && (hclk_div < 0x7));
1143 
1144 	rk_clrsetreg(&cru->clksel_con[25],
1145 		     PCLK_PERILP1_DIV_CON_MASK | HCLK_PERILP1_DIV_CON_MASK |
1146 		     HCLK_PERILP1_PLL_SEL_MASK,
1147 		     pclk_div << PCLK_PERILP1_DIV_CON_SHIFT |
1148 		     hclk_div << HCLK_PERILP1_DIV_CON_SHIFT |
1149 		     HCLK_PERILP1_PLL_SEL_GPLL << HCLK_PERILP1_PLL_SEL_SHIFT);
1150 }
1151 #endif
1152 
rk3399_clk_probe(struct udevice * dev)1153 static int rk3399_clk_probe(struct udevice *dev)
1154 {
1155 #ifdef CONFIG_SPL_BUILD
1156 	struct rk3399_clk_priv *priv = dev_get_priv(dev);
1157 
1158 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1159 	struct rk3399_clk_plat *plat = dev_get_platdata(dev);
1160 
1161 	priv->cru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
1162 #endif
1163 	rkclk_init(priv->cru);
1164 #endif
1165 	return 0;
1166 }
1167 
rk3399_clk_ofdata_to_platdata(struct udevice * dev)1168 static int rk3399_clk_ofdata_to_platdata(struct udevice *dev)
1169 {
1170 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
1171 	struct rk3399_clk_priv *priv = dev_get_priv(dev);
1172 
1173 	priv->cru = dev_read_addr_ptr(dev);
1174 #endif
1175 	return 0;
1176 }
1177 
rk3399_clk_bind(struct udevice * dev)1178 static int rk3399_clk_bind(struct udevice *dev)
1179 {
1180 	int ret;
1181 	struct udevice *sys_child;
1182 	struct sysreset_reg *priv;
1183 
1184 	/* The reset driver does not have a device node, so bind it here */
1185 	ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
1186 				 &sys_child);
1187 	if (ret) {
1188 		debug("Warning: No sysreset driver: ret=%d\n", ret);
1189 	} else {
1190 		priv = malloc(sizeof(struct sysreset_reg));
1191 		priv->glb_srst_fst_value = offsetof(struct rk3399_cru,
1192 						    glb_srst_fst_value);
1193 		priv->glb_srst_snd_value = offsetof(struct rk3399_cru,
1194 						    glb_srst_snd_value);
1195 		sys_child->priv = priv;
1196 	}
1197 
1198 #if CONFIG_IS_ENABLED(RESET_ROCKCHIP)
1199 	ret = offsetof(struct rk3399_cru, softrst_con[0]);
1200 	ret = rockchip_reset_bind(dev, ret, 21);
1201 	if (ret)
1202 		debug("Warning: software reset driver bind faile\n");
1203 #endif
1204 
1205 	return 0;
1206 }
1207 
1208 static const struct udevice_id rk3399_clk_ids[] = {
1209 	{ .compatible = "rockchip,rk3399-cru" },
1210 	{ }
1211 };
1212 
1213 U_BOOT_DRIVER(clk_rk3399) = {
1214 	.name		= "rockchip_rk3399_cru",
1215 	.id		= UCLASS_CLK,
1216 	.of_match	= rk3399_clk_ids,
1217 	.priv_auto_alloc_size = sizeof(struct rk3399_clk_priv),
1218 	.ofdata_to_platdata = rk3399_clk_ofdata_to_platdata,
1219 	.ops		= &rk3399_clk_ops,
1220 	.bind		= rk3399_clk_bind,
1221 	.probe		= rk3399_clk_probe,
1222 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1223 	.platdata_auto_alloc_size = sizeof(struct rk3399_clk_plat),
1224 #endif
1225 };
1226 
rk3399_i2c_get_pmuclk(struct rk3399_pmucru * pmucru,ulong clk_id)1227 static ulong rk3399_i2c_get_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id)
1228 {
1229 	u32 div, con;
1230 
1231 	switch (clk_id) {
1232 	case SCLK_I2C0_PMU:
1233 		con = readl(&pmucru->pmucru_clksel[2]);
1234 		div = I2C_CLK_DIV_VALUE(con, 0);
1235 		break;
1236 	case SCLK_I2C4_PMU:
1237 		con = readl(&pmucru->pmucru_clksel[3]);
1238 		div = I2C_CLK_DIV_VALUE(con, 4);
1239 		break;
1240 	case SCLK_I2C8_PMU:
1241 		con = readl(&pmucru->pmucru_clksel[2]);
1242 		div = I2C_CLK_DIV_VALUE(con, 8);
1243 		break;
1244 	default:
1245 		printf("do not support this i2c bus\n");
1246 		return -EINVAL;
1247 	}
1248 
1249 	return DIV_TO_RATE(PPLL_HZ, div);
1250 }
1251 
rk3399_i2c_set_pmuclk(struct rk3399_pmucru * pmucru,ulong clk_id,uint hz)1252 static ulong rk3399_i2c_set_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id,
1253 				   uint hz)
1254 {
1255 	int src_clk_div;
1256 
1257 	src_clk_div = PPLL_HZ / hz;
1258 	assert(src_clk_div - 1 < 127);
1259 
1260 	switch (clk_id) {
1261 	case SCLK_I2C0_PMU:
1262 		rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(0),
1263 			     I2C_PMUCLK_REG_VALUE(0, src_clk_div));
1264 		break;
1265 	case SCLK_I2C4_PMU:
1266 		rk_clrsetreg(&pmucru->pmucru_clksel[3], I2C_PMUCLK_REG_MASK(4),
1267 			     I2C_PMUCLK_REG_VALUE(4, src_clk_div));
1268 		break;
1269 	case SCLK_I2C8_PMU:
1270 		rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(8),
1271 			     I2C_PMUCLK_REG_VALUE(8, src_clk_div));
1272 		break;
1273 	default:
1274 		printf("do not support this i2c bus\n");
1275 		return -EINVAL;
1276 	}
1277 
1278 	return DIV_TO_RATE(PPLL_HZ, src_clk_div);
1279 }
1280 
rk3399_pwm_get_clk(struct rk3399_pmucru * pmucru)1281 static ulong rk3399_pwm_get_clk(struct rk3399_pmucru *pmucru)
1282 {
1283 	u32 div, con;
1284 
1285 	/* PWM closk rate is same as pclk_pmu */
1286 	con = readl(&pmucru->pmucru_clksel[0]);
1287 	div = con & PMU_PCLK_DIV_CON_MASK;
1288 
1289 	return DIV_TO_RATE(PPLL_HZ, div);
1290 }
1291 
rk3399_pmuclk_get_rate(struct clk * clk)1292 static ulong rk3399_pmuclk_get_rate(struct clk *clk)
1293 {
1294 	struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev);
1295 	ulong rate = 0;
1296 
1297 	switch (clk->id) {
1298 	case PLL_PPLL:
1299 		return PPLL_HZ;
1300 	case PCLK_RKPWM_PMU:
1301 		rate = rk3399_pwm_get_clk(priv->pmucru);
1302 		break;
1303 	case SCLK_I2C0_PMU:
1304 	case SCLK_I2C4_PMU:
1305 	case SCLK_I2C8_PMU:
1306 		rate = rk3399_i2c_get_pmuclk(priv->pmucru, clk->id);
1307 		break;
1308 	default:
1309 		return -ENOENT;
1310 	}
1311 
1312 	return rate;
1313 }
1314 
rk3399_pmuclk_set_rate(struct clk * clk,ulong rate)1315 static ulong rk3399_pmuclk_set_rate(struct clk *clk, ulong rate)
1316 {
1317 	struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev);
1318 	ulong ret = 0;
1319 
1320 	switch (clk->id) {
1321 	case PLL_PPLL:
1322 		/*
1323 		 * This has already been set up and we don't want/need
1324 		 * to change it here.  Accept the request though, as the
1325 		 * device-tree has this in an 'assigned-clocks' list.
1326 		 */
1327 		return PPLL_HZ;
1328 	case SCLK_I2C0_PMU:
1329 	case SCLK_I2C4_PMU:
1330 	case SCLK_I2C8_PMU:
1331 		ret = rk3399_i2c_set_pmuclk(priv->pmucru, clk->id, rate);
1332 		break;
1333 	default:
1334 		return -ENOENT;
1335 	}
1336 
1337 	return ret;
1338 }
1339 
1340 static struct clk_ops rk3399_pmuclk_ops = {
1341 	.get_rate = rk3399_pmuclk_get_rate,
1342 	.set_rate = rk3399_pmuclk_set_rate,
1343 };
1344 
1345 #ifndef CONFIG_SPL_BUILD
pmuclk_init(struct rk3399_pmucru * pmucru)1346 static void pmuclk_init(struct rk3399_pmucru *pmucru)
1347 {
1348 	u32 pclk_div;
1349 
1350 	/*  configure pmu pll(ppll) */
1351 	rkclk_set_pll(&pmucru->ppll_con[0], &ppll_init_cfg);
1352 
1353 	/*  configure pmu pclk */
1354 	pclk_div = PPLL_HZ / PMU_PCLK_HZ - 1;
1355 	rk_clrsetreg(&pmucru->pmucru_clksel[0],
1356 		     PMU_PCLK_DIV_CON_MASK,
1357 		     pclk_div << PMU_PCLK_DIV_CON_SHIFT);
1358 }
1359 #endif
1360 
rk3399_pmuclk_probe(struct udevice * dev)1361 static int rk3399_pmuclk_probe(struct udevice *dev)
1362 {
1363 #if CONFIG_IS_ENABLED(OF_PLATDATA) || !defined(CONFIG_SPL_BUILD)
1364 	struct rk3399_pmuclk_priv *priv = dev_get_priv(dev);
1365 #endif
1366 
1367 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1368 	struct rk3399_pmuclk_plat *plat = dev_get_platdata(dev);
1369 
1370 	priv->pmucru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
1371 #endif
1372 
1373 #ifndef CONFIG_SPL_BUILD
1374 	pmuclk_init(priv->pmucru);
1375 #endif
1376 	return 0;
1377 }
1378 
rk3399_pmuclk_ofdata_to_platdata(struct udevice * dev)1379 static int rk3399_pmuclk_ofdata_to_platdata(struct udevice *dev)
1380 {
1381 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
1382 	struct rk3399_pmuclk_priv *priv = dev_get_priv(dev);
1383 
1384 	priv->pmucru = dev_read_addr_ptr(dev);
1385 #endif
1386 	return 0;
1387 }
1388 
rk3399_pmuclk_bind(struct udevice * dev)1389 static int rk3399_pmuclk_bind(struct udevice *dev)
1390 {
1391 #if CONFIG_IS_ENABLED(CONFIG_RESET_ROCKCHIP)
1392 	int ret;
1393 
1394 	ret = offsetof(struct rk3399_pmucru, pmucru_softrst_con[0]);
1395 	ret = rockchip_reset_bind(dev, ret, 2);
1396 	if (ret)
1397 		debug("Warning: software reset driver bind faile\n");
1398 #endif
1399 	return 0;
1400 }
1401 
1402 static const struct udevice_id rk3399_pmuclk_ids[] = {
1403 	{ .compatible = "rockchip,rk3399-pmucru" },
1404 	{ }
1405 };
1406 
1407 U_BOOT_DRIVER(rockchip_rk3399_pmuclk) = {
1408 	.name		= "rockchip_rk3399_pmucru",
1409 	.id		= UCLASS_CLK,
1410 	.of_match	= rk3399_pmuclk_ids,
1411 	.priv_auto_alloc_size = sizeof(struct rk3399_pmuclk_priv),
1412 	.ofdata_to_platdata = rk3399_pmuclk_ofdata_to_platdata,
1413 	.ops		= &rk3399_pmuclk_ops,
1414 	.probe		= rk3399_pmuclk_probe,
1415 	.bind		= rk3399_pmuclk_bind,
1416 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1417 	.platdata_auto_alloc_size = sizeof(struct rk3399_pmuclk_plat),
1418 #endif
1419 };
1420