1 /* 2 * (C) Copyright 2015 Google, Inc 3 * (C) 2017 Theobroma Systems Design und Consulting GmbH 4 * 5 * SPDX-License-Identifier: GPL-2.0 6 */ 7 8 #include <common.h> 9 #include <clk-uclass.h> 10 #include <dm.h> 11 #include <dt-structs.h> 12 #include <errno.h> 13 #include <mapmem.h> 14 #include <syscon.h> 15 #include <asm/io.h> 16 #include <asm/arch/clock.h> 17 #include <asm/arch/cru_rk3399.h> 18 #include <asm/arch/hardware.h> 19 #include <dm/lists.h> 20 #include <dt-bindings/clock/rk3399-cru.h> 21 22 DECLARE_GLOBAL_DATA_PTR; 23 24 #if CONFIG_IS_ENABLED(OF_PLATDATA) 25 struct rk3399_clk_plat { 26 struct dtd_rockchip_rk3399_cru dtd; 27 }; 28 29 struct rk3399_pmuclk_plat { 30 struct dtd_rockchip_rk3399_pmucru dtd; 31 }; 32 #endif 33 34 struct pll_div { 35 u32 refdiv; 36 u32 fbdiv; 37 u32 postdiv1; 38 u32 postdiv2; 39 u32 frac; 40 }; 41 42 #define RATE_TO_DIV(input_rate, output_rate) \ 43 ((input_rate) / (output_rate) - 1); 44 #define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1)) 45 46 #define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\ 47 .refdiv = _refdiv,\ 48 .fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\ 49 .postdiv1 = _postdiv1, .postdiv2 = _postdiv2}; 50 51 #if defined(CONFIG_SPL_BUILD) 52 static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1); 53 static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2, 2); 54 #else 55 static const struct pll_div ppll_init_cfg = PLL_DIVISORS(PPLL_HZ, 2, 2, 1); 56 #endif 57 58 static const struct pll_div apll_l_1600_cfg = PLL_DIVISORS(1600*MHz, 3, 1, 1); 59 static const struct pll_div apll_l_600_cfg = PLL_DIVISORS(600*MHz, 1, 2, 1); 60 61 static const struct pll_div *apll_l_cfgs[] = { 62 [APLL_L_1600_MHZ] = &apll_l_1600_cfg, 63 [APLL_L_600_MHZ] = &apll_l_600_cfg, 64 }; 65 66 enum { 67 /* PLL_CON0 */ 68 PLL_FBDIV_MASK = 0xfff, 69 PLL_FBDIV_SHIFT = 0, 70 71 /* PLL_CON1 */ 72 PLL_POSTDIV2_SHIFT = 12, 73 PLL_POSTDIV2_MASK = 0x7 << PLL_POSTDIV2_SHIFT, 74 PLL_POSTDIV1_SHIFT = 8, 75 PLL_POSTDIV1_MASK = 0x7 << PLL_POSTDIV1_SHIFT, 76 PLL_REFDIV_MASK = 0x3f, 77 PLL_REFDIV_SHIFT = 0, 78 79 /* PLL_CON2 */ 80 PLL_LOCK_STATUS_SHIFT = 31, 81 PLL_LOCK_STATUS_MASK = 1 << PLL_LOCK_STATUS_SHIFT, 82 PLL_FRACDIV_MASK = 0xffffff, 83 PLL_FRACDIV_SHIFT = 0, 84 85 /* PLL_CON3 */ 86 PLL_MODE_SHIFT = 8, 87 PLL_MODE_MASK = 3 << PLL_MODE_SHIFT, 88 PLL_MODE_SLOW = 0, 89 PLL_MODE_NORM, 90 PLL_MODE_DEEP, 91 PLL_DSMPD_SHIFT = 3, 92 PLL_DSMPD_MASK = 1 << PLL_DSMPD_SHIFT, 93 PLL_INTEGER_MODE = 1, 94 95 /* PMUCRU_CLKSEL_CON0 */ 96 PMU_PCLK_DIV_CON_MASK = 0x1f, 97 PMU_PCLK_DIV_CON_SHIFT = 0, 98 99 /* PMUCRU_CLKSEL_CON1 */ 100 SPI3_PLL_SEL_SHIFT = 7, 101 SPI3_PLL_SEL_MASK = 1 << SPI3_PLL_SEL_SHIFT, 102 SPI3_PLL_SEL_24M = 0, 103 SPI3_PLL_SEL_PPLL = 1, 104 SPI3_DIV_CON_SHIFT = 0x0, 105 SPI3_DIV_CON_MASK = 0x7f, 106 107 /* PMUCRU_CLKSEL_CON2 */ 108 I2C_DIV_CON_MASK = 0x7f, 109 CLK_I2C8_DIV_CON_SHIFT = 8, 110 CLK_I2C0_DIV_CON_SHIFT = 0, 111 112 /* PMUCRU_CLKSEL_CON3 */ 113 CLK_I2C4_DIV_CON_SHIFT = 0, 114 115 /* CLKSEL_CON0 */ 116 ACLKM_CORE_L_DIV_CON_SHIFT = 8, 117 ACLKM_CORE_L_DIV_CON_MASK = 0x1f << ACLKM_CORE_L_DIV_CON_SHIFT, 118 CLK_CORE_L_PLL_SEL_SHIFT = 6, 119 CLK_CORE_L_PLL_SEL_MASK = 3 << CLK_CORE_L_PLL_SEL_SHIFT, 120 CLK_CORE_L_PLL_SEL_ALPLL = 0x0, 121 CLK_CORE_L_PLL_SEL_ABPLL = 0x1, 122 CLK_CORE_L_PLL_SEL_DPLL = 0x10, 123 CLK_CORE_L_PLL_SEL_GPLL = 0x11, 124 CLK_CORE_L_DIV_MASK = 0x1f, 125 CLK_CORE_L_DIV_SHIFT = 0, 126 127 /* CLKSEL_CON1 */ 128 PCLK_DBG_L_DIV_SHIFT = 0x8, 129 PCLK_DBG_L_DIV_MASK = 0x1f << PCLK_DBG_L_DIV_SHIFT, 130 ATCLK_CORE_L_DIV_SHIFT = 0, 131 ATCLK_CORE_L_DIV_MASK = 0x1f << ATCLK_CORE_L_DIV_SHIFT, 132 133 /* CLKSEL_CON14 */ 134 PCLK_PERIHP_DIV_CON_SHIFT = 12, 135 PCLK_PERIHP_DIV_CON_MASK = 0x7 << PCLK_PERIHP_DIV_CON_SHIFT, 136 HCLK_PERIHP_DIV_CON_SHIFT = 8, 137 HCLK_PERIHP_DIV_CON_MASK = 3 << HCLK_PERIHP_DIV_CON_SHIFT, 138 ACLK_PERIHP_PLL_SEL_SHIFT = 7, 139 ACLK_PERIHP_PLL_SEL_MASK = 1 << ACLK_PERIHP_PLL_SEL_SHIFT, 140 ACLK_PERIHP_PLL_SEL_CPLL = 0, 141 ACLK_PERIHP_PLL_SEL_GPLL = 1, 142 ACLK_PERIHP_DIV_CON_SHIFT = 0, 143 ACLK_PERIHP_DIV_CON_MASK = 0x1f, 144 145 /* CLKSEL_CON21 */ 146 ACLK_EMMC_PLL_SEL_SHIFT = 7, 147 ACLK_EMMC_PLL_SEL_MASK = 0x1 << ACLK_EMMC_PLL_SEL_SHIFT, 148 ACLK_EMMC_PLL_SEL_GPLL = 0x1, 149 ACLK_EMMC_DIV_CON_SHIFT = 0, 150 ACLK_EMMC_DIV_CON_MASK = 0x1f, 151 152 /* CLKSEL_CON22 */ 153 CLK_EMMC_PLL_SHIFT = 8, 154 CLK_EMMC_PLL_MASK = 0x7 << CLK_EMMC_PLL_SHIFT, 155 CLK_EMMC_PLL_SEL_GPLL = 0x1, 156 CLK_EMMC_PLL_SEL_24M = 0x5, 157 CLK_EMMC_DIV_CON_SHIFT = 0, 158 CLK_EMMC_DIV_CON_MASK = 0x7f << CLK_EMMC_DIV_CON_SHIFT, 159 160 /* CLKSEL_CON23 */ 161 PCLK_PERILP0_DIV_CON_SHIFT = 12, 162 PCLK_PERILP0_DIV_CON_MASK = 0x7 << PCLK_PERILP0_DIV_CON_SHIFT, 163 HCLK_PERILP0_DIV_CON_SHIFT = 8, 164 HCLK_PERILP0_DIV_CON_MASK = 3 << HCLK_PERILP0_DIV_CON_SHIFT, 165 ACLK_PERILP0_PLL_SEL_SHIFT = 7, 166 ACLK_PERILP0_PLL_SEL_MASK = 1 << ACLK_PERILP0_PLL_SEL_SHIFT, 167 ACLK_PERILP0_PLL_SEL_CPLL = 0, 168 ACLK_PERILP0_PLL_SEL_GPLL = 1, 169 ACLK_PERILP0_DIV_CON_SHIFT = 0, 170 ACLK_PERILP0_DIV_CON_MASK = 0x1f, 171 172 /* CLKSEL_CON25 */ 173 PCLK_PERILP1_DIV_CON_SHIFT = 8, 174 PCLK_PERILP1_DIV_CON_MASK = 0x7 << PCLK_PERILP1_DIV_CON_SHIFT, 175 HCLK_PERILP1_PLL_SEL_SHIFT = 7, 176 HCLK_PERILP1_PLL_SEL_MASK = 1 << HCLK_PERILP1_PLL_SEL_SHIFT, 177 HCLK_PERILP1_PLL_SEL_CPLL = 0, 178 HCLK_PERILP1_PLL_SEL_GPLL = 1, 179 HCLK_PERILP1_DIV_CON_SHIFT = 0, 180 HCLK_PERILP1_DIV_CON_MASK = 0x1f, 181 182 /* CLKSEL_CON26 */ 183 CLK_SARADC_DIV_CON_SHIFT = 8, 184 CLK_SARADC_DIV_CON_MASK = 0xff << CLK_SARADC_DIV_CON_SHIFT, 185 186 /* CLKSEL_CON27 */ 187 CLK_TSADC_SEL_X24M = 0x0, 188 CLK_TSADC_SEL_SHIFT = 15, 189 CLK_TSADC_SEL_MASK = 1 << CLK_TSADC_SEL_SHIFT, 190 CLK_TSADC_DIV_CON_SHIFT = 0, 191 CLK_TSADC_DIV_CON_MASK = 0x3ff, 192 193 /* CLKSEL_CON47 & CLKSEL_CON48 */ 194 ACLK_VOP_PLL_SEL_SHIFT = 6, 195 ACLK_VOP_PLL_SEL_MASK = 0x3 << ACLK_VOP_PLL_SEL_SHIFT, 196 ACLK_VOP_PLL_SEL_CPLL = 0x1, 197 ACLK_VOP_DIV_CON_SHIFT = 0, 198 ACLK_VOP_DIV_CON_MASK = 0x1f << ACLK_VOP_DIV_CON_SHIFT, 199 200 /* CLKSEL_CON49 & CLKSEL_CON50 */ 201 DCLK_VOP_DCLK_SEL_SHIFT = 11, 202 DCLK_VOP_DCLK_SEL_MASK = 1 << DCLK_VOP_DCLK_SEL_SHIFT, 203 DCLK_VOP_DCLK_SEL_DIVOUT = 0, 204 DCLK_VOP_PLL_SEL_SHIFT = 8, 205 DCLK_VOP_PLL_SEL_MASK = 3 << DCLK_VOP_PLL_SEL_SHIFT, 206 DCLK_VOP_PLL_SEL_VPLL = 0, 207 DCLK_VOP_DIV_CON_MASK = 0xff, 208 DCLK_VOP_DIV_CON_SHIFT = 0, 209 210 /* CLKSEL_CON58 */ 211 CLK_SPI_PLL_SEL_WIDTH = 1, 212 CLK_SPI_PLL_SEL_MASK = ((1 < CLK_SPI_PLL_SEL_WIDTH) - 1), 213 CLK_SPI_PLL_SEL_CPLL = 0, 214 CLK_SPI_PLL_SEL_GPLL = 1, 215 CLK_SPI_PLL_DIV_CON_WIDTH = 7, 216 CLK_SPI_PLL_DIV_CON_MASK = ((1 << CLK_SPI_PLL_DIV_CON_WIDTH) - 1), 217 218 CLK_SPI5_PLL_DIV_CON_SHIFT = 8, 219 CLK_SPI5_PLL_SEL_SHIFT = 15, 220 221 /* CLKSEL_CON59 */ 222 CLK_SPI1_PLL_SEL_SHIFT = 15, 223 CLK_SPI1_PLL_DIV_CON_SHIFT = 8, 224 CLK_SPI0_PLL_SEL_SHIFT = 7, 225 CLK_SPI0_PLL_DIV_CON_SHIFT = 0, 226 227 /* CLKSEL_CON60 */ 228 CLK_SPI4_PLL_SEL_SHIFT = 15, 229 CLK_SPI4_PLL_DIV_CON_SHIFT = 8, 230 CLK_SPI2_PLL_SEL_SHIFT = 7, 231 CLK_SPI2_PLL_DIV_CON_SHIFT = 0, 232 233 /* CLKSEL_CON61 */ 234 CLK_I2C_PLL_SEL_MASK = 1, 235 CLK_I2C_PLL_SEL_CPLL = 0, 236 CLK_I2C_PLL_SEL_GPLL = 1, 237 CLK_I2C5_PLL_SEL_SHIFT = 15, 238 CLK_I2C5_DIV_CON_SHIFT = 8, 239 CLK_I2C1_PLL_SEL_SHIFT = 7, 240 CLK_I2C1_DIV_CON_SHIFT = 0, 241 242 /* CLKSEL_CON62 */ 243 CLK_I2C6_PLL_SEL_SHIFT = 15, 244 CLK_I2C6_DIV_CON_SHIFT = 8, 245 CLK_I2C2_PLL_SEL_SHIFT = 7, 246 CLK_I2C2_DIV_CON_SHIFT = 0, 247 248 /* CLKSEL_CON63 */ 249 CLK_I2C7_PLL_SEL_SHIFT = 15, 250 CLK_I2C7_DIV_CON_SHIFT = 8, 251 CLK_I2C3_PLL_SEL_SHIFT = 7, 252 CLK_I2C3_DIV_CON_SHIFT = 0, 253 254 /* CRU_SOFTRST_CON4 */ 255 RESETN_DDR0_REQ_SHIFT = 8, 256 RESETN_DDR0_REQ_MASK = 1 << RESETN_DDR0_REQ_SHIFT, 257 RESETN_DDRPHY0_REQ_SHIFT = 9, 258 RESETN_DDRPHY0_REQ_MASK = 1 << RESETN_DDRPHY0_REQ_SHIFT, 259 RESETN_DDR1_REQ_SHIFT = 12, 260 RESETN_DDR1_REQ_MASK = 1 << RESETN_DDR1_REQ_SHIFT, 261 RESETN_DDRPHY1_REQ_SHIFT = 13, 262 RESETN_DDRPHY1_REQ_MASK = 1 << RESETN_DDRPHY1_REQ_SHIFT, 263 }; 264 265 #define VCO_MAX_KHZ (3200 * (MHz / KHz)) 266 #define VCO_MIN_KHZ (800 * (MHz / KHz)) 267 #define OUTPUT_MAX_KHZ (3200 * (MHz / KHz)) 268 #define OUTPUT_MIN_KHZ (16 * (MHz / KHz)) 269 270 /* 271 * the div restructions of pll in integer mode, these are defined in 272 * * CRU_*PLL_CON0 or PMUCRU_*PLL_CON0 273 */ 274 #define PLL_DIV_MIN 16 275 #define PLL_DIV_MAX 3200 276 277 /* 278 * How to calculate the PLL(from TRM V0.3 Part 1 Page 63): 279 * Formulas also embedded within the Fractional PLL Verilog model: 280 * If DSMPD = 1 (DSM is disabled, "integer mode") 281 * FOUTVCO = FREF / REFDIV * FBDIV 282 * FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2 283 * Where: 284 * FOUTVCO = Fractional PLL non-divided output frequency 285 * FOUTPOSTDIV = Fractional PLL divided output frequency 286 * (output of second post divider) 287 * FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input) 288 * REFDIV = Fractional PLL input reference clock divider 289 * FBDIV = Integer value programmed into feedback divide 290 * 291 */ 292 static void rkclk_set_pll(u32 *pll_con, const struct pll_div *div) 293 { 294 /* All 8 PLLs have same VCO and output frequency range restrictions. */ 295 u32 vco_khz = OSC_HZ / 1000 * div->fbdiv / div->refdiv; 296 u32 output_khz = vco_khz / div->postdiv1 / div->postdiv2; 297 298 debug("PLL at %p: fbdiv=%d, refdiv=%d, postdiv1=%d, " 299 "postdiv2=%d, vco=%u khz, output=%u khz\n", 300 pll_con, div->fbdiv, div->refdiv, div->postdiv1, 301 div->postdiv2, vco_khz, output_khz); 302 assert(vco_khz >= VCO_MIN_KHZ && vco_khz <= VCO_MAX_KHZ && 303 output_khz >= OUTPUT_MIN_KHZ && output_khz <= OUTPUT_MAX_KHZ && 304 div->fbdiv >= PLL_DIV_MIN && div->fbdiv <= PLL_DIV_MAX); 305 306 /* 307 * When power on or changing PLL setting, 308 * we must force PLL into slow mode to ensure output stable clock. 309 */ 310 rk_clrsetreg(&pll_con[3], PLL_MODE_MASK, 311 PLL_MODE_SLOW << PLL_MODE_SHIFT); 312 313 /* use integer mode */ 314 rk_clrsetreg(&pll_con[3], PLL_DSMPD_MASK, 315 PLL_INTEGER_MODE << PLL_DSMPD_SHIFT); 316 317 rk_clrsetreg(&pll_con[0], PLL_FBDIV_MASK, 318 div->fbdiv << PLL_FBDIV_SHIFT); 319 rk_clrsetreg(&pll_con[1], 320 PLL_POSTDIV2_MASK | PLL_POSTDIV1_MASK | 321 PLL_REFDIV_MASK | PLL_REFDIV_SHIFT, 322 (div->postdiv2 << PLL_POSTDIV2_SHIFT) | 323 (div->postdiv1 << PLL_POSTDIV1_SHIFT) | 324 (div->refdiv << PLL_REFDIV_SHIFT)); 325 326 /* waiting for pll lock */ 327 while (!(readl(&pll_con[2]) & (1 << PLL_LOCK_STATUS_SHIFT))) 328 udelay(1); 329 330 /* pll enter normal mode */ 331 rk_clrsetreg(&pll_con[3], PLL_MODE_MASK, 332 PLL_MODE_NORM << PLL_MODE_SHIFT); 333 } 334 335 static int pll_para_config(u32 freq_hz, struct pll_div *div) 336 { 337 u32 ref_khz = OSC_HZ / KHz, refdiv, fbdiv = 0; 338 u32 postdiv1, postdiv2 = 1; 339 u32 fref_khz; 340 u32 diff_khz, best_diff_khz; 341 const u32 max_refdiv = 63, max_fbdiv = 3200, min_fbdiv = 16; 342 const u32 max_postdiv1 = 7, max_postdiv2 = 7; 343 u32 vco_khz; 344 u32 freq_khz = freq_hz / KHz; 345 346 if (!freq_hz) { 347 printf("%s: the frequency can't be 0 Hz\n", __func__); 348 return -1; 349 } 350 351 postdiv1 = DIV_ROUND_UP(VCO_MIN_KHZ, freq_khz); 352 if (postdiv1 > max_postdiv1) { 353 postdiv2 = DIV_ROUND_UP(postdiv1, max_postdiv1); 354 postdiv1 = DIV_ROUND_UP(postdiv1, postdiv2); 355 } 356 357 vco_khz = freq_khz * postdiv1 * postdiv2; 358 359 if (vco_khz < VCO_MIN_KHZ || vco_khz > VCO_MAX_KHZ || 360 postdiv2 > max_postdiv2) { 361 printf("%s: Cannot find out a supported VCO" 362 " for Frequency (%uHz).\n", __func__, freq_hz); 363 return -1; 364 } 365 366 div->postdiv1 = postdiv1; 367 div->postdiv2 = postdiv2; 368 369 best_diff_khz = vco_khz; 370 for (refdiv = 1; refdiv < max_refdiv && best_diff_khz; refdiv++) { 371 fref_khz = ref_khz / refdiv; 372 373 fbdiv = vco_khz / fref_khz; 374 if ((fbdiv >= max_fbdiv) || (fbdiv <= min_fbdiv)) 375 continue; 376 diff_khz = vco_khz - fbdiv * fref_khz; 377 if (fbdiv + 1 < max_fbdiv && diff_khz > fref_khz / 2) { 378 fbdiv++; 379 diff_khz = fref_khz - diff_khz; 380 } 381 382 if (diff_khz >= best_diff_khz) 383 continue; 384 385 best_diff_khz = diff_khz; 386 div->refdiv = refdiv; 387 div->fbdiv = fbdiv; 388 } 389 390 if (best_diff_khz > 4 * (MHz/KHz)) { 391 printf("%s: Failed to match output frequency %u, " 392 "difference is %u Hz,exceed 4MHZ\n", __func__, freq_hz, 393 best_diff_khz * KHz); 394 return -1; 395 } 396 return 0; 397 } 398 399 #ifdef CONFIG_SPL_BUILD 400 static void rkclk_init(struct rk3399_cru *cru) 401 { 402 u32 aclk_div; 403 u32 hclk_div; 404 u32 pclk_div; 405 406 /* 407 * some cru registers changed by bootrom, we'd better reset them to 408 * reset/default values described in TRM to avoid confusion in kernel. 409 * Please consider these three lines as a fix of bootrom bug. 410 */ 411 rk_clrsetreg(&cru->clksel_con[12], 0xffff, 0x4101); 412 rk_clrsetreg(&cru->clksel_con[19], 0xffff, 0x033f); 413 rk_clrsetreg(&cru->clksel_con[56], 0x0003, 0x0003); 414 415 /* configure gpll cpll */ 416 rkclk_set_pll(&cru->gpll_con[0], &gpll_init_cfg); 417 rkclk_set_pll(&cru->cpll_con[0], &cpll_init_cfg); 418 419 /* configure perihp aclk, hclk, pclk */ 420 aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1; 421 assert((aclk_div + 1) * PERIHP_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f); 422 423 hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1; 424 assert((hclk_div + 1) * PERIHP_HCLK_HZ == 425 PERIHP_ACLK_HZ && (hclk_div < 0x4)); 426 427 pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1; 428 assert((pclk_div + 1) * PERIHP_PCLK_HZ == 429 PERIHP_ACLK_HZ && (pclk_div < 0x7)); 430 431 rk_clrsetreg(&cru->clksel_con[14], 432 PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK | 433 ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK, 434 pclk_div << PCLK_PERIHP_DIV_CON_SHIFT | 435 hclk_div << HCLK_PERIHP_DIV_CON_SHIFT | 436 ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT | 437 aclk_div << ACLK_PERIHP_DIV_CON_SHIFT); 438 439 /* configure perilp0 aclk, hclk, pclk */ 440 aclk_div = GPLL_HZ / PERILP0_ACLK_HZ - 1; 441 assert((aclk_div + 1) * PERILP0_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f); 442 443 hclk_div = PERILP0_ACLK_HZ / PERILP0_HCLK_HZ - 1; 444 assert((hclk_div + 1) * PERILP0_HCLK_HZ == 445 PERILP0_ACLK_HZ && (hclk_div < 0x4)); 446 447 pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1; 448 assert((pclk_div + 1) * PERILP0_PCLK_HZ == 449 PERILP0_ACLK_HZ && (pclk_div < 0x7)); 450 451 rk_clrsetreg(&cru->clksel_con[23], 452 PCLK_PERILP0_DIV_CON_MASK | HCLK_PERILP0_DIV_CON_MASK | 453 ACLK_PERILP0_PLL_SEL_MASK | ACLK_PERILP0_DIV_CON_MASK, 454 pclk_div << PCLK_PERILP0_DIV_CON_SHIFT | 455 hclk_div << HCLK_PERILP0_DIV_CON_SHIFT | 456 ACLK_PERILP0_PLL_SEL_GPLL << ACLK_PERILP0_PLL_SEL_SHIFT | 457 aclk_div << ACLK_PERILP0_DIV_CON_SHIFT); 458 459 /* perilp1 hclk select gpll as source */ 460 hclk_div = GPLL_HZ / PERILP1_HCLK_HZ - 1; 461 assert((hclk_div + 1) * PERILP1_HCLK_HZ == 462 GPLL_HZ && (hclk_div < 0x1f)); 463 464 pclk_div = PERILP1_HCLK_HZ / PERILP1_HCLK_HZ - 1; 465 assert((pclk_div + 1) * PERILP1_HCLK_HZ == 466 PERILP1_HCLK_HZ && (hclk_div < 0x7)); 467 468 rk_clrsetreg(&cru->clksel_con[25], 469 PCLK_PERILP1_DIV_CON_MASK | HCLK_PERILP1_DIV_CON_MASK | 470 HCLK_PERILP1_PLL_SEL_MASK, 471 pclk_div << PCLK_PERILP1_DIV_CON_SHIFT | 472 hclk_div << HCLK_PERILP1_DIV_CON_SHIFT | 473 HCLK_PERILP1_PLL_SEL_GPLL << HCLK_PERILP1_PLL_SEL_SHIFT); 474 } 475 #endif 476 477 void rk3399_configure_cpu(struct rk3399_cru *cru, 478 enum apll_l_frequencies apll_l_freq) 479 { 480 u32 aclkm_div; 481 u32 pclk_dbg_div; 482 u32 atclk_div; 483 484 rkclk_set_pll(&cru->apll_l_con[0], apll_l_cfgs[apll_l_freq]); 485 486 aclkm_div = APLL_HZ / ACLKM_CORE_HZ - 1; 487 assert((aclkm_div + 1) * ACLKM_CORE_HZ == APLL_HZ && 488 aclkm_div < 0x1f); 489 490 pclk_dbg_div = APLL_HZ / PCLK_DBG_HZ - 1; 491 assert((pclk_dbg_div + 1) * PCLK_DBG_HZ == APLL_HZ && 492 pclk_dbg_div < 0x1f); 493 494 atclk_div = APLL_HZ / ATCLK_CORE_HZ - 1; 495 assert((atclk_div + 1) * ATCLK_CORE_HZ == APLL_HZ && 496 atclk_div < 0x1f); 497 498 rk_clrsetreg(&cru->clksel_con[0], 499 ACLKM_CORE_L_DIV_CON_MASK | CLK_CORE_L_PLL_SEL_MASK | 500 CLK_CORE_L_DIV_MASK, 501 aclkm_div << ACLKM_CORE_L_DIV_CON_SHIFT | 502 CLK_CORE_L_PLL_SEL_ALPLL << CLK_CORE_L_PLL_SEL_SHIFT | 503 0 << CLK_CORE_L_DIV_SHIFT); 504 505 rk_clrsetreg(&cru->clksel_con[1], 506 PCLK_DBG_L_DIV_MASK | ATCLK_CORE_L_DIV_MASK, 507 pclk_dbg_div << PCLK_DBG_L_DIV_SHIFT | 508 atclk_div << ATCLK_CORE_L_DIV_SHIFT); 509 } 510 #define I2C_CLK_REG_MASK(bus) \ 511 (I2C_DIV_CON_MASK << \ 512 CLK_I2C ##bus## _DIV_CON_SHIFT | \ 513 CLK_I2C_PLL_SEL_MASK << \ 514 CLK_I2C ##bus## _PLL_SEL_SHIFT) 515 516 #define I2C_CLK_REG_VALUE(bus, clk_div) \ 517 ((clk_div - 1) << \ 518 CLK_I2C ##bus## _DIV_CON_SHIFT | \ 519 CLK_I2C_PLL_SEL_GPLL << \ 520 CLK_I2C ##bus## _PLL_SEL_SHIFT) 521 522 #define I2C_CLK_DIV_VALUE(con, bus) \ 523 (con >> CLK_I2C ##bus## _DIV_CON_SHIFT) & \ 524 I2C_DIV_CON_MASK; 525 526 #define I2C_PMUCLK_REG_MASK(bus) \ 527 (I2C_DIV_CON_MASK << \ 528 CLK_I2C ##bus## _DIV_CON_SHIFT) 529 530 #define I2C_PMUCLK_REG_VALUE(bus, clk_div) \ 531 ((clk_div - 1) << \ 532 CLK_I2C ##bus## _DIV_CON_SHIFT) 533 534 static ulong rk3399_i2c_get_clk(struct rk3399_cru *cru, ulong clk_id) 535 { 536 u32 div, con; 537 538 switch (clk_id) { 539 case SCLK_I2C1: 540 con = readl(&cru->clksel_con[61]); 541 div = I2C_CLK_DIV_VALUE(con, 1); 542 break; 543 case SCLK_I2C2: 544 con = readl(&cru->clksel_con[62]); 545 div = I2C_CLK_DIV_VALUE(con, 2); 546 break; 547 case SCLK_I2C3: 548 con = readl(&cru->clksel_con[63]); 549 div = I2C_CLK_DIV_VALUE(con, 3); 550 break; 551 case SCLK_I2C5: 552 con = readl(&cru->clksel_con[61]); 553 div = I2C_CLK_DIV_VALUE(con, 5); 554 break; 555 case SCLK_I2C6: 556 con = readl(&cru->clksel_con[62]); 557 div = I2C_CLK_DIV_VALUE(con, 6); 558 break; 559 case SCLK_I2C7: 560 con = readl(&cru->clksel_con[63]); 561 div = I2C_CLK_DIV_VALUE(con, 7); 562 break; 563 default: 564 printf("do not support this i2c bus\n"); 565 return -EINVAL; 566 } 567 568 return DIV_TO_RATE(GPLL_HZ, div); 569 } 570 571 static ulong rk3399_i2c_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz) 572 { 573 int src_clk_div; 574 575 /* i2c0,4,8 src clock from ppll, i2c1,2,3,5,6,7 src clock from gpll*/ 576 src_clk_div = GPLL_HZ / hz; 577 assert(src_clk_div - 1 < 127); 578 579 switch (clk_id) { 580 case SCLK_I2C1: 581 rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(1), 582 I2C_CLK_REG_VALUE(1, src_clk_div)); 583 break; 584 case SCLK_I2C2: 585 rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(2), 586 I2C_CLK_REG_VALUE(2, src_clk_div)); 587 break; 588 case SCLK_I2C3: 589 rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(3), 590 I2C_CLK_REG_VALUE(3, src_clk_div)); 591 break; 592 case SCLK_I2C5: 593 rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(5), 594 I2C_CLK_REG_VALUE(5, src_clk_div)); 595 break; 596 case SCLK_I2C6: 597 rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(6), 598 I2C_CLK_REG_VALUE(6, src_clk_div)); 599 break; 600 case SCLK_I2C7: 601 rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(7), 602 I2C_CLK_REG_VALUE(7, src_clk_div)); 603 break; 604 default: 605 printf("do not support this i2c bus\n"); 606 return -EINVAL; 607 } 608 609 return rk3399_i2c_get_clk(cru, clk_id); 610 } 611 612 /* 613 * RK3399 SPI clocks have a common divider-width (7 bits) and a single bit 614 * to select either CPLL or GPLL as the clock-parent. The location within 615 * the enclosing CLKSEL_CON (i.e. div_shift and sel_shift) are variable. 616 */ 617 618 struct spi_clkreg { 619 uint8_t reg; /* CLKSEL_CON[reg] register in CRU */ 620 uint8_t div_shift; 621 uint8_t sel_shift; 622 }; 623 624 /* 625 * The entries are numbered relative to their offset from SCLK_SPI0. 626 * 627 * Note that SCLK_SPI3 (which is configured via PMUCRU and requires different 628 * logic is not supported). 629 */ 630 static const struct spi_clkreg spi_clkregs[] = { 631 [0] = { .reg = 59, 632 .div_shift = CLK_SPI0_PLL_DIV_CON_SHIFT, 633 .sel_shift = CLK_SPI0_PLL_SEL_SHIFT, }, 634 [1] = { .reg = 59, 635 .div_shift = CLK_SPI1_PLL_DIV_CON_SHIFT, 636 .sel_shift = CLK_SPI1_PLL_SEL_SHIFT, }, 637 [2] = { .reg = 60, 638 .div_shift = CLK_SPI2_PLL_DIV_CON_SHIFT, 639 .sel_shift = CLK_SPI2_PLL_SEL_SHIFT, }, 640 [3] = { .reg = 60, 641 .div_shift = CLK_SPI4_PLL_DIV_CON_SHIFT, 642 .sel_shift = CLK_SPI4_PLL_SEL_SHIFT, }, 643 [4] = { .reg = 58, 644 .div_shift = CLK_SPI5_PLL_DIV_CON_SHIFT, 645 .sel_shift = CLK_SPI5_PLL_SEL_SHIFT, }, 646 }; 647 648 static inline u32 extract_bits(u32 val, unsigned width, unsigned shift) 649 { 650 return (val >> shift) & ((1 << width) - 1); 651 } 652 653 static ulong rk3399_spi_get_clk(struct rk3399_cru *cru, ulong clk_id) 654 { 655 const struct spi_clkreg *spiclk = NULL; 656 u32 div, val; 657 658 switch (clk_id) { 659 case SCLK_SPI0 ... SCLK_SPI5: 660 spiclk = &spi_clkregs[clk_id - SCLK_SPI0]; 661 break; 662 663 default: 664 error("%s: SPI clk-id %ld not supported\n", __func__, clk_id); 665 return -EINVAL; 666 } 667 668 val = readl(&cru->clksel_con[spiclk->reg]); 669 div = extract_bits(val, CLK_SPI_PLL_DIV_CON_WIDTH, spiclk->div_shift); 670 671 return DIV_TO_RATE(GPLL_HZ, div); 672 } 673 674 static ulong rk3399_spi_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz) 675 { 676 const struct spi_clkreg *spiclk = NULL; 677 int src_clk_div; 678 679 src_clk_div = RATE_TO_DIV(GPLL_HZ, hz); 680 assert(src_clk_div < 127); 681 682 switch (clk_id) { 683 case SCLK_SPI1 ... SCLK_SPI5: 684 spiclk = &spi_clkregs[clk_id - SCLK_SPI0]; 685 break; 686 687 default: 688 error("%s: SPI clk-id %ld not supported\n", __func__, clk_id); 689 return -EINVAL; 690 } 691 692 rk_clrsetreg(&cru->clksel_con[spiclk->reg], 693 ((CLK_SPI_PLL_DIV_CON_MASK << spiclk->div_shift) | 694 (CLK_SPI_PLL_SEL_GPLL << spiclk->sel_shift)), 695 ((src_clk_div << spiclk->div_shift) | 696 (CLK_SPI_PLL_SEL_GPLL << spiclk->sel_shift))); 697 698 return rk3399_spi_get_clk(cru, clk_id); 699 } 700 701 static ulong rk3399_vop_set_clk(struct rk3399_cru *cru, ulong clk_id, u32 hz) 702 { 703 struct pll_div vpll_config = {0}; 704 int aclk_vop = 198*MHz; 705 void *aclkreg_addr, *dclkreg_addr; 706 u32 div; 707 708 switch (clk_id) { 709 case DCLK_VOP0: 710 aclkreg_addr = &cru->clksel_con[47]; 711 dclkreg_addr = &cru->clksel_con[49]; 712 break; 713 case DCLK_VOP1: 714 aclkreg_addr = &cru->clksel_con[48]; 715 dclkreg_addr = &cru->clksel_con[50]; 716 break; 717 default: 718 return -EINVAL; 719 } 720 /* vop aclk source clk: cpll */ 721 div = CPLL_HZ / aclk_vop; 722 assert(div - 1 < 32); 723 724 rk_clrsetreg(aclkreg_addr, 725 ACLK_VOP_PLL_SEL_MASK | ACLK_VOP_DIV_CON_MASK, 726 ACLK_VOP_PLL_SEL_CPLL << ACLK_VOP_PLL_SEL_SHIFT | 727 (div - 1) << ACLK_VOP_DIV_CON_SHIFT); 728 729 /* vop dclk source from vpll, and equals to vpll(means div == 1) */ 730 if (pll_para_config(hz, &vpll_config)) 731 return -1; 732 733 rkclk_set_pll(&cru->vpll_con[0], &vpll_config); 734 735 rk_clrsetreg(dclkreg_addr, 736 DCLK_VOP_DCLK_SEL_MASK | DCLK_VOP_PLL_SEL_MASK| 737 DCLK_VOP_DIV_CON_MASK, 738 DCLK_VOP_DCLK_SEL_DIVOUT << DCLK_VOP_DCLK_SEL_SHIFT | 739 DCLK_VOP_PLL_SEL_VPLL << DCLK_VOP_PLL_SEL_SHIFT | 740 (1 - 1) << DCLK_VOP_DIV_CON_SHIFT); 741 742 return hz; 743 } 744 745 static ulong rk3399_mmc_get_clk(struct rk3399_cru *cru, uint clk_id) 746 { 747 u32 div, con; 748 749 switch (clk_id) { 750 case HCLK_SDMMC: 751 case SCLK_SDMMC: 752 con = readl(&cru->clksel_con[16]); 753 break; 754 case SCLK_EMMC: 755 con = readl(&cru->clksel_con[21]); 756 break; 757 default: 758 return -EINVAL; 759 } 760 div = (con & CLK_EMMC_DIV_CON_MASK) >> CLK_EMMC_DIV_CON_SHIFT; 761 762 if ((con & CLK_EMMC_PLL_MASK) >> CLK_EMMC_PLL_SHIFT 763 == CLK_EMMC_PLL_SEL_24M) 764 return DIV_TO_RATE(24*1000*1000, div); 765 else 766 return DIV_TO_RATE(GPLL_HZ, div); 767 } 768 769 static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru, 770 ulong clk_id, ulong set_rate) 771 { 772 int src_clk_div; 773 int aclk_emmc = 198*MHz; 774 775 switch (clk_id) { 776 case HCLK_SDMMC: 777 case SCLK_SDMMC: 778 /* Select clk_sdmmc source from GPLL by default */ 779 src_clk_div = GPLL_HZ / set_rate; 780 781 if (src_clk_div > 127) { 782 /* use 24MHz source for 400KHz clock */ 783 src_clk_div = 24*1000*1000 / set_rate; 784 rk_clrsetreg(&cru->clksel_con[16], 785 CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK, 786 CLK_EMMC_PLL_SEL_24M << CLK_EMMC_PLL_SHIFT | 787 (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT); 788 } else { 789 rk_clrsetreg(&cru->clksel_con[16], 790 CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK, 791 CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT | 792 (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT); 793 } 794 break; 795 case SCLK_EMMC: 796 /* Select aclk_emmc source from GPLL */ 797 src_clk_div = GPLL_HZ / aclk_emmc; 798 assert(src_clk_div - 1 < 31); 799 800 rk_clrsetreg(&cru->clksel_con[21], 801 ACLK_EMMC_PLL_SEL_MASK | ACLK_EMMC_DIV_CON_MASK, 802 ACLK_EMMC_PLL_SEL_GPLL << ACLK_EMMC_PLL_SEL_SHIFT | 803 (src_clk_div - 1) << ACLK_EMMC_DIV_CON_SHIFT); 804 805 /* Select clk_emmc source from GPLL too */ 806 src_clk_div = GPLL_HZ / set_rate; 807 assert(src_clk_div - 1 < 127); 808 809 rk_clrsetreg(&cru->clksel_con[22], 810 CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK, 811 CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT | 812 (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT); 813 break; 814 default: 815 return -EINVAL; 816 } 817 return rk3399_mmc_get_clk(cru, clk_id); 818 } 819 820 #define PMUSGRF_DDR_RGN_CON16 0xff330040 821 static ulong rk3399_ddr_set_clk(struct rk3399_cru *cru, 822 ulong set_rate) 823 { 824 struct pll_div dpll_cfg; 825 826 /* IC ECO bug, need to set this register */ 827 writel(0xc000c000, PMUSGRF_DDR_RGN_CON16); 828 829 /* clk_ddrc == DPLL = 24MHz / refdiv * fbdiv / postdiv1 / postdiv2 */ 830 switch (set_rate) { 831 case 200*MHz: 832 dpll_cfg = (struct pll_div) 833 {.refdiv = 1, .fbdiv = 50, .postdiv1 = 6, .postdiv2 = 1}; 834 break; 835 case 300*MHz: 836 dpll_cfg = (struct pll_div) 837 {.refdiv = 2, .fbdiv = 100, .postdiv1 = 4, .postdiv2 = 1}; 838 break; 839 case 666*MHz: 840 dpll_cfg = (struct pll_div) 841 {.refdiv = 2, .fbdiv = 111, .postdiv1 = 2, .postdiv2 = 1}; 842 break; 843 case 800*MHz: 844 dpll_cfg = (struct pll_div) 845 {.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1}; 846 break; 847 case 933*MHz: 848 dpll_cfg = (struct pll_div) 849 {.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1}; 850 break; 851 default: 852 error("Unsupported SDRAM frequency!,%ld\n", set_rate); 853 } 854 rkclk_set_pll(&cru->dpll_con[0], &dpll_cfg); 855 856 return set_rate; 857 } 858 static ulong rk3399_clk_get_rate(struct clk *clk) 859 { 860 struct rk3399_clk_priv *priv = dev_get_priv(clk->dev); 861 ulong rate = 0; 862 863 switch (clk->id) { 864 case 0 ... 63: 865 return 0; 866 case HCLK_SDMMC: 867 case SCLK_SDMMC: 868 case SCLK_EMMC: 869 rate = rk3399_mmc_get_clk(priv->cru, clk->id); 870 break; 871 case SCLK_I2C1: 872 case SCLK_I2C2: 873 case SCLK_I2C3: 874 case SCLK_I2C5: 875 case SCLK_I2C6: 876 case SCLK_I2C7: 877 rate = rk3399_i2c_get_clk(priv->cru, clk->id); 878 break; 879 case SCLK_SPI0...SCLK_SPI5: 880 rate = rk3399_spi_get_clk(priv->cru, clk->id); 881 break; 882 case SCLK_UART0: 883 case SCLK_UART2: 884 return 24000000; 885 break; 886 case PCLK_HDMI_CTRL: 887 break; 888 case DCLK_VOP0: 889 case DCLK_VOP1: 890 break; 891 case PCLK_EFUSE1024NS: 892 break; 893 default: 894 return -ENOENT; 895 } 896 897 return rate; 898 } 899 900 static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate) 901 { 902 struct rk3399_clk_priv *priv = dev_get_priv(clk->dev); 903 ulong ret = 0; 904 905 switch (clk->id) { 906 case 0 ... 63: 907 return 0; 908 case HCLK_SDMMC: 909 case SCLK_SDMMC: 910 case SCLK_EMMC: 911 ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate); 912 break; 913 case SCLK_MAC: 914 /* nothing to do, as this is an external clock */ 915 ret = rate; 916 break; 917 case SCLK_I2C1: 918 case SCLK_I2C2: 919 case SCLK_I2C3: 920 case SCLK_I2C5: 921 case SCLK_I2C6: 922 case SCLK_I2C7: 923 ret = rk3399_i2c_set_clk(priv->cru, clk->id, rate); 924 break; 925 case SCLK_SPI0...SCLK_SPI5: 926 ret = rk3399_spi_set_clk(priv->cru, clk->id, rate); 927 break; 928 case PCLK_HDMI_CTRL: 929 case PCLK_VIO_GRF: 930 /* the PCLK gates for video are enabled by default */ 931 break; 932 case DCLK_VOP0: 933 case DCLK_VOP1: 934 ret = rk3399_vop_set_clk(priv->cru, clk->id, rate); 935 break; 936 case SCLK_DDRCLK: 937 ret = rk3399_ddr_set_clk(priv->cru, rate); 938 break; 939 case PCLK_EFUSE1024NS: 940 break; 941 default: 942 return -ENOENT; 943 } 944 945 return ret; 946 } 947 948 static struct clk_ops rk3399_clk_ops = { 949 .get_rate = rk3399_clk_get_rate, 950 .set_rate = rk3399_clk_set_rate, 951 }; 952 953 static int rk3399_clk_probe(struct udevice *dev) 954 { 955 #ifdef CONFIG_SPL_BUILD 956 struct rk3399_clk_priv *priv = dev_get_priv(dev); 957 958 #if CONFIG_IS_ENABLED(OF_PLATDATA) 959 struct rk3399_clk_plat *plat = dev_get_platdata(dev); 960 961 priv->cru = map_sysmem(plat->dtd.reg[1], plat->dtd.reg[3]); 962 #endif 963 rkclk_init(priv->cru); 964 #endif 965 return 0; 966 } 967 968 static int rk3399_clk_ofdata_to_platdata(struct udevice *dev) 969 { 970 #if !CONFIG_IS_ENABLED(OF_PLATDATA) 971 struct rk3399_clk_priv *priv = dev_get_priv(dev); 972 973 priv->cru = (struct rk3399_cru *)dev_get_addr(dev); 974 #endif 975 return 0; 976 } 977 978 static int rk3399_clk_bind(struct udevice *dev) 979 { 980 int ret; 981 982 /* The reset driver does not have a device node, so bind it here */ 983 ret = device_bind_driver(gd->dm_root, "rk3399_sysreset", "reset", &dev); 984 if (ret) 985 printf("Warning: No RK3399 reset driver: ret=%d\n", ret); 986 987 return 0; 988 } 989 990 static const struct udevice_id rk3399_clk_ids[] = { 991 { .compatible = "rockchip,rk3399-cru" }, 992 { } 993 }; 994 995 U_BOOT_DRIVER(clk_rk3399) = { 996 .name = "rockchip_rk3399_cru", 997 .id = UCLASS_CLK, 998 .of_match = rk3399_clk_ids, 999 .priv_auto_alloc_size = sizeof(struct rk3399_clk_priv), 1000 .ofdata_to_platdata = rk3399_clk_ofdata_to_platdata, 1001 .ops = &rk3399_clk_ops, 1002 .bind = rk3399_clk_bind, 1003 .probe = rk3399_clk_probe, 1004 #if CONFIG_IS_ENABLED(OF_PLATDATA) 1005 .platdata_auto_alloc_size = sizeof(struct rk3399_clk_plat), 1006 #endif 1007 }; 1008 1009 static ulong rk3399_i2c_get_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id) 1010 { 1011 u32 div, con; 1012 1013 switch (clk_id) { 1014 case SCLK_I2C0_PMU: 1015 con = readl(&pmucru->pmucru_clksel[2]); 1016 div = I2C_CLK_DIV_VALUE(con, 0); 1017 break; 1018 case SCLK_I2C4_PMU: 1019 con = readl(&pmucru->pmucru_clksel[3]); 1020 div = I2C_CLK_DIV_VALUE(con, 4); 1021 break; 1022 case SCLK_I2C8_PMU: 1023 con = readl(&pmucru->pmucru_clksel[2]); 1024 div = I2C_CLK_DIV_VALUE(con, 8); 1025 break; 1026 default: 1027 printf("do not support this i2c bus\n"); 1028 return -EINVAL; 1029 } 1030 1031 return DIV_TO_RATE(PPLL_HZ, div); 1032 } 1033 1034 static ulong rk3399_i2c_set_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id, 1035 uint hz) 1036 { 1037 int src_clk_div; 1038 1039 src_clk_div = PPLL_HZ / hz; 1040 assert(src_clk_div - 1 < 127); 1041 1042 switch (clk_id) { 1043 case SCLK_I2C0_PMU: 1044 rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(0), 1045 I2C_PMUCLK_REG_VALUE(0, src_clk_div)); 1046 break; 1047 case SCLK_I2C4_PMU: 1048 rk_clrsetreg(&pmucru->pmucru_clksel[3], I2C_PMUCLK_REG_MASK(4), 1049 I2C_PMUCLK_REG_VALUE(4, src_clk_div)); 1050 break; 1051 case SCLK_I2C8_PMU: 1052 rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(8), 1053 I2C_PMUCLK_REG_VALUE(8, src_clk_div)); 1054 break; 1055 default: 1056 printf("do not support this i2c bus\n"); 1057 return -EINVAL; 1058 } 1059 1060 return DIV_TO_RATE(PPLL_HZ, src_clk_div); 1061 } 1062 1063 static ulong rk3399_pwm_get_clk(struct rk3399_pmucru *pmucru) 1064 { 1065 u32 div, con; 1066 1067 /* PWM closk rate is same as pclk_pmu */ 1068 con = readl(&pmucru->pmucru_clksel[0]); 1069 div = con & PMU_PCLK_DIV_CON_MASK; 1070 1071 return DIV_TO_RATE(PPLL_HZ, div); 1072 } 1073 1074 static ulong rk3399_pmuclk_get_rate(struct clk *clk) 1075 { 1076 struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev); 1077 ulong rate = 0; 1078 1079 switch (clk->id) { 1080 case PCLK_RKPWM_PMU: 1081 rate = rk3399_pwm_get_clk(priv->pmucru); 1082 break; 1083 case SCLK_I2C0_PMU: 1084 case SCLK_I2C4_PMU: 1085 case SCLK_I2C8_PMU: 1086 rate = rk3399_i2c_get_pmuclk(priv->pmucru, clk->id); 1087 break; 1088 default: 1089 return -ENOENT; 1090 } 1091 1092 return rate; 1093 } 1094 1095 static ulong rk3399_pmuclk_set_rate(struct clk *clk, ulong rate) 1096 { 1097 struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev); 1098 ulong ret = 0; 1099 1100 switch (clk->id) { 1101 case SCLK_I2C0_PMU: 1102 case SCLK_I2C4_PMU: 1103 case SCLK_I2C8_PMU: 1104 ret = rk3399_i2c_set_pmuclk(priv->pmucru, clk->id, rate); 1105 break; 1106 default: 1107 return -ENOENT; 1108 } 1109 1110 return ret; 1111 } 1112 1113 static struct clk_ops rk3399_pmuclk_ops = { 1114 .get_rate = rk3399_pmuclk_get_rate, 1115 .set_rate = rk3399_pmuclk_set_rate, 1116 }; 1117 1118 #ifndef CONFIG_SPL_BUILD 1119 static void pmuclk_init(struct rk3399_pmucru *pmucru) 1120 { 1121 u32 pclk_div; 1122 1123 /* configure pmu pll(ppll) */ 1124 rkclk_set_pll(&pmucru->ppll_con[0], &ppll_init_cfg); 1125 1126 /* configure pmu pclk */ 1127 pclk_div = PPLL_HZ / PMU_PCLK_HZ - 1; 1128 rk_clrsetreg(&pmucru->pmucru_clksel[0], 1129 PMU_PCLK_DIV_CON_MASK, 1130 pclk_div << PMU_PCLK_DIV_CON_SHIFT); 1131 } 1132 #endif 1133 1134 static int rk3399_pmuclk_probe(struct udevice *dev) 1135 { 1136 #if CONFIG_IS_ENABLED(OF_PLATDATA) || !defined(CONFIG_SPL_BUILD) 1137 struct rk3399_pmuclk_priv *priv = dev_get_priv(dev); 1138 #endif 1139 1140 #if CONFIG_IS_ENABLED(OF_PLATDATA) 1141 struct rk3399_pmuclk_plat *plat = dev_get_platdata(dev); 1142 1143 priv->pmucru = map_sysmem(plat->dtd.reg[1], plat->dtd.reg[3]); 1144 #endif 1145 1146 #ifndef CONFIG_SPL_BUILD 1147 pmuclk_init(priv->pmucru); 1148 #endif 1149 return 0; 1150 } 1151 1152 static int rk3399_pmuclk_ofdata_to_platdata(struct udevice *dev) 1153 { 1154 #if !CONFIG_IS_ENABLED(OF_PLATDATA) 1155 struct rk3399_pmuclk_priv *priv = dev_get_priv(dev); 1156 1157 priv->pmucru = (struct rk3399_pmucru *)dev_get_addr(dev); 1158 #endif 1159 return 0; 1160 } 1161 1162 static const struct udevice_id rk3399_pmuclk_ids[] = { 1163 { .compatible = "rockchip,rk3399-pmucru" }, 1164 { } 1165 }; 1166 1167 U_BOOT_DRIVER(rockchip_rk3399_pmuclk) = { 1168 .name = "rockchip_rk3399_pmucru", 1169 .id = UCLASS_CLK, 1170 .of_match = rk3399_pmuclk_ids, 1171 .priv_auto_alloc_size = sizeof(struct rk3399_pmuclk_priv), 1172 .ofdata_to_platdata = rk3399_pmuclk_ofdata_to_platdata, 1173 .ops = &rk3399_pmuclk_ops, 1174 .probe = rk3399_pmuclk_probe, 1175 #if CONFIG_IS_ENABLED(OF_PLATDATA) 1176 .platdata_auto_alloc_size = sizeof(struct rk3399_pmuclk_plat), 1177 #endif 1178 }; 1179