1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/clk-provider.h> 3 #include <linux/mfd/syscon.h> 4 #include <linux/slab.h> 5 6 #include <dt-bindings/clock/at91.h> 7 8 #include "pmc.h" 9 10 static const struct clk_master_characteristics mck_characteristics = { 11 .output = { .min = 124000000, .max = 166000000 }, 12 .divisors = { 1, 2, 4, 3 }, 13 }; 14 15 static u8 plla_out[] = { 0 }; 16 17 static u16 plla_icpll[] = { 0 }; 18 19 static const struct clk_range plla_outputs[] = { 20 { .min = 600000000, .max = 1200000000 }, 21 }; 22 23 static const struct clk_pll_characteristics plla_characteristics = { 24 .input = { .min = 12000000, .max = 24000000 }, 25 .num_output = ARRAY_SIZE(plla_outputs), 26 .output = plla_outputs, 27 .icpll = plla_icpll, 28 .out = plla_out, 29 }; 30 31 static const struct clk_pcr_layout sama5d2_pcr_layout = { 32 .offset = 0x10c, 33 .cmd = BIT(12), 34 .gckcss_mask = GENMASK(10, 8), 35 .pid_mask = GENMASK(6, 0), 36 }; 37 38 static const struct { 39 char *n; 40 char *p; 41 u8 id; 42 } sama5d2_systemck[] = { 43 { .n = "ddrck", .p = "masterck", .id = 2 }, 44 { .n = "lcdck", .p = "masterck", .id = 3 }, 45 { .n = "uhpck", .p = "usbck", .id = 6 }, 46 { .n = "udpck", .p = "usbck", .id = 7 }, 47 { .n = "pck0", .p = "prog0", .id = 8 }, 48 { .n = "pck1", .p = "prog1", .id = 9 }, 49 { .n = "pck2", .p = "prog2", .id = 10 }, 50 { .n = "iscck", .p = "masterck", .id = 18 }, 51 }; 52 53 static const struct { 54 char *n; 55 u8 id; 56 struct clk_range r; 57 } sama5d2_periph32ck[] = { 58 { .n = "macb0_clk", .id = 5, .r = { .min = 0, .max = 83000000 }, }, 59 { .n = "tdes_clk", .id = 11, .r = { .min = 0, .max = 83000000 }, }, 60 { .n = "matrix1_clk", .id = 14, }, 61 { .n = "hsmc_clk", .id = 17, }, 62 { .n = "pioA_clk", .id = 18, .r = { .min = 0, .max = 83000000 }, }, 63 { .n = "flx0_clk", .id = 19, .r = { .min = 0, .max = 83000000 }, }, 64 { .n = "flx1_clk", .id = 20, .r = { .min = 0, .max = 83000000 }, }, 65 { .n = "flx2_clk", .id = 21, .r = { .min = 0, .max = 83000000 }, }, 66 { .n = "flx3_clk", .id = 22, .r = { .min = 0, .max = 83000000 }, }, 67 { .n = "flx4_clk", .id = 23, .r = { .min = 0, .max = 83000000 }, }, 68 { .n = "uart0_clk", .id = 24, .r = { .min = 0, .max = 83000000 }, }, 69 { .n = "uart1_clk", .id = 25, .r = { .min = 0, .max = 83000000 }, }, 70 { .n = "uart2_clk", .id = 26, .r = { .min = 0, .max = 83000000 }, }, 71 { .n = "uart3_clk", .id = 27, .r = { .min = 0, .max = 83000000 }, }, 72 { .n = "uart4_clk", .id = 28, .r = { .min = 0, .max = 83000000 }, }, 73 { .n = "twi0_clk", .id = 29, .r = { .min = 0, .max = 83000000 }, }, 74 { .n = "twi1_clk", .id = 30, .r = { .min = 0, .max = 83000000 }, }, 75 { .n = "spi0_clk", .id = 33, .r = { .min = 0, .max = 83000000 }, }, 76 { .n = "spi1_clk", .id = 34, .r = { .min = 0, .max = 83000000 }, }, 77 { .n = "tcb0_clk", .id = 35, .r = { .min = 0, .max = 83000000 }, }, 78 { .n = "tcb1_clk", .id = 36, .r = { .min = 0, .max = 83000000 }, }, 79 { .n = "pwm_clk", .id = 38, .r = { .min = 0, .max = 83000000 }, }, 80 { .n = "adc_clk", .id = 40, .r = { .min = 0, .max = 83000000 }, }, 81 { .n = "uhphs_clk", .id = 41, .r = { .min = 0, .max = 83000000 }, }, 82 { .n = "udphs_clk", .id = 42, .r = { .min = 0, .max = 83000000 }, }, 83 { .n = "ssc0_clk", .id = 43, .r = { .min = 0, .max = 83000000 }, }, 84 { .n = "ssc1_clk", .id = 44, .r = { .min = 0, .max = 83000000 }, }, 85 { .n = "trng_clk", .id = 47, .r = { .min = 0, .max = 83000000 }, }, 86 { .n = "pdmic_clk", .id = 48, .r = { .min = 0, .max = 83000000 }, }, 87 { .n = "securam_clk", .id = 51, }, 88 { .n = "i2s0_clk", .id = 54, .r = { .min = 0, .max = 83000000 }, }, 89 { .n = "i2s1_clk", .id = 55, .r = { .min = 0, .max = 83000000 }, }, 90 { .n = "can0_clk", .id = 56, .r = { .min = 0, .max = 83000000 }, }, 91 { .n = "can1_clk", .id = 57, .r = { .min = 0, .max = 83000000 }, }, 92 { .n = "ptc_clk", .id = 58, .r = { .min = 0, .max = 83000000 }, }, 93 { .n = "classd_clk", .id = 59, .r = { .min = 0, .max = 83000000 }, }, 94 }; 95 96 static const struct { 97 char *n; 98 u8 id; 99 } sama5d2_periphck[] = { 100 { .n = "dma0_clk", .id = 6, }, 101 { .n = "dma1_clk", .id = 7, }, 102 { .n = "aes_clk", .id = 9, }, 103 { .n = "aesb_clk", .id = 10, }, 104 { .n = "sha_clk", .id = 12, }, 105 { .n = "mpddr_clk", .id = 13, }, 106 { .n = "matrix0_clk", .id = 15, }, 107 { .n = "sdmmc0_hclk", .id = 31, }, 108 { .n = "sdmmc1_hclk", .id = 32, }, 109 { .n = "lcdc_clk", .id = 45, }, 110 { .n = "isc_clk", .id = 46, }, 111 { .n = "qspi0_clk", .id = 52, }, 112 { .n = "qspi1_clk", .id = 53, }, 113 }; 114 115 static const struct { 116 char *n; 117 u8 id; 118 struct clk_range r; 119 bool pll; 120 } sama5d2_gck[] = { 121 { .n = "sdmmc0_gclk", .id = 31, }, 122 { .n = "sdmmc1_gclk", .id = 32, }, 123 { .n = "tcb0_gclk", .id = 35, .r = { .min = 0, .max = 83000000 }, }, 124 { .n = "tcb1_gclk", .id = 36, .r = { .min = 0, .max = 83000000 }, }, 125 { .n = "pwm_gclk", .id = 38, .r = { .min = 0, .max = 83000000 }, }, 126 { .n = "isc_gclk", .id = 46, }, 127 { .n = "pdmic_gclk", .id = 48, }, 128 { .n = "i2s0_gclk", .id = 54, .pll = true }, 129 { .n = "i2s1_gclk", .id = 55, .pll = true }, 130 { .n = "can0_gclk", .id = 56, .r = { .min = 0, .max = 80000000 }, }, 131 { .n = "can1_gclk", .id = 57, .r = { .min = 0, .max = 80000000 }, }, 132 { .n = "classd_gclk", .id = 59, .r = { .min = 0, .max = 100000000 }, 133 .pll = true }, 134 }; 135 136 static const struct clk_programmable_layout sama5d2_programmable_layout = { 137 .pres_mask = 0xff, 138 .pres_shift = 4, 139 .css_mask = 0x7, 140 .have_slck_mck = 0, 141 .is_pres_direct = 1, 142 }; 143 144 static void __init sama5d2_pmc_setup(struct device_node *np) 145 { 146 struct clk_range range = CLK_RANGE(0, 0); 147 const char *slck_name, *mainxtal_name; 148 struct pmc_data *sama5d2_pmc; 149 const char *parent_names[6]; 150 struct regmap *regmap, *regmap_sfr; 151 struct clk_hw *hw; 152 int i; 153 bool bypass; 154 155 i = of_property_match_string(np, "clock-names", "slow_clk"); 156 if (i < 0) 157 return; 158 159 slck_name = of_clk_get_parent_name(np, i); 160 161 i = of_property_match_string(np, "clock-names", "main_xtal"); 162 if (i < 0) 163 return; 164 mainxtal_name = of_clk_get_parent_name(np, i); 165 166 regmap = device_node_to_regmap(np); 167 if (IS_ERR(regmap)) 168 return; 169 170 sama5d2_pmc = pmc_data_allocate(PMC_AUDIOPLLCK + 1, 171 nck(sama5d2_systemck), 172 nck(sama5d2_periph32ck), 173 nck(sama5d2_gck), 3); 174 if (!sama5d2_pmc) 175 return; 176 177 hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000, 178 100000000); 179 if (IS_ERR(hw)) 180 goto err_free; 181 182 bypass = of_property_read_bool(np, "atmel,osc-bypass"); 183 184 hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name, 185 bypass); 186 if (IS_ERR(hw)) 187 goto err_free; 188 189 parent_names[0] = "main_rc_osc"; 190 parent_names[1] = "main_osc"; 191 hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2); 192 if (IS_ERR(hw)) 193 goto err_free; 194 195 sama5d2_pmc->chws[PMC_MAIN] = hw; 196 197 hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0, 198 &sama5d3_pll_layout, &plla_characteristics); 199 if (IS_ERR(hw)) 200 goto err_free; 201 202 hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack"); 203 if (IS_ERR(hw)) 204 goto err_free; 205 206 sama5d2_pmc->chws[PMC_PLLACK] = hw; 207 208 hw = at91_clk_register_audio_pll_frac(regmap, "audiopll_fracck", 209 "mainck"); 210 if (IS_ERR(hw)) 211 goto err_free; 212 213 hw = at91_clk_register_audio_pll_pad(regmap, "audiopll_padck", 214 "audiopll_fracck"); 215 if (IS_ERR(hw)) 216 goto err_free; 217 218 hw = at91_clk_register_audio_pll_pmc(regmap, "audiopll_pmcck", 219 "audiopll_fracck"); 220 if (IS_ERR(hw)) 221 goto err_free; 222 223 sama5d2_pmc->chws[PMC_AUDIOPLLCK] = hw; 224 225 regmap_sfr = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr"); 226 if (IS_ERR(regmap_sfr)) 227 regmap_sfr = NULL; 228 229 hw = at91_clk_register_utmi(regmap, regmap_sfr, "utmick", "mainck"); 230 if (IS_ERR(hw)) 231 goto err_free; 232 233 sama5d2_pmc->chws[PMC_UTMI] = hw; 234 235 parent_names[0] = slck_name; 236 parent_names[1] = "mainck"; 237 parent_names[2] = "plladivck"; 238 parent_names[3] = "utmick"; 239 hw = at91_clk_register_master(regmap, "masterck", 4, parent_names, 240 &at91sam9x5_master_layout, 241 &mck_characteristics); 242 if (IS_ERR(hw)) 243 goto err_free; 244 245 sama5d2_pmc->chws[PMC_MCK] = hw; 246 247 hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck"); 248 if (IS_ERR(hw)) 249 goto err_free; 250 251 sama5d2_pmc->chws[PMC_MCK2] = hw; 252 253 parent_names[0] = "plladivck"; 254 parent_names[1] = "utmick"; 255 hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2); 256 if (IS_ERR(hw)) 257 goto err_free; 258 259 parent_names[0] = slck_name; 260 parent_names[1] = "mainck"; 261 parent_names[2] = "plladivck"; 262 parent_names[3] = "utmick"; 263 parent_names[4] = "masterck"; 264 parent_names[5] = "audiopll_pmcck"; 265 for (i = 0; i < 3; i++) { 266 char name[6]; 267 268 snprintf(name, sizeof(name), "prog%d", i); 269 270 hw = at91_clk_register_programmable(regmap, name, 271 parent_names, 6, i, 272 &sama5d2_programmable_layout); 273 if (IS_ERR(hw)) 274 goto err_free; 275 276 sama5d2_pmc->pchws[i] = hw; 277 } 278 279 for (i = 0; i < ARRAY_SIZE(sama5d2_systemck); i++) { 280 hw = at91_clk_register_system(regmap, sama5d2_systemck[i].n, 281 sama5d2_systemck[i].p, 282 sama5d2_systemck[i].id); 283 if (IS_ERR(hw)) 284 goto err_free; 285 286 sama5d2_pmc->shws[sama5d2_systemck[i].id] = hw; 287 } 288 289 for (i = 0; i < ARRAY_SIZE(sama5d2_periphck); i++) { 290 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock, 291 &sama5d2_pcr_layout, 292 sama5d2_periphck[i].n, 293 "masterck", 294 sama5d2_periphck[i].id, 295 &range); 296 if (IS_ERR(hw)) 297 goto err_free; 298 299 sama5d2_pmc->phws[sama5d2_periphck[i].id] = hw; 300 } 301 302 for (i = 0; i < ARRAY_SIZE(sama5d2_periph32ck); i++) { 303 hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock, 304 &sama5d2_pcr_layout, 305 sama5d2_periph32ck[i].n, 306 "h32mxck", 307 sama5d2_periph32ck[i].id, 308 &sama5d2_periph32ck[i].r); 309 if (IS_ERR(hw)) 310 goto err_free; 311 312 sama5d2_pmc->phws[sama5d2_periph32ck[i].id] = hw; 313 } 314 315 parent_names[0] = slck_name; 316 parent_names[1] = "mainck"; 317 parent_names[2] = "plladivck"; 318 parent_names[3] = "utmick"; 319 parent_names[4] = "masterck"; 320 parent_names[5] = "audiopll_pmcck"; 321 for (i = 0; i < ARRAY_SIZE(sama5d2_gck); i++) { 322 hw = at91_clk_register_generated(regmap, &pmc_pcr_lock, 323 &sama5d2_pcr_layout, 324 sama5d2_gck[i].n, 325 parent_names, 6, 326 sama5d2_gck[i].id, 327 sama5d2_gck[i].pll, 328 &sama5d2_gck[i].r); 329 if (IS_ERR(hw)) 330 goto err_free; 331 332 sama5d2_pmc->ghws[sama5d2_gck[i].id] = hw; 333 } 334 335 if (regmap_sfr) { 336 parent_names[0] = "i2s0_clk"; 337 parent_names[1] = "i2s0_gclk"; 338 hw = at91_clk_i2s_mux_register(regmap_sfr, "i2s0_muxclk", 339 parent_names, 2, 0); 340 if (IS_ERR(hw)) 341 goto err_free; 342 343 sama5d2_pmc->chws[PMC_I2S0_MUX] = hw; 344 345 parent_names[0] = "i2s1_clk"; 346 parent_names[1] = "i2s1_gclk"; 347 hw = at91_clk_i2s_mux_register(regmap_sfr, "i2s1_muxclk", 348 parent_names, 2, 1); 349 if (IS_ERR(hw)) 350 goto err_free; 351 352 sama5d2_pmc->chws[PMC_I2S1_MUX] = hw; 353 } 354 355 of_clk_add_hw_provider(np, of_clk_hw_pmc_get, sama5d2_pmc); 356 357 return; 358 359 err_free: 360 kfree(sama5d2_pmc); 361 } 362 CLK_OF_DECLARE_DRIVER(sama5d2_pmc, "atmel,sama5d2-pmc", sama5d2_pmc_setup); 363