1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2018 Fuzhou Rockchip Electronics Co., Ltd 4 */ 5 6 #include <common.h> 7 #include <bitfield.h> 8 #include <clk-uclass.h> 9 #include <dm.h> 10 #include <errno.h> 11 #include <syscon.h> 12 #include <clk.h> 13 #include <asm/arch/clock.h> 14 #include <asm/arch/cru_rk1808.h> 15 #include <asm/arch/hardware.h> 16 #include <asm/io.h> 17 #include <dm/lists.h> 18 #include <dt-bindings/clock/rk1808-cru.h> 19 #include <div64.h> 20 21 DECLARE_GLOBAL_DATA_PTR; 22 23 #define RK1808_CPUCLK_RATE(_rate, _aclk_div, _pclk_div) \ 24 { \ 25 .rate = _rate##U, \ 26 .aclk_div = _aclk_div, \ 27 .pclk_div = _pclk_div, \ 28 } 29 30 #define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1)) 31 32 static struct rockchip_pll_rate_table rk1808_pll_rates[] = { 33 /* _mhz, _refdiv, _fbdiv, _postdiv1, _postdiv2, _dsmpd, _frac */ 34 RK3036_PLL_RATE(1200000000, 1, 50, 1, 1, 1, 0), 35 RK3036_PLL_RATE(1188000000, 2, 99, 1, 1, 1, 0), 36 RK3036_PLL_RATE(1100000000, 12, 550, 1, 1, 1, 0), 37 RK3036_PLL_RATE(1008000000, 1, 84, 2, 1, 1, 0), 38 RK3036_PLL_RATE(1000000000, 6, 500, 2, 1, 1, 0), 39 RK3036_PLL_RATE(816000000, 1, 68, 2, 1, 1, 0), 40 RK3036_PLL_RATE(800000000, 6, 400, 2, 1, 1, 0), 41 RK3036_PLL_RATE(600000000, 1, 75, 3, 1, 1, 0), 42 RK3036_PLL_RATE(594000000, 2, 99, 2, 1, 1, 0), 43 RK3036_PLL_RATE(500000000, 6, 250, 2, 1, 1, 0), 44 RK3036_PLL_RATE(200000000, 1, 200, 6, 4, 1, 0), 45 { /* sentinel */ }, 46 }; 47 48 #ifndef CONFIG_SPL_BUILD 49 #define RK1808_CLK_DUMP(_id, _name, _iscru) \ 50 { \ 51 .id = _id, \ 52 .name = _name, \ 53 .is_cru = _iscru, \ 54 } 55 56 static const struct rk1808_clk_info clks_dump[] = { 57 RK1808_CLK_DUMP(PLL_APLL, "apll", true), 58 RK1808_CLK_DUMP(PLL_DPLL, "dpll", true), 59 RK1808_CLK_DUMP(PLL_CPLL, "cpll", true), 60 RK1808_CLK_DUMP(PLL_GPLL, "gpll", true), 61 RK1808_CLK_DUMP(PLL_NPLL, "npll", true), 62 RK1808_CLK_DUMP(PLL_PPLL, "ppll", true), 63 RK1808_CLK_DUMP(HSCLK_BUS_PRE, "hsclk_bus", true), 64 RK1808_CLK_DUMP(MSCLK_BUS_PRE, "msclk_bus", true), 65 RK1808_CLK_DUMP(LSCLK_BUS_PRE, "lsclk_bus", true), 66 RK1808_CLK_DUMP(MSCLK_PERI, "msclk_peri", true), 67 RK1808_CLK_DUMP(LSCLK_PERI, "lsclk_peri", true), 68 }; 69 #endif 70 71 static struct rockchip_cpu_rate_table rk1808_cpu_rates[] = { 72 RK1808_CPUCLK_RATE(1200000000, 1, 5), 73 RK1808_CPUCLK_RATE(1008000000, 1, 5), 74 RK1808_CPUCLK_RATE(816000000, 1, 3), 75 RK1808_CPUCLK_RATE(600000000, 1, 3), 76 }; 77 78 static struct rockchip_pll_clock rk1808_pll_clks[] = { 79 [APLL] = PLL(pll_rk3036, PLL_APLL, RK1808_PLL_CON(0), 80 RK1808_MODE_CON, 0, 10, 0, rk1808_pll_rates), 81 [DPLL] = PLL(pll_rk3036, PLL_DPLL, RK1808_PLL_CON(8), 82 RK1808_MODE_CON, 2, 10, 0, NULL), 83 [CPLL] = PLL(pll_rk3036, PLL_CPLL, RK1808_PLL_CON(16), 84 RK1808_MODE_CON, 4, 10, 0, rk1808_pll_rates), 85 [GPLL] = PLL(pll_rk3036, PLL_GPLL, RK1808_PLL_CON(24), 86 RK1808_MODE_CON, 6, 10, 0, rk1808_pll_rates), 87 [NPLL] = PLL(pll_rk3036, PLL_NPLL, RK1808_PLL_CON(24), 88 RK1808_MODE_CON, 8, 10, 0, rk1808_pll_rates), 89 [PPLL] = PLL(pll_rk3036, PLL_PPLL, RK1808_PMU_PLL_CON(0), 90 RK1808_PMU_MODE_CON, 0, 10, 0, rk1808_pll_rates), 91 }; 92 93 #ifndef CONFIG_SPL_BUILD 94 static ulong rk1808_i2c_get_clk(struct rk1808_clk_priv *priv, ulong clk_id) 95 { 96 struct rk1808_cru *cru = priv->cru; 97 u32 div, con; 98 99 switch (clk_id) { 100 case SCLK_PMU_I2C0: 101 con = readl(&cru->pmu_clksel_con[7]); 102 div = (con & CLK_I2C0_DIV_CON_MASK) >> CLK_I2C0_DIV_CON_SHIFT; 103 break; 104 case SCLK_I2C1: 105 con = readl(&cru->clksel_con[59]); 106 div = (con & CLK_I2C1_DIV_CON_MASK) >> CLK_I2C1_DIV_CON_SHIFT; 107 break; 108 case SCLK_I2C2: 109 con = readl(&cru->clksel_con[59]); 110 div = (con & CLK_I2C2_DIV_CON_MASK) >> CLK_I2C2_DIV_CON_SHIFT; 111 break; 112 case SCLK_I2C3: 113 con = readl(&cru->clksel_con[60]); 114 div = (con & CLK_I2C3_DIV_CON_MASK) >> CLK_I2C3_DIV_CON_SHIFT; 115 break; 116 case SCLK_I2C4: 117 con = readl(&cru->clksel_con[71]); 118 div = (con & CLK_I2C4_DIV_CON_MASK) >> CLK_I2C4_DIV_CON_SHIFT; 119 break; 120 case SCLK_I2C5: 121 con = readl(&cru->clksel_con[71]); 122 div = (con & CLK_I2C5_DIV_CON_MASK) >> CLK_I2C5_DIV_CON_SHIFT; 123 break; 124 default: 125 printf("do not support this i2c bus\n"); 126 return -EINVAL; 127 } 128 129 return DIV_TO_RATE(priv->gpll_hz, div); 130 } 131 132 static ulong rk1808_i2c_set_clk(struct rk1808_clk_priv *priv, 133 ulong clk_id, uint hz) 134 { 135 struct rk1808_cru *cru = priv->cru; 136 int src_clk_div; 137 138 src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz); 139 assert(src_clk_div - 1 < 127); 140 141 switch (clk_id) { 142 case SCLK_PMU_I2C0: 143 rk_clrsetreg(&cru->pmu_clksel_con[7], 144 CLK_I2C0_DIV_CON_MASK | CLK_I2C0_PLL_SEL_MASK, 145 (src_clk_div - 1) << CLK_I2C0_DIV_CON_SHIFT | 146 CLK_I2C0_PLL_SEL_PPLL << CLK_I2C0_PLL_SEL_SHIFT); 147 break; 148 case SCLK_I2C1: 149 rk_clrsetreg(&cru->clksel_con[59], 150 CLK_I2C1_DIV_CON_MASK | CLK_I2C1_PLL_SEL_MASK, 151 (src_clk_div - 1) << CLK_I2C1_DIV_CON_SHIFT | 152 CLK_I2C_PLL_SEL_GPLL << CLK_I2C1_PLL_SEL_SHIFT); 153 break; 154 case SCLK_I2C2: 155 rk_clrsetreg(&cru->clksel_con[59], 156 CLK_I2C2_DIV_CON_MASK | CLK_I2C2_PLL_SEL_MASK, 157 (src_clk_div - 1) << CLK_I2C2_DIV_CON_SHIFT | 158 CLK_I2C_PLL_SEL_GPLL << CLK_I2C2_PLL_SEL_SHIFT); 159 break; 160 case SCLK_I2C3: 161 rk_clrsetreg(&cru->clksel_con[60], 162 CLK_I2C3_DIV_CON_MASK | CLK_I2C3_PLL_SEL_MASK, 163 (src_clk_div - 1) << CLK_I2C3_DIV_CON_SHIFT | 164 CLK_I2C_PLL_SEL_GPLL << CLK_I2C3_PLL_SEL_SHIFT); 165 break; 166 case SCLK_I2C4: 167 rk_clrsetreg(&cru->clksel_con[71], 168 CLK_I2C4_DIV_CON_MASK | CLK_I2C4_PLL_SEL_MASK, 169 (src_clk_div - 1) << CLK_I2C4_DIV_CON_SHIFT | 170 CLK_I2C_PLL_SEL_GPLL << CLK_I2C4_PLL_SEL_SHIFT); 171 break; 172 case SCLK_I2C5: 173 rk_clrsetreg(&cru->clksel_con[71], 174 CLK_I2C5_DIV_CON_MASK | CLK_I2C5_PLL_SEL_MASK, 175 (src_clk_div - 1) << CLK_I2C5_DIV_CON_SHIFT | 176 CLK_I2C_PLL_SEL_GPLL << CLK_I2C5_PLL_SEL_SHIFT); 177 break; 178 default: 179 printf("do not support this i2c bus\n"); 180 return -EINVAL; 181 } 182 183 return rk1808_i2c_get_clk(priv, clk_id); 184 } 185 #endif 186 187 static ulong rk1808_mmc_get_clk(struct rk1808_clk_priv *priv, uint clk_id) 188 { 189 struct rk1808_cru *cru = priv->cru; 190 u32 div, con, con_id; 191 192 switch (clk_id) { 193 case HCLK_SDMMC: 194 case SCLK_SDMMC: 195 con_id = 20; 196 break; 197 case HCLK_SDIO: 198 case SCLK_SDIO: 199 con_id = 22; 200 break; 201 case HCLK_EMMC: 202 case SCLK_EMMC: 203 case SCLK_EMMC_SAMPLE: 204 con_id = 24; 205 break; 206 default: 207 return -EINVAL; 208 } 209 210 con = readl(&cru->clksel_con[con_id]); 211 div = (con & EMMC_DIV_MASK) >> EMMC_DIV_SHIFT; 212 213 if ((con & EMMC_PLL_MASK) >> EMMC_PLL_SHIFT 214 == EMMC_SEL_24M) 215 return DIV_TO_RATE(OSC_HZ, div) / 2; 216 else 217 return DIV_TO_RATE(priv->gpll_hz, div) / 2; 218 } 219 220 static ulong rk1808_mmc_set_clk(struct rk1808_clk_priv *priv, 221 ulong clk_id, ulong set_rate) 222 { 223 struct rk1808_cru *cru = priv->cru; 224 int src_clk_div; 225 u32 con_id; 226 227 switch (clk_id) { 228 case HCLK_SDMMC: 229 case SCLK_SDMMC: 230 con_id = 20; 231 break; 232 case HCLK_SDIO: 233 case SCLK_SDIO: 234 con_id = 22; 235 break; 236 case HCLK_EMMC: 237 case SCLK_EMMC: 238 con_id = 24; 239 break; 240 default: 241 return -EINVAL; 242 } 243 244 /* Select clk_sdmmc/emmc source from GPLL by default */ 245 /* mmc clock defaulg div 2 internal, need provide double in cru */ 246 src_clk_div = DIV_ROUND_UP(priv->gpll_hz / 2, set_rate); 247 248 if (src_clk_div > 127) { 249 /* use 24MHz source for 400KHz clock */ 250 src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, set_rate); 251 rk_clrsetreg(&cru->clksel_con[con_id], 252 EMMC_PLL_MASK | EMMC_DIV_MASK, 253 EMMC_SEL_24M << EMMC_PLL_SHIFT | 254 (src_clk_div - 1) << EMMC_DIV_SHIFT); 255 } else { 256 rk_clrsetreg(&cru->clksel_con[con_id], 257 EMMC_PLL_MASK | EMMC_DIV_MASK, 258 EMMC_SEL_GPLL << EMMC_PLL_SHIFT | 259 (src_clk_div - 1) << EMMC_DIV_SHIFT); 260 } 261 rk_clrsetreg(&cru->clksel_con[con_id + 1], EMMC_CLK_SEL_MASK, 262 EMMC_CLK_SEL_EMMC); 263 264 return rk1808_mmc_get_clk(priv, clk_id); 265 } 266 267 #ifndef CONFIG_SPL_BUILD 268 static ulong rk1808_pwm_get_clk(struct rk1808_clk_priv *priv, ulong clk_id) 269 { 270 struct rk1808_cru *cru = priv->cru; 271 u32 div, con; 272 273 switch (clk_id) { 274 case SCLK_PWM0: 275 con = readl(&cru->clksel_con[69]); 276 div = (con & CLK_PWM0_DIV_CON_MASK) >> CLK_PWM0_DIV_CON_SHIFT; 277 break; 278 case SCLK_PWM1: 279 con = readl(&cru->clksel_con[69]); 280 div = (con & CLK_PWM1_DIV_CON_MASK) >> CLK_PWM1_DIV_CON_SHIFT; 281 break; 282 case SCLK_PWM2: 283 con = readl(&cru->clksel_con[70]); 284 div = (con & CLK_PWM2_DIV_CON_MASK) >> CLK_PWM2_DIV_CON_SHIFT; 285 break; 286 default: 287 printf("do not support this pwm bus\n"); 288 return -EINVAL; 289 } 290 291 return DIV_TO_RATE(priv->gpll_hz, div); 292 } 293 294 static ulong rk1808_pwm_set_clk(struct rk1808_clk_priv *priv, 295 ulong clk_id, uint hz) 296 { 297 struct rk1808_cru *cru = priv->cru; 298 int src_clk_div; 299 300 src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz); 301 assert(src_clk_div - 1 < 127); 302 303 switch (clk_id) { 304 case SCLK_PWM0: 305 rk_clrsetreg(&cru->clksel_con[69], 306 CLK_PWM0_DIV_CON_MASK | CLK_PWM0_PLL_SEL_MASK, 307 (src_clk_div - 1) << CLK_PWM0_DIV_CON_SHIFT | 308 CLK_PWM_PLL_SEL_GPLL << CLK_PWM0_PLL_SEL_SHIFT); 309 break; 310 case SCLK_PWM1: 311 rk_clrsetreg(&cru->clksel_con[69], 312 CLK_PWM1_DIV_CON_MASK | CLK_PWM1_PLL_SEL_MASK, 313 (src_clk_div - 1) << CLK_PWM1_DIV_CON_SHIFT | 314 CLK_PWM_PLL_SEL_GPLL << CLK_PWM1_PLL_SEL_SHIFT); 315 break; 316 case SCLK_PWM2: 317 rk_clrsetreg(&cru->clksel_con[70], 318 CLK_PWM2_DIV_CON_MASK | CLK_PWM2_PLL_SEL_MASK, 319 (src_clk_div - 1) << CLK_PWM2_DIV_CON_SHIFT | 320 CLK_PWM_PLL_SEL_GPLL << CLK_PWM2_PLL_SEL_SHIFT); 321 break; 322 default: 323 printf("do not support this pwm bus\n"); 324 return -EINVAL; 325 } 326 327 return rk1808_pwm_get_clk(priv, clk_id); 328 } 329 330 static ulong rk1808_saradc_get_clk(struct rk1808_clk_priv *priv) 331 { 332 struct rk1808_cru *cru = priv->cru; 333 u32 div, con; 334 335 con = readl(&cru->clksel_con[63]); 336 div = con & CLK_SARADC_DIV_CON_MASK; 337 338 return DIV_TO_RATE(OSC_HZ, div); 339 } 340 341 static ulong rk1808_saradc_set_clk(struct rk1808_clk_priv *priv, uint hz) 342 { 343 struct rk1808_cru *cru = priv->cru; 344 int src_clk_div; 345 346 src_clk_div = DIV_ROUND_UP(OSC_HZ, hz); 347 assert(src_clk_div - 1 < 2047); 348 349 rk_clrsetreg(&cru->clksel_con[63], 350 CLK_SARADC_DIV_CON_MASK, 351 (src_clk_div - 1) << CLK_SARADC_DIV_CON_SHIFT); 352 353 return rk1808_saradc_get_clk(priv); 354 } 355 356 static ulong rk1808_tsadc_get_clk(struct rk1808_clk_priv *priv) 357 { 358 struct rk1808_cru *cru = priv->cru; 359 u32 div, con; 360 361 con = readl(&cru->clksel_con[62]); 362 div = con & CLK_SARADC_DIV_CON_MASK; 363 364 return DIV_TO_RATE(OSC_HZ, div); 365 } 366 367 static ulong rk1808_tsadc_set_clk(struct rk1808_clk_priv *priv, uint hz) 368 { 369 struct rk1808_cru *cru = priv->cru; 370 int src_clk_div; 371 372 src_clk_div = DIV_ROUND_UP(OSC_HZ, hz); 373 assert(src_clk_div - 1 < 2047); 374 375 rk_clrsetreg(&cru->clksel_con[62], 376 CLK_SARADC_DIV_CON_MASK, 377 (src_clk_div - 1) << CLK_SARADC_DIV_CON_SHIFT); 378 379 return rk1808_tsadc_get_clk(priv); 380 } 381 382 static ulong rk1808_spi_get_clk(struct rk1808_clk_priv *priv, ulong clk_id) 383 { 384 struct rk1808_cru *cru = priv->cru; 385 u32 div, con; 386 387 switch (clk_id) { 388 case SCLK_SPI0: 389 con = readl(&cru->clksel_con[60]); 390 div = (con & CLK_SPI0_DIV_CON_MASK) >> CLK_SPI0_DIV_CON_SHIFT; 391 break; 392 case SCLK_SPI1: 393 con = readl(&cru->clksel_con[61]); 394 div = (con & CLK_SPI1_DIV_CON_MASK) >> CLK_SPI1_DIV_CON_SHIFT; 395 break; 396 case SCLK_SPI2: 397 con = readl(&cru->clksel_con[61]); 398 div = (con & CLK_SPI2_DIV_CON_MASK) >> CLK_SPI2_DIV_CON_SHIFT; 399 break; 400 default: 401 printf("do not support this pwm bus\n"); 402 return -EINVAL; 403 } 404 405 return DIV_TO_RATE(priv->gpll_hz, div); 406 } 407 408 static ulong rk1808_spi_set_clk(struct rk1808_clk_priv *priv, 409 ulong clk_id, uint hz) 410 { 411 struct rk1808_cru *cru = priv->cru; 412 int src_clk_div; 413 414 src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz); 415 assert(src_clk_div - 1 < 127); 416 417 switch (clk_id) { 418 case SCLK_SPI0: 419 rk_clrsetreg(&cru->clksel_con[60], 420 CLK_SPI0_DIV_CON_MASK | CLK_SPI0_PLL_SEL_MASK, 421 (src_clk_div - 1) << CLK_SPI0_DIV_CON_SHIFT | 422 CLK_SPI_PLL_SEL_GPLL << CLK_SPI0_PLL_SEL_SHIFT); 423 break; 424 case SCLK_SPI1: 425 rk_clrsetreg(&cru->clksel_con[61], 426 CLK_SPI1_DIV_CON_MASK | CLK_SPI1_PLL_SEL_MASK, 427 (src_clk_div - 1) << CLK_SPI1_DIV_CON_SHIFT | 428 CLK_SPI_PLL_SEL_GPLL << CLK_SPI1_PLL_SEL_SHIFT); 429 break; 430 case SCLK_SPI2: 431 rk_clrsetreg(&cru->clksel_con[61], 432 CLK_SPI2_DIV_CON_MASK | CLK_SPI2_PLL_SEL_MASK, 433 (src_clk_div - 1) << CLK_SPI2_DIV_CON_SHIFT | 434 CLK_SPI_PLL_SEL_GPLL << CLK_SPI2_PLL_SEL_SHIFT); 435 break; 436 default: 437 printf("do not support this pwm bus\n"); 438 return -EINVAL; 439 } 440 441 return rk1808_spi_get_clk(priv, clk_id); 442 } 443 444 #define RK1808_VOP_PLL_LIMIT_FREQ 600 * 1000000 445 static ulong rk1808_vop_get_clk(struct rk1808_clk_priv *priv, ulong clk_id) 446 { 447 struct rk1808_cru *cru = priv->cru; 448 u32 div, con, parent; 449 450 switch (clk_id) { 451 case ACLK_VOPRAW: 452 case ACLK_VOPLITE: 453 con = readl(&cru->clksel_con[4]); 454 div = (con & ACLK_VOP_DIV_CON_MASK) >> ACLK_VOP_DIV_CON_SHIFT; 455 parent = priv->gpll_hz; 456 break; 457 case HCLK_VOPRAW: 458 case HCLK_VOPLITE: 459 parent = rk1808_vop_get_clk(priv, ACLK_VOPRAW); 460 con = readl(&cru->clksel_con[4]); 461 div = (con & HCLK_VOP_DIV_CON_MASK) >> HCLK_VOP_DIV_CON_SHIFT; 462 break; 463 case DCLK_VOPRAW: 464 con = readl(&cru->clksel_con[5]); 465 div = con & DCLK_VOPRAW_DIV_CON_MASK; 466 parent = rockchip_pll_get_rate(&rk1808_pll_clks[NPLL], 467 priv->cru, NPLL); 468 break; 469 case DCLK_VOPLITE: 470 con = readl(&cru->clksel_con[7]); 471 div = con & DCLK_VOPLITE_DIV_CON_MASK; 472 parent = (con & DCLK_VOPLITE_PLL_SEL_MASK) >> 473 DCLK_VOPLITE_PLL_SEL_SHIFT; 474 if (parent == DCLK_VOPLITE_PLL_SEL_NPLL) 475 parent = rockchip_pll_get_rate(&rk1808_pll_clks[NPLL], 476 priv->cru, NPLL); 477 else if (parent == DCLK_VOPLITE_PLL_SEL_CPLL) 478 parent = priv->cpll_hz; 479 else 480 parent = priv->gpll_hz; 481 break; 482 default: 483 return -ENOENT; 484 } 485 486 return DIV_TO_RATE(parent, div); 487 } 488 489 static ulong rk1808_vop_set_clk(struct rk1808_clk_priv *priv, 490 ulong clk_id, uint hz) 491 { 492 struct rk1808_cru *cru = priv->cru; 493 int src_clk_div, parent; 494 495 src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz); 496 assert(src_clk_div - 1 < 31); 497 498 switch (clk_id) { 499 case ACLK_VOPRAW: 500 case ACLK_VOPLITE: 501 rk_clrsetreg(&cru->clksel_con[4], 502 ACLK_VOP_PLL_SEL_MASK | ACLK_VOP_DIV_CON_MASK, 503 ACLK_VOP_PLL_SEL_GPLL << ACLK_VOP_PLL_SEL_SHIFT | 504 (src_clk_div - 1) << ACLK_VOP_DIV_CON_SHIFT); 505 break; 506 case HCLK_VOPRAW: 507 case HCLK_VOPLITE: 508 src_clk_div = 509 DIV_ROUND_UP(rk1808_vop_get_clk(priv, ACLK_VOPRAW), hz); 510 assert(src_clk_div - 1 < 15); 511 rk_clrsetreg(&cru->clksel_con[4], 512 HCLK_VOP_DIV_CON_MASK, 513 (src_clk_div - 1) << HCLK_VOP_DIV_CON_SHIFT); 514 break; 515 case DCLK_VOPRAW: 516 /* 517 * vopb dclk source from npll, and equals to 518 */ 519 src_clk_div = DIV_ROUND_UP(RK1808_VOP_PLL_LIMIT_FREQ, hz); 520 rockchip_pll_set_rate(&rk1808_pll_clks[NPLL], 521 priv->cru, NPLL, src_clk_div * hz); 522 rk_clrsetreg(&cru->clksel_con[5], 523 DCLK_VOPRAW_SEL_MASK | 524 DCLK_VOPRAW_PLL_SEL_MASK | 525 DCLK_VOPRAW_DIV_CON_MASK, 526 DCLK_VOPRAW_SEL_VOPRAW << 527 DCLK_VOPRAW_SEL_SHIFT | 528 DCLK_VOPRAW_PLL_SEL_NPLL << 529 DCLK_VOPRAW_PLL_SEL_SHIFT | 530 (src_clk_div - 1) << DCLK_VOPRAW_DIV_CON_SHIFT); 531 break; 532 case DCLK_VOPLITE: 533 /* 534 * vopl dclk source from cpll, and equals to 535 */ 536 if (!(priv->npll_hz % hz)) { 537 parent = DCLK_VOPLITE_PLL_SEL_NPLL; 538 src_clk_div = do_div(priv->npll_hz, hz); 539 } else if (!(priv->cpll_hz % hz)) { 540 parent = DCLK_VOPLITE_PLL_SEL_CPLL; 541 src_clk_div = do_div(priv->cpll_hz, hz); 542 } else { 543 parent = DCLK_VOPLITE_PLL_SEL_GPLL; 544 src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz); 545 } 546 rk_clrsetreg(&cru->clksel_con[7], 547 DCLK_VOPLITE_SEL_MASK | DCLK_VOPLITE_PLL_SEL_MASK | 548 DCLK_VOPLITE_DIV_CON_MASK, 549 DCLK_VOPLITE_SEL_VOPRAW << DCLK_VOPLITE_SEL_SHIFT | 550 parent << DCLK_VOPLITE_PLL_SEL_SHIFT | 551 (src_clk_div - 1) << DCLK_VOPLITE_DIV_CON_SHIFT); 552 break; 553 default: 554 printf("do not support this vop freq\n"); 555 return -EINVAL; 556 } 557 558 return rk1808_vop_get_clk(priv, clk_id); 559 } 560 #endif 561 562 static ulong rk1808_bus_get_clk(struct rk1808_clk_priv *priv, ulong clk_id) 563 { 564 struct rk1808_cru *cru = priv->cru; 565 u32 div, con, parent; 566 567 switch (clk_id) { 568 case HSCLK_BUS_PRE: 569 con = readl(&cru->clksel_con[27]); 570 div = (con & HSCLK_BUS_DIV_CON_MASK) >> HSCLK_BUS_DIV_CON_SHIFT; 571 parent = priv->gpll_hz; 572 break; 573 case MSCLK_BUS_PRE: 574 con = readl(&cru->clksel_con[28]); 575 div = (con & MSCLK_BUS_DIV_CON_MASK) >> MSCLK_BUS_DIV_CON_SHIFT; 576 parent = priv->gpll_hz; 577 break; 578 case LSCLK_BUS_PRE: 579 con = readl(&cru->clksel_con[28]); 580 div = (con & LSCLK_BUS_DIV_CON_MASK) >> LSCLK_BUS_DIV_CON_SHIFT; 581 parent = priv->gpll_hz; 582 break; 583 default: 584 return -ENOENT; 585 } 586 587 return DIV_TO_RATE(parent, div); 588 } 589 590 static ulong rk1808_bus_set_clk(struct rk1808_clk_priv *priv, 591 ulong clk_id, ulong hz) 592 { 593 struct rk1808_cru *cru = priv->cru; 594 int src_clk_div; 595 596 /* 597 * select gpll as pd_bus bus clock source and 598 * set up dependent divisors for PCLK/HCLK and ACLK clocks. 599 */ 600 switch (clk_id) { 601 case HSCLK_BUS_PRE: 602 src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz); 603 assert(src_clk_div - 1 < 31); 604 rk_clrsetreg(&cru->clksel_con[27], 605 CLK_BUS_PLL_SEL_MASK | HSCLK_BUS_DIV_CON_MASK, 606 CLK_BUS_PLL_SEL_GPLL << CLK_BUS_PLL_SEL_SHIFT | 607 (src_clk_div - 1) << HSCLK_BUS_DIV_CON_SHIFT); 608 break; 609 case MSCLK_BUS_PRE: 610 src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz); 611 assert(src_clk_div - 1 < 31); 612 rk_clrsetreg(&cru->clksel_con[28], 613 CLK_BUS_PLL_SEL_MASK | MSCLK_BUS_DIV_CON_MASK, 614 CLK_BUS_PLL_SEL_GPLL << CLK_BUS_PLL_SEL_SHIFT | 615 (src_clk_div - 1) << MSCLK_BUS_DIV_CON_SHIFT); 616 break; 617 case LSCLK_BUS_PRE: 618 src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz); 619 assert(src_clk_div - 1 < 31); 620 rk_clrsetreg(&cru->clksel_con[28], 621 CLK_BUS_PLL_SEL_MASK | LSCLK_BUS_DIV_CON_MASK, 622 CLK_BUS_PLL_SEL_GPLL << CLK_BUS_PLL_SEL_SHIFT | 623 (src_clk_div - 1) << LSCLK_BUS_DIV_CON_SHIFT); 624 break; 625 default: 626 printf("do not support this bus freq\n"); 627 return -EINVAL; 628 } 629 630 return rk1808_bus_get_clk(priv, clk_id); 631 } 632 633 static ulong rk1808_peri_get_clk(struct rk1808_clk_priv *priv, ulong clk_id) 634 { 635 struct rk1808_cru *cru = priv->cru; 636 u32 div, con, parent; 637 638 switch (clk_id) { 639 case MSCLK_PERI: 640 con = readl(&cru->clksel_con[19]); 641 div = (con & MSCLK_PERI_DIV_CON_MASK) >> 642 MSCLK_PERI_DIV_CON_SHIFT; 643 parent = priv->gpll_hz; 644 break; 645 case LSCLK_PERI: 646 con = readl(&cru->clksel_con[19]); 647 div = (con & LSCLK_PERI_DIV_CON_MASK) >> 648 LSCLK_PERI_DIV_CON_SHIFT; 649 parent = priv->gpll_hz; 650 break; 651 default: 652 return -ENOENT; 653 } 654 655 return DIV_TO_RATE(parent, div); 656 } 657 658 static ulong rk1808_peri_set_clk(struct rk1808_clk_priv *priv, 659 ulong clk_id, ulong hz) 660 { 661 struct rk1808_cru *cru = priv->cru; 662 int src_clk_div; 663 664 src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz); 665 assert(src_clk_div - 1 < 31); 666 667 /* 668 * select gpll as pd_peri bus clock source and 669 * set up dependent divisors for HCLK and ACLK clocks. 670 */ 671 switch (clk_id) { 672 case MSCLK_PERI: 673 rk_clrsetreg(&cru->clksel_con[19], 674 CLK_PERI_PLL_SEL_MASK | MSCLK_PERI_DIV_CON_MASK, 675 CLK_PERI_PLL_SEL_GPLL << CLK_PERI_PLL_SEL_SHIFT | 676 (src_clk_div - 1) << MSCLK_PERI_DIV_CON_SHIFT); 677 break; 678 case LSCLK_PERI: 679 rk_clrsetreg(&cru->clksel_con[19], 680 CLK_PERI_PLL_SEL_MASK | LSCLK_PERI_DIV_CON_MASK, 681 CLK_PERI_PLL_SEL_GPLL << CLK_PERI_PLL_SEL_SHIFT | 682 (src_clk_div - 1) << LSCLK_PERI_DIV_CON_SHIFT); 683 break; 684 default: 685 printf("do not support this peri freq\n"); 686 return -EINVAL; 687 } 688 689 return rk1808_peri_get_clk(priv, clk_id); 690 } 691 692 static ulong rk1808_armclk_set_clk(struct rk1808_clk_priv *priv, ulong hz) 693 { 694 struct rk1808_cru *cru = priv->cru; 695 const struct rockchip_cpu_rate_table *rate; 696 ulong old_rate; 697 698 rate = rockchip_get_cpu_settings(rk1808_cpu_rates, hz); 699 if (!rate) { 700 printf("%s unsupported rate\n", __func__); 701 return -EINVAL; 702 } 703 704 /* 705 * select apll as cpu/core clock pll source and 706 * set up dependent divisors for PERI and ACLK clocks. 707 * core hz : apll = 1:1 708 */ 709 old_rate = rockchip_pll_get_rate(&rk1808_pll_clks[APLL], 710 priv->cru, APLL); 711 if (old_rate > hz) { 712 if (rockchip_pll_set_rate(&rk1808_pll_clks[APLL], 713 priv->cru, APLL, hz)) 714 return -EINVAL; 715 rk_clrsetreg(&cru->clksel_con[0], 716 CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK | 717 CORE_ACLK_DIV_MASK | CORE_DBG_DIV_MASK, 718 rate->aclk_div << CORE_ACLK_DIV_SHIFT | 719 rate->pclk_div << CORE_DBG_DIV_SHIFT | 720 CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT | 721 0 << CORE_DIV_CON_SHIFT); 722 } else if (old_rate < hz) { 723 rk_clrsetreg(&cru->clksel_con[0], 724 CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK | 725 CORE_ACLK_DIV_MASK | CORE_DBG_DIV_MASK, 726 rate->aclk_div << CORE_ACLK_DIV_SHIFT | 727 rate->pclk_div << CORE_DBG_DIV_SHIFT | 728 CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT | 729 0 << CORE_DIV_CON_SHIFT); 730 if (rockchip_pll_set_rate(&rk1808_pll_clks[APLL], 731 priv->cru, APLL, hz)) 732 return -EINVAL; 733 } 734 735 return rockchip_pll_get_rate(&rk1808_pll_clks[APLL], priv->cru, APLL); 736 } 737 738 static ulong rk1808_clk_get_rate(struct clk *clk) 739 { 740 struct rk1808_clk_priv *priv = dev_get_priv(clk->dev); 741 ulong rate = 0; 742 743 debug("%s %ld\n", __func__, clk->id); 744 switch (clk->id) { 745 case PLL_APLL: 746 case PLL_DPLL: 747 case PLL_CPLL: 748 case PLL_GPLL: 749 case PLL_NPLL: 750 case PLL_PPLL: 751 rate = rockchip_pll_get_rate(&rk1808_pll_clks[clk->id - 1], 752 priv->cru, clk->id - 1); 753 break; 754 case ARMCLK: 755 rate = rockchip_pll_get_rate(&rk1808_pll_clks[APLL], 756 priv->cru, APLL); 757 break; 758 case HCLK_SDMMC: 759 case HCLK_EMMC: 760 case HCLK_SDIO: 761 case SCLK_SDMMC: 762 case SCLK_EMMC: 763 case SCLK_EMMC_SAMPLE: 764 case SCLK_SDIO: 765 rate = rk1808_mmc_get_clk(priv, clk->id); 766 break; 767 #ifndef CONFIG_SPL_BUILD 768 case SCLK_PMU_I2C0: 769 case SCLK_I2C1: 770 case SCLK_I2C2: 771 case SCLK_I2C3: 772 case SCLK_I2C4: 773 case SCLK_I2C5: 774 rate = rk1808_i2c_get_clk(priv, clk->id); 775 break; 776 case SCLK_PWM0: 777 case SCLK_PWM1: 778 case SCLK_PWM2: 779 rate = rk1808_pwm_get_clk(priv, clk->id); 780 break; 781 case SCLK_SARADC: 782 rate = rk1808_saradc_get_clk(priv); 783 break; 784 case SCLK_TSADC: 785 rate = rk1808_tsadc_get_clk(priv); 786 break; 787 case SCLK_SPI0: 788 case SCLK_SPI1: 789 case SCLK_SPI2: 790 rate = rk1808_spi_get_clk(priv, clk->id); 791 break; 792 case ACLK_VOPRAW: 793 case DCLK_VOPRAW: 794 case ACLK_VOPLITE: 795 case DCLK_VOPLITE: 796 rate = rk1808_vop_get_clk(priv, clk->id); 797 break; 798 #endif 799 case HSCLK_BUS_PRE: 800 case MSCLK_BUS_PRE: 801 case LSCLK_BUS_PRE: 802 rate = rk1808_bus_get_clk(priv, clk->id); 803 break; 804 case MSCLK_PERI: 805 case LSCLK_PERI: 806 rate = rk1808_peri_get_clk(priv, clk->id); 807 break; 808 default: 809 return -ENOENT; 810 } 811 812 return rate; 813 } 814 815 static ulong rk1808_clk_set_rate(struct clk *clk, ulong rate) 816 { 817 struct rk1808_clk_priv *priv = dev_get_priv(clk->dev); 818 ulong ret = 0; 819 820 debug("%s %ld %ld\n", __func__, clk->id, rate); 821 switch (clk->id) { 822 case PLL_APLL: 823 case PLL_DPLL: 824 case PLL_PPLL: 825 ret = rockchip_pll_set_rate(&rk1808_pll_clks[clk->id - 1], 826 priv->cru, clk->id - 1, rate); 827 break; 828 case PLL_CPLL: 829 ret = rockchip_pll_set_rate(&rk1808_pll_clks[CPLL], 830 priv->cru, CPLL, rate); 831 if (ret == 0) 832 priv->cpll_hz = rate; 833 break; 834 case PLL_GPLL: 835 ret = rockchip_pll_set_rate(&rk1808_pll_clks[GPLL], 836 priv->cru, GPLL, rate); 837 if (ret == 0) 838 priv->gpll_hz = rate; 839 break; 840 case PLL_NPLL: 841 ret = rockchip_pll_set_rate(&rk1808_pll_clks[NPLL], 842 priv->cru, NPLL, rate); 843 if (ret == 0) 844 priv->npll_hz = rate; 845 break; 846 case ARMCLK: 847 if (priv->armclk_hz) 848 rk1808_armclk_set_clk(priv, rate); 849 priv->armclk_hz = rate; 850 break; 851 case HCLK_SDMMC: 852 case HCLK_EMMC: 853 case HCLK_SDIO: 854 case SCLK_SDMMC: 855 case SCLK_EMMC: 856 case SCLK_SDIO: 857 ret = rk1808_mmc_set_clk(priv, clk->id, rate); 858 break; 859 #ifndef CONFIG_SPL_BUILD 860 case SCLK_PMU_I2C0: 861 case SCLK_I2C1: 862 case SCLK_I2C2: 863 case SCLK_I2C3: 864 case SCLK_I2C4: 865 case SCLK_I2C5: 866 ret = rk1808_i2c_set_clk(priv, clk->id, rate); 867 break; 868 case SCLK_PWM0: 869 case SCLK_PWM1: 870 case SCLK_PWM2: 871 ret = rk1808_pwm_set_clk(priv, clk->id, rate); 872 break; 873 case SCLK_SARADC: 874 ret = rk1808_saradc_set_clk(priv, rate); 875 break; 876 case SCLK_TSADC: 877 ret = rk1808_tsadc_set_clk(priv, rate); 878 break; 879 case SCLK_SPI0: 880 case SCLK_SPI1: 881 case SCLK_SPI2: 882 ret = rk1808_spi_set_clk(priv, clk->id, rate); 883 break; 884 case ACLK_VOPRAW: 885 case DCLK_VOPRAW: 886 case ACLK_VOPLITE: 887 case DCLK_VOPLITE: 888 ret = rk1808_vop_set_clk(priv, clk->id, rate); 889 break; 890 #endif 891 case HSCLK_BUS_PRE: 892 case MSCLK_BUS_PRE: 893 case LSCLK_BUS_PRE: 894 ret = rk1808_bus_set_clk(priv, clk->id, rate); 895 break; 896 case MSCLK_PERI: 897 case LSCLK_PERI: 898 ret = rk1808_peri_set_clk(priv, clk->id, rate); 899 break; 900 default: 901 return -ENOENT; 902 } 903 904 return ret; 905 } 906 907 #define ROCKCHIP_MMC_DELAY_SEL BIT(10) 908 #define ROCKCHIP_MMC_DEGREE_MASK 0x3 909 #define ROCKCHIP_MMC_DELAYNUM_OFFSET 2 910 #define ROCKCHIP_MMC_DELAYNUM_MASK (0xff << ROCKCHIP_MMC_DELAYNUM_OFFSET) 911 912 #define PSECS_PER_SEC 1000000000000LL 913 /* 914 * Each fine delay is between 44ps-77ps. Assume each fine delay is 60ps to 915 * simplify calculations. So 45degs could be anywhere between 33deg and 57.8deg. 916 */ 917 #define ROCKCHIP_MMC_DELAY_ELEMENT_PSEC 60 918 919 int rk1808_mmc_get_phase(struct clk *clk) 920 { 921 struct rk1808_clk_priv *priv = dev_get_priv(clk->dev); 922 struct rk1808_cru *cru = priv->cru; 923 u32 raw_value, delay_num; 924 u16 degrees = 0; 925 ulong rate; 926 927 rate = rk1808_clk_get_rate(clk); 928 929 if (rate < 0) 930 return rate; 931 932 if (clk->id == SCLK_EMMC_SAMPLE) 933 raw_value = readl(&cru->emmc_con[1]); 934 else if (clk->id == SCLK_SDMMC_SAMPLE) 935 raw_value = readl(&cru->sdmmc_con[1]); 936 else 937 raw_value = readl(&cru->sdio_con[1]); 938 939 raw_value >>= 1; 940 degrees = (raw_value & ROCKCHIP_MMC_DEGREE_MASK) * 90; 941 942 if (raw_value & ROCKCHIP_MMC_DELAY_SEL) { 943 /* degrees/delaynum * 10000 */ 944 unsigned long factor = (ROCKCHIP_MMC_DELAY_ELEMENT_PSEC / 10) * 945 36 * (rate / 1000000); 946 947 delay_num = (raw_value & ROCKCHIP_MMC_DELAYNUM_MASK); 948 delay_num >>= ROCKCHIP_MMC_DELAYNUM_OFFSET; 949 degrees += DIV_ROUND_CLOSEST(delay_num * factor, 10000); 950 } 951 952 return degrees % 360; 953 } 954 955 int rk1808_mmc_set_phase(struct clk *clk, u32 degrees) 956 { 957 struct rk1808_clk_priv *priv = dev_get_priv(clk->dev); 958 struct rk1808_cru *cru = priv->cru; 959 u8 nineties, remainder, delay_num; 960 u32 raw_value, delay; 961 ulong rate; 962 963 rate = rk1808_clk_get_rate(clk); 964 965 if (rate < 0) 966 return rate; 967 968 nineties = degrees / 90; 969 remainder = (degrees % 90); 970 971 /* 972 * Convert to delay; do a little extra work to make sure we 973 * don't overflow 32-bit / 64-bit numbers. 974 */ 975 delay = 10000000; /* PSECS_PER_SEC / 10000 / 10 */ 976 delay *= remainder; 977 delay = DIV_ROUND_CLOSEST(delay, (rate / 1000) * 36 * 978 (ROCKCHIP_MMC_DELAY_ELEMENT_PSEC / 10)); 979 980 delay_num = (u8)min_t(u32, delay, 255); 981 982 raw_value = delay_num ? ROCKCHIP_MMC_DELAY_SEL : 0; 983 raw_value |= delay_num << ROCKCHIP_MMC_DELAYNUM_OFFSET; 984 raw_value |= nineties; 985 986 raw_value <<= 1; 987 if (clk->id == SCLK_EMMC_SAMPLE) 988 writel(raw_value | 0xffff0000, &cru->emmc_con[1]); 989 else if (clk->id == SCLK_SDMMC_SAMPLE) 990 writel(raw_value | 0xffff0000, &cru->sdmmc_con[1]); 991 else 992 writel(raw_value | 0xffff0000, &cru->sdio_con[1]); 993 994 debug("mmc set_phase(%d) delay_nums=%u reg=%#x actual_degrees=%d\n", 995 degrees, delay_num, raw_value, rk1808_mmc_get_phase(clk)); 996 997 return 0; 998 } 999 1000 static int rk1808_clk_get_phase(struct clk *clk) 1001 { 1002 int ret; 1003 1004 debug("%s %ld\n", __func__, clk->id); 1005 switch (clk->id) { 1006 case SCLK_EMMC_SAMPLE: 1007 case SCLK_SDMMC_SAMPLE: 1008 case SCLK_SDIO_SAMPLE: 1009 ret = rk1808_mmc_get_phase(clk); 1010 break; 1011 default: 1012 return -ENOENT; 1013 } 1014 1015 return ret; 1016 } 1017 1018 static int rk1808_clk_set_phase(struct clk *clk, int degrees) 1019 { 1020 int ret; 1021 1022 debug("%s %ld\n", __func__, clk->id); 1023 switch (clk->id) { 1024 case SCLK_EMMC_SAMPLE: 1025 case SCLK_SDMMC_SAMPLE: 1026 case SCLK_SDIO_SAMPLE: 1027 ret = rk1808_mmc_set_phase(clk, degrees); 1028 break; 1029 default: 1030 return -ENOENT; 1031 } 1032 1033 return ret; 1034 } 1035 1036 static struct clk_ops rk1808_clk_ops = { 1037 .get_rate = rk1808_clk_get_rate, 1038 .set_rate = rk1808_clk_set_rate, 1039 .get_phase = rk1808_clk_get_phase, 1040 .set_phase = rk1808_clk_set_phase, 1041 }; 1042 1043 static int rk1808_clk_probe(struct udevice *dev) 1044 { 1045 struct rk1808_clk_priv *priv = dev_get_priv(dev); 1046 int ret; 1047 1048 if (rockchip_pll_get_rate(&rk1808_pll_clks[APLL], 1049 priv->cru, APLL) != APLL_HZ) { 1050 ret = rk1808_armclk_set_clk(priv, APLL_HZ); 1051 if (ret < 0) 1052 printf("%s failed to set armclk rate\n", __func__); 1053 } 1054 1055 priv->cpll_hz = rockchip_pll_get_rate(&rk1808_pll_clks[CPLL], 1056 priv->cru, CPLL); 1057 priv->gpll_hz = rockchip_pll_get_rate(&rk1808_pll_clks[GPLL], 1058 priv->cru, GPLL); 1059 1060 /* Process 'assigned-{clocks/clock-parents/clock-rates}' properties */ 1061 ret = clk_set_defaults(dev); 1062 if (ret) 1063 debug("%s clk_set_defaults failed %d\n", __func__, ret); 1064 1065 return 0; 1066 } 1067 1068 static int rk1808_clk_ofdata_to_platdata(struct udevice *dev) 1069 { 1070 struct rk1808_clk_priv *priv = dev_get_priv(dev); 1071 1072 priv->cru = dev_read_addr_ptr(dev); 1073 1074 return 0; 1075 } 1076 1077 static int rk1808_clk_bind(struct udevice *dev) 1078 { 1079 int ret; 1080 struct udevice *sys_child, *sf_child; 1081 struct sysreset_reg *priv; 1082 struct softreset_reg *sf_priv; 1083 1084 /* The reset driver does not have a device node, so bind it here */ 1085 ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset", 1086 &sys_child); 1087 if (ret) { 1088 debug("Warning: No sysreset driver: ret=%d\n", ret); 1089 } else { 1090 priv = malloc(sizeof(struct sysreset_reg)); 1091 priv->glb_srst_fst_value = offsetof(struct rk1808_cru, 1092 glb_srst_fst); 1093 priv->glb_srst_snd_value = offsetof(struct rk1808_cru, 1094 glb_srst_snd); 1095 sys_child->priv = priv; 1096 } 1097 1098 ret = device_bind_driver_to_node(dev, "rockchip_reset", "reset", 1099 dev_ofnode(dev), &sf_child); 1100 if (ret) { 1101 debug("Warning: No rockchip reset driver: ret=%d\n", ret); 1102 } else { 1103 sf_priv = malloc(sizeof(struct softreset_reg)); 1104 sf_priv->sf_reset_offset = offsetof(struct rk1808_cru, 1105 softrst_con[0]); 1106 sf_priv->sf_reset_num = 16; 1107 sf_child->priv = sf_priv; 1108 } 1109 1110 return 0; 1111 } 1112 1113 static const struct udevice_id rk1808_clk_ids[] = { 1114 { .compatible = "rockchip,rk1808-cru" }, 1115 { } 1116 }; 1117 1118 U_BOOT_DRIVER(rockchip_rk1808_cru) = { 1119 .name = "rockchip_rk1808_cru", 1120 .id = UCLASS_CLK, 1121 .of_match = rk1808_clk_ids, 1122 .priv_auto_alloc_size = sizeof(struct rk1808_clk_priv), 1123 .ofdata_to_platdata = rk1808_clk_ofdata_to_platdata, 1124 .ops = &rk1808_clk_ops, 1125 .bind = rk1808_clk_bind, 1126 .probe = rk1808_clk_probe, 1127 }; 1128 1129 #ifndef CONFIG_SPL_BUILD 1130 /** 1131 * soc_clk_dump() - Print clock frequencies 1132 * Returns zero on success 1133 * 1134 * Implementation for the clk dump command. 1135 */ 1136 int soc_clk_dump(void) 1137 { 1138 struct udevice *cru_dev; 1139 const struct rk1808_clk_info *clk_dump; 1140 struct clk clk; 1141 unsigned long clk_count = ARRAY_SIZE(clks_dump); 1142 unsigned long rate; 1143 int i, ret; 1144 1145 ret = uclass_get_device_by_driver(UCLASS_CLK, 1146 DM_GET_DRIVER(rockchip_rk1808_cru), 1147 &cru_dev); 1148 if (ret) { 1149 printf("%s failed to get cru device\n", __func__); 1150 return ret; 1151 } 1152 1153 printf("CLK:"); 1154 for (i = 0; i < clk_count; i++) { 1155 clk_dump = &clks_dump[i]; 1156 if (clk_dump->name) { 1157 clk.id = clk_dump->id; 1158 if (clk_dump->is_cru) 1159 ret = clk_request(cru_dev, &clk); 1160 if (ret < 0) 1161 return ret; 1162 1163 rate = clk_get_rate(&clk); 1164 clk_free(&clk); 1165 if (i == 0) { 1166 if (rate < 0) 1167 printf("%s %s\n", clk_dump->name, 1168 "unknown"); 1169 else 1170 printf("%s %lu KHz\n", clk_dump->name, 1171 rate / 1000); 1172 } else { 1173 if (rate < 0) 1174 printf("%s %s\n", clk_dump->name, 1175 "unknown"); 1176 else 1177 printf("%s %lu KHz\n", clk_dump->name, 1178 rate / 1000); 1179 } 1180 } 1181 } 1182 1183 return 0; 1184 } 1185 #endif 1186