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