drivers/clk/imx/clk-imx8qm.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright 2018 NXP
   4  * Peng Fan <[email protected]>
   5  */
   6
   7 #include <common.h>
   8 #include <clk-uclass.h>
   9 #include <dm.h>
  10 #include <log.h>
  11 #include <asm/arch/sci/sci.h>
  12 #include <asm/arch/clock.h>
  13 #include <dt-bindings/clock/imx8qm-clock.h>
  14 #include <dt-bindings/soc/imx_rsrc.h>
  15 #include <misc.h>
  16
  17 #include "clk-imx8.h"
  18
  19 #if CONFIG_IS_ENABLED(CMD_CLK)
  20 struct imx8_clks imx8_clk_names[] = {
  21         { IMX8QM_A53_DIV, "A53_DIV" },
  22         { IMX8QM_UART0_CLK, "UART0" },
  23         { IMX8QM_UART1_CLK, "UART1" },
  24         { IMX8QM_UART2_CLK, "UART2" },
  25         { IMX8QM_UART3_CLK, "UART3" },
  26         { IMX8QM_SDHC0_CLK, "SDHC0" },
  27         { IMX8QM_SDHC1_CLK, "SDHC1" },
  28         { IMX8QM_SDHC2_CLK, "SDHC2" },
  29         { IMX8QM_ENET0_AHB_CLK, "ENET0_AHB" },
  30         { IMX8QM_ENET0_IPG_CLK, "ENET0_IPG" },
  31         { IMX8QM_ENET0_REF_DIV, "ENET0_REF" },
  32         { IMX8QM_ENET0_PTP_CLK, "ENET0_PTP" },
  33         { IMX8QM_ENET1_AHB_CLK, "ENET1_AHB" },
  34         { IMX8QM_ENET1_IPG_CLK, "ENET1_IPG" },
  35         { IMX8QM_ENET1_REF_DIV, "ENET1_REF" },
  36         { IMX8QM_ENET1_PTP_CLK, "ENET1_PTP" },
  37 };
  38
  39 int num_clks = ARRAY_SIZE(imx8_clk_names);
  40 #endif
  41
  42 ulong imx8_clk_get_rate(struct clk *clk)
  43 {
  44         sc_pm_clk_t pm_clk;
  45         ulong rate;
  46         u16 resource;
  47         int ret;
  48
  49         debug("%s(#%lu)\n", __func__, clk->id);
  50
  51         switch (clk->id) {
  52         case IMX8QM_A53_DIV:
  53                 resource = SC_R_A53;
  54                 pm_clk = SC_PM_CLK_CPU;
  55                 break;
  56         case IMX8QM_I2C0_CLK:
  57                 resource = SC_R_I2C_0;
  58                 pm_clk = SC_PM_CLK_PER;
  59                 break;
  60         case IMX8QM_I2C1_CLK:
  61                 resource = SC_R_I2C_1;
  62                 pm_clk = SC_PM_CLK_PER;
  63                 break;
  64         case IMX8QM_I2C2_CLK:
  65                 resource = SC_R_I2C_2;
  66                 pm_clk = SC_PM_CLK_PER;
  67                 break;
  68         case IMX8QM_I2C3_CLK:
  69                 resource = SC_R_I2C_3;
  70                 pm_clk = SC_PM_CLK_PER;
  71                 break;
  72         case IMX8QM_SDHC0_IPG_CLK:
  73         case IMX8QM_SDHC0_CLK:
  74         case IMX8QM_SDHC0_DIV:
  75                 resource = SC_R_SDHC_0;
  76                 pm_clk = SC_PM_CLK_PER;
  77                 break;
  78         case IMX8QM_SDHC1_IPG_CLK:
  79         case IMX8QM_SDHC1_CLK:
  80         case IMX8QM_SDHC1_DIV:
  81                 resource = SC_R_SDHC_1;
  82                 pm_clk = SC_PM_CLK_PER;
  83                 break;
  84         case IMX8QM_SDHC2_IPG_CLK:
  85         case IMX8QM_SDHC2_CLK:
  86         case IMX8QM_SDHC2_DIV:
  87                 resource = SC_R_SDHC_2;
  88                 pm_clk = SC_PM_CLK_PER;
  89                 break;
  90         case IMX8QM_UART0_IPG_CLK:
  91         case IMX8QM_UART0_CLK:
  92                 resource = SC_R_UART_0;
  93                 pm_clk = SC_PM_CLK_PER;
  94                 break;
  95         case IMX8QM_UART1_CLK:
  96                 resource = SC_R_UART_1;
  97                 pm_clk = SC_PM_CLK_PER;
  98                 break;
  99         case IMX8QM_UART2_CLK:
 100                 resource = SC_R_UART_2;
 101                 pm_clk = SC_PM_CLK_PER;
 102                 break;
 103         case IMX8QM_UART3_CLK:
 104                 resource = SC_R_UART_3;
 105                 pm_clk = SC_PM_CLK_PER;
 106                 break;
 107         case IMX8QM_ENET0_IPG_CLK:
 108         case IMX8QM_ENET0_AHB_CLK:
 109         case IMX8QM_ENET0_REF_DIV:
 110         case IMX8QM_ENET0_PTP_CLK:
 111                 resource = SC_R_ENET_0;
 112                 pm_clk = SC_PM_CLK_PER;
 113                 break;
 114         case IMX8QM_ENET1_IPG_CLK:
 115         case IMX8QM_ENET1_AHB_CLK:
 116         case IMX8QM_ENET1_REF_DIV:
 117         case IMX8QM_ENET1_PTP_CLK:
 118                 resource = SC_R_ENET_1;
 119                 pm_clk = SC_PM_CLK_PER;
 120                 break;
 121         default:
 122                 if (clk->id < IMX8QM_UART0_IPG_CLK ||
 123                     clk->id >= IMX8QM_CLK_END) {
 124                         printf("%s(Invalid clk ID #%lu)\n",
 125                                __func__, clk->id);
 126                         return -EINVAL;
 127                 }
 128                 return -ENOTSUPP;
 129         };
 130
 131         ret = sc_pm_get_clock_rate(-1, resource, pm_clk,
 132                                    (sc_pm_clock_rate_t *)&rate);
 133         if (ret) {
 134                 printf("%s err %d\n", __func__, ret);
 135                 return ret;
 136         }
 137
 138         return rate;
 139 }
 140
 141 ulong imx8_clk_set_rate(struct clk *clk, unsigned long rate)
 142 {
 143         sc_pm_clk_t pm_clk;
 144         u32 new_rate = rate;
 145         u16 resource;
 146         int ret;
 147
 148         debug("%s(#%lu), rate: %lu\n", __func__, clk->id, rate);
 149
 150         switch (clk->id) {
 151         case IMX8QM_I2C0_CLK:
 152                 resource = SC_R_I2C_0;
 153                 pm_clk = SC_PM_CLK_PER;
 154                 break;
 155         case IMX8QM_I2C1_CLK:
 156                 resource = SC_R_I2C_1;
 157                 pm_clk = SC_PM_CLK_PER;
 158                 break;
 159         case IMX8QM_I2C2_CLK:
 160                 resource = SC_R_I2C_2;
 161                 pm_clk = SC_PM_CLK_PER;
 162                 break;
 163         case IMX8QM_I2C3_CLK:
 164                 resource = SC_R_I2C_3;
 165                 pm_clk = SC_PM_CLK_PER;
 166                 break;
 167         case IMX8QM_UART0_CLK:
 168                 resource = SC_R_UART_0;
 169                 pm_clk = SC_PM_CLK_PER;
 170                 break;
 171         case IMX8QM_UART1_CLK:
 172                 resource = SC_R_UART_1;
 173                 pm_clk = SC_PM_CLK_PER;
 174                 break;
 175         case IMX8QM_UART2_CLK:
 176                 resource = SC_R_UART_2;
 177                 pm_clk = SC_PM_CLK_PER;
 178                 break;
 179         case IMX8QM_UART3_CLK:
 180                 resource = SC_R_UART_3;
 181                 pm_clk = SC_PM_CLK_PER;
 182                 break;
 183         case IMX8QM_SDHC0_IPG_CLK:
 184         case IMX8QM_SDHC0_CLK:
 185         case IMX8QM_SDHC0_DIV:
 186                 resource = SC_R_SDHC_0;
 187                 pm_clk = SC_PM_CLK_PER;
 188                 break;
 189         case IMX8QM_SDHC1_IPG_CLK:
 190         case IMX8QM_SDHC1_CLK:
 191         case IMX8QM_SDHC1_DIV:
 192                 resource = SC_R_SDHC_1;
 193                 pm_clk = SC_PM_CLK_PER;
 194                 break;
 195         case IMX8QM_SDHC2_IPG_CLK:
 196         case IMX8QM_SDHC2_CLK:
 197         case IMX8QM_SDHC2_DIV:
 198                 resource = SC_R_SDHC_2;
 199                 pm_clk = SC_PM_CLK_PER;
 200                 break;
 201         case IMX8QM_ENET0_IPG_CLK:
 202         case IMX8QM_ENET0_AHB_CLK:
 203         case IMX8QM_ENET0_REF_DIV:
 204         case IMX8QM_ENET0_PTP_CLK:
 205         case IMX8QM_ENET0_ROOT_DIV:
 206                 resource = SC_R_ENET_0;
 207                 pm_clk = SC_PM_CLK_PER;
 208                 break;
 209         case IMX8QM_ENET1_IPG_CLK:
 210         case IMX8QM_ENET1_AHB_CLK:
 211         case IMX8QM_ENET1_REF_DIV:
 212         case IMX8QM_ENET1_PTP_CLK:
 213         case IMX8QM_ENET1_ROOT_DIV:
 214                 resource = SC_R_ENET_1;
 215                 pm_clk = SC_PM_CLK_PER;
 216                 break;
 217         default:
 218                 if (clk->id < IMX8QM_UART0_IPG_CLK ||
 219                     clk->id >= IMX8QM_CLK_END) {
 220                         printf("%s(Invalid clk ID #%lu)\n",
 221                                __func__, clk->id);
 222                         return -EINVAL;
 223                 }
 224                 return -ENOTSUPP;
 225         };
 226
 227         ret = sc_pm_set_clock_rate(-1, resource, pm_clk, &new_rate);
 228         if (ret) {
 229                 printf("%s err %d\n", __func__, ret);
 230                 return ret;
 231         }
 232
 233         return new_rate;
 234 }
 235
 236 int __imx8_clk_enable(struct clk *clk, bool enable)
 237 {
 238         sc_pm_clk_t pm_clk;
 239         u16 resource;
 240         int ret;
 241
 242         debug("%s(#%lu)\n", __func__, clk->id);
 243
 244         switch (clk->id) {
 245         case IMX8QM_I2C0_CLK:
 246                 resource = SC_R_I2C_0;
 247                 pm_clk = SC_PM_CLK_PER;
 248                 break;
 249         case IMX8QM_I2C1_CLK:
 250                 resource = SC_R_I2C_1;
 251                 pm_clk = SC_PM_CLK_PER;
 252                 break;
 253         case IMX8QM_I2C2_CLK:
 254                 resource = SC_R_I2C_2;
 255                 pm_clk = SC_PM_CLK_PER;
 256                 break;
 257         case IMX8QM_I2C3_CLK:
 258                 resource = SC_R_I2C_3;
 259                 pm_clk = SC_PM_CLK_PER;
 260                 break;
 261         case IMX8QM_UART0_CLK:
 262                 resource = SC_R_UART_0;
 263                 pm_clk = SC_PM_CLK_PER;
 264                 break;
 265         case IMX8QM_UART1_CLK:
 266                 resource = SC_R_UART_1;
 267                 pm_clk = SC_PM_CLK_PER;
 268                 break;
 269         case IMX8QM_UART2_CLK:
 270                 resource = SC_R_UART_2;
 271                 pm_clk = SC_PM_CLK_PER;
 272                 break;
 273         case IMX8QM_UART3_CLK:
 274                 resource = SC_R_UART_3;
 275                 pm_clk = SC_PM_CLK_PER;
 276                 break;
 277         case IMX8QM_SDHC0_IPG_CLK:
 278         case IMX8QM_SDHC0_CLK:
 279         case IMX8QM_SDHC0_DIV:
 280                 resource = SC_R_SDHC_0;
 281                 pm_clk = SC_PM_CLK_PER;
 282                 break;
 283         case IMX8QM_SDHC1_IPG_CLK:
 284         case IMX8QM_SDHC1_CLK:
 285         case IMX8QM_SDHC1_DIV:
 286                 resource = SC_R_SDHC_1;
 287                 pm_clk = SC_PM_CLK_PER;
 288                 break;
 289         case IMX8QM_SDHC2_IPG_CLK:
 290         case IMX8QM_SDHC2_CLK:
 291         case IMX8QM_SDHC2_DIV:
 292                 resource = SC_R_SDHC_2;
 293                 pm_clk = SC_PM_CLK_PER;
 294                 break;
 295         case IMX8QM_ENET0_IPG_CLK:
 296         case IMX8QM_ENET0_AHB_CLK:
 297         case IMX8QM_ENET0_REF_DIV:
 298         case IMX8QM_ENET0_PTP_CLK:
 299                 resource = SC_R_ENET_0;
 300                 pm_clk = SC_PM_CLK_PER;
 301                 break;
 302         case IMX8QM_ENET1_IPG_CLK:
 303         case IMX8QM_ENET1_AHB_CLK:
 304         case IMX8QM_ENET1_REF_DIV:
 305         case IMX8QM_ENET1_PTP_CLK:
 306                 resource = SC_R_ENET_1;
 307                 pm_clk = SC_PM_CLK_PER;
 308                 break;
 309         default:
 310                 if (clk->id < IMX8QM_UART0_IPG_CLK ||
 311                     clk->id >= IMX8QM_CLK_END) {
 312                         printf("%s(Invalid clk ID #%lu)\n",
 313                                __func__, clk->id);
 314                         return -EINVAL;
 315                 }
 316                 return -ENOTSUPP;
 317         }
 318
 319         ret = sc_pm_clock_enable(-1, resource, pm_clk, enable, 0);
 320         if (ret) {
 321                 printf("%s err %d\n", __func__, ret);
 322                 return ret;
 323         }
 324
 325         return 0;
 326 }