1 /* 2 * AM43XX Clock init 3 * 4 * Copyright (C) 2013 Texas Instruments, Inc 5 * Tero Kristo (t-kristo@ti.com) 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation version 2. 10 * 11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any 12 * kind, whether express or implied; without even the implied warranty 13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17 #include <linux/kernel.h> 18 #include <linux/list.h> 19 #include <linux/clk.h> 20 #include <linux/clk-provider.h> 21 #include <linux/clk/ti.h> 22 #include <dt-bindings/clock/am4.h> 23 24 #include "clock.h" 25 26 static const struct omap_clkctrl_reg_data am4_l3s_tsc_clkctrl_regs[] __initconst = { 27 { AM4_L3S_TSC_ADC_TSC_CLKCTRL, NULL, CLKF_SW_SUP, "adc_tsc_fck" }, 28 { 0 }, 29 }; 30 31 static const char * const am4_synctimer_32kclk_parents[] __initconst = { 32 "mux_synctimer32k_ck", 33 NULL, 34 }; 35 36 static const struct omap_clkctrl_bit_data am4_counter_32k_bit_data[] __initconst = { 37 { 8, TI_CLK_GATE, am4_synctimer_32kclk_parents, NULL }, 38 { 0 }, 39 }; 40 41 static const struct omap_clkctrl_reg_data am4_l4_wkup_aon_clkctrl_regs[] __initconst = { 42 { AM4_L4_WKUP_AON_WKUP_M3_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "sys_clkin_ck" }, 43 { AM4_L4_WKUP_AON_COUNTER_32K_CLKCTRL, am4_counter_32k_bit_data, CLKF_SW_SUP, "l4-wkup-aon-clkctrl:0008:8" }, 44 { 0 }, 45 }; 46 47 static const char * const am4_gpio0_dbclk_parents[] __initconst = { 48 "gpio0_dbclk_mux_ck", 49 NULL, 50 }; 51 52 static const struct omap_clkctrl_bit_data am4_gpio1_bit_data[] __initconst = { 53 { 8, TI_CLK_GATE, am4_gpio0_dbclk_parents, NULL }, 54 { 0 }, 55 }; 56 57 static const struct omap_clkctrl_reg_data am4_l4_wkup_clkctrl_regs[] __initconst = { 58 { AM4_L4_WKUP_L4_WKUP_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin_ck" }, 59 { AM4_L4_WKUP_TIMER1_CLKCTRL, NULL, CLKF_SW_SUP, "timer1_fck" }, 60 { AM4_L4_WKUP_WD_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "wdt1_fck" }, 61 { AM4_L4_WKUP_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck" }, 62 { AM4_L4_WKUP_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_wkupdm_ck" }, 63 { AM4_L4_WKUP_SMARTREFLEX0_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex0_fck" }, 64 { AM4_L4_WKUP_SMARTREFLEX1_CLKCTRL, NULL, CLKF_SW_SUP, "smartreflex1_fck" }, 65 { AM4_L4_WKUP_CONTROL_CLKCTRL, NULL, CLKF_SW_SUP, "sys_clkin_ck" }, 66 { AM4_L4_WKUP_GPIO1_CLKCTRL, am4_gpio1_bit_data, CLKF_SW_SUP, "sys_clkin_ck" }, 67 { 0 }, 68 }; 69 70 static const struct omap_clkctrl_reg_data am4_mpu_clkctrl_regs[] __initconst = { 71 { AM4_MPU_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_mpu_m2_ck" }, 72 { 0 }, 73 }; 74 75 static const struct omap_clkctrl_reg_data am4_gfx_l3_clkctrl_regs[] __initconst = { 76 { AM4_GFX_L3_GFX_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "gfx_fck_div_ck" }, 77 { 0 }, 78 }; 79 80 static const struct omap_clkctrl_reg_data am4_l4_rtc_clkctrl_regs[] __initconst = { 81 { AM4_L4_RTC_RTC_CLKCTRL, NULL, CLKF_SW_SUP, "clkdiv32k_ick" }, 82 { 0 }, 83 }; 84 85 static const struct omap_clkctrl_reg_data am4_l3_clkctrl_regs[] __initconst = { 86 { AM4_L3_L3_MAIN_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 87 { AM4_L3_AES_CLKCTRL, NULL, CLKF_SW_SUP, "aes0_fck" }, 88 { AM4_L3_DES_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 89 { AM4_L3_L3_INSTR_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 90 { AM4_L3_OCMCRAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 91 { AM4_L3_SHAM_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 92 { AM4_L3_TPCC_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 93 { AM4_L3_TPTC0_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 94 { AM4_L3_TPTC1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 95 { AM4_L3_TPTC2_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 96 { AM4_L3_L4_HS_CLKCTRL, NULL, CLKF_SW_SUP, "l4hs_gclk" }, 97 { 0 }, 98 }; 99 100 static const char * const am4_usb_otg_ss0_refclk960m_parents[] __initconst = { 101 "dpll_per_clkdcoldo", 102 NULL, 103 }; 104 105 static const struct omap_clkctrl_bit_data am4_usb_otg_ss0_bit_data[] __initconst = { 106 { 8, TI_CLK_GATE, am4_usb_otg_ss0_refclk960m_parents, NULL }, 107 { 0 }, 108 }; 109 110 static const struct omap_clkctrl_bit_data am4_usb_otg_ss1_bit_data[] __initconst = { 111 { 8, TI_CLK_GATE, am4_usb_otg_ss0_refclk960m_parents, NULL }, 112 { 0 }, 113 }; 114 115 static const struct omap_clkctrl_reg_data am4_l3s_clkctrl_regs[] __initconst = { 116 { AM4_L3S_VPFE0_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 117 { AM4_L3S_VPFE1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_gclk" }, 118 { AM4_L3S_GPMC_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk" }, 119 { AM4_L3S_MCASP0_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp0_fck" }, 120 { AM4_L3S_MCASP1_CLKCTRL, NULL, CLKF_SW_SUP, "mcasp1_fck" }, 121 { AM4_L3S_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" }, 122 { AM4_L3S_QSPI_CLKCTRL, NULL, CLKF_SW_SUP, "l3s_gclk" }, 123 { AM4_L3S_USB_OTG_SS0_CLKCTRL, am4_usb_otg_ss0_bit_data, CLKF_SW_SUP, "l3s_gclk" }, 124 { AM4_L3S_USB_OTG_SS1_CLKCTRL, am4_usb_otg_ss1_bit_data, CLKF_SW_SUP, "l3s_gclk" }, 125 { 0 }, 126 }; 127 128 static const struct omap_clkctrl_reg_data am4_pruss_ocp_clkctrl_regs[] __initconst = { 129 { AM4_PRUSS_OCP_PRUSS_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_NO_IDLEST, "pruss_ocp_gclk" }, 130 { 0 }, 131 }; 132 133 static const char * const am4_gpio1_dbclk_parents[] __initconst = { 134 "clkdiv32k_ick", 135 NULL, 136 }; 137 138 static const struct omap_clkctrl_bit_data am4_gpio2_bit_data[] __initconst = { 139 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL }, 140 { 0 }, 141 }; 142 143 static const struct omap_clkctrl_bit_data am4_gpio3_bit_data[] __initconst = { 144 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL }, 145 { 0 }, 146 }; 147 148 static const struct omap_clkctrl_bit_data am4_gpio4_bit_data[] __initconst = { 149 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL }, 150 { 0 }, 151 }; 152 153 static const struct omap_clkctrl_bit_data am4_gpio5_bit_data[] __initconst = { 154 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL }, 155 { 0 }, 156 }; 157 158 static const struct omap_clkctrl_bit_data am4_gpio6_bit_data[] __initconst = { 159 { 8, TI_CLK_GATE, am4_gpio1_dbclk_parents, NULL }, 160 { 0 }, 161 }; 162 163 static const struct omap_clkctrl_reg_data am4_l4ls_clkctrl_regs[] __initconst = { 164 { AM4_L4LS_L4_LS_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 165 { AM4_L4LS_D_CAN0_CLKCTRL, NULL, CLKF_SW_SUP, "dcan0_fck" }, 166 { AM4_L4LS_D_CAN1_CLKCTRL, NULL, CLKF_SW_SUP, "dcan1_fck" }, 167 { AM4_L4LS_EPWMSS0_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 168 { AM4_L4LS_EPWMSS1_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 169 { AM4_L4LS_EPWMSS2_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 170 { AM4_L4LS_EPWMSS3_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 171 { AM4_L4LS_EPWMSS4_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 172 { AM4_L4LS_EPWMSS5_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 173 { AM4_L4LS_ELM_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 174 { AM4_L4LS_GPIO2_CLKCTRL, am4_gpio2_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, 175 { AM4_L4LS_GPIO3_CLKCTRL, am4_gpio3_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, 176 { AM4_L4LS_GPIO4_CLKCTRL, am4_gpio4_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, 177 { AM4_L4LS_GPIO5_CLKCTRL, am4_gpio5_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, 178 { AM4_L4LS_GPIO6_CLKCTRL, am4_gpio6_bit_data, CLKF_SW_SUP, "l4ls_gclk" }, 179 { AM4_L4LS_HDQ1W_CLKCTRL, NULL, CLKF_SW_SUP, "func_12m_clk" }, 180 { AM4_L4LS_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 181 { AM4_L4LS_I2C3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 182 { AM4_L4LS_MAILBOX_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 183 { AM4_L4LS_MMC1_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" }, 184 { AM4_L4LS_MMC2_CLKCTRL, NULL, CLKF_SW_SUP, "mmc_clk" }, 185 { AM4_L4LS_RNG_CLKCTRL, NULL, CLKF_SW_SUP, "rng_fck" }, 186 { AM4_L4LS_SPI0_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 187 { AM4_L4LS_SPI1_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 188 { AM4_L4LS_SPI2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 189 { AM4_L4LS_SPI3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 190 { AM4_L4LS_SPI4_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 191 { AM4_L4LS_SPINLOCK_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 192 { AM4_L4LS_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "timer2_fck" }, 193 { AM4_L4LS_TIMER3_CLKCTRL, NULL, CLKF_SW_SUP, "timer3_fck" }, 194 { AM4_L4LS_TIMER4_CLKCTRL, NULL, CLKF_SW_SUP, "timer4_fck" }, 195 { AM4_L4LS_TIMER5_CLKCTRL, NULL, CLKF_SW_SUP, "timer5_fck" }, 196 { AM4_L4LS_TIMER6_CLKCTRL, NULL, CLKF_SW_SUP, "timer6_fck" }, 197 { AM4_L4LS_TIMER7_CLKCTRL, NULL, CLKF_SW_SUP, "timer7_fck" }, 198 { AM4_L4LS_TIMER8_CLKCTRL, NULL, CLKF_SW_SUP, "timer8_fck" }, 199 { AM4_L4LS_TIMER9_CLKCTRL, NULL, CLKF_SW_SUP, "timer9_fck" }, 200 { AM4_L4LS_TIMER10_CLKCTRL, NULL, CLKF_SW_SUP, "timer10_fck" }, 201 { AM4_L4LS_TIMER11_CLKCTRL, NULL, CLKF_SW_SUP, "timer11_fck" }, 202 { AM4_L4LS_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 203 { AM4_L4LS_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 204 { AM4_L4LS_UART4_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 205 { AM4_L4LS_UART5_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 206 { AM4_L4LS_UART6_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_per_m2_div4_ck" }, 207 { AM4_L4LS_OCP2SCP0_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 208 { AM4_L4LS_OCP2SCP1_CLKCTRL, NULL, CLKF_SW_SUP, "l4ls_gclk" }, 209 { 0 }, 210 }; 211 212 static const struct omap_clkctrl_reg_data am4_emif_clkctrl_regs[] __initconst = { 213 { AM4_EMIF_EMIF_CLKCTRL, NULL, CLKF_SW_SUP, "dpll_ddr_m2_ck" }, 214 { 0 }, 215 }; 216 217 static const struct omap_clkctrl_reg_data am4_dss_clkctrl_regs[] __initconst = { 218 { AM4_DSS_DSS_CORE_CLKCTRL, NULL, CLKF_SW_SUP | CLKF_SET_RATE_PARENT, "disp_clk" }, 219 { 0 }, 220 }; 221 222 static const struct omap_clkctrl_reg_data am4_cpsw_125mhz_clkctrl_regs[] __initconst = { 223 { AM4_CPSW_125MHZ_CPGMAC0_CLKCTRL, NULL, CLKF_SW_SUP, "cpsw_125mhz_gclk" }, 224 { 0 }, 225 }; 226 227 const struct omap_clkctrl_data am4_clkctrl_data[] __initconst = { 228 { 0x44df2920, am4_l3s_tsc_clkctrl_regs }, 229 { 0x44df2a28, am4_l4_wkup_aon_clkctrl_regs }, 230 { 0x44df2a20, am4_l4_wkup_clkctrl_regs }, 231 { 0x44df8320, am4_mpu_clkctrl_regs }, 232 { 0x44df8420, am4_gfx_l3_clkctrl_regs }, 233 { 0x44df8520, am4_l4_rtc_clkctrl_regs }, 234 { 0x44df8820, am4_l3_clkctrl_regs }, 235 { 0x44df8868, am4_l3s_clkctrl_regs }, 236 { 0x44df8b20, am4_pruss_ocp_clkctrl_regs }, 237 { 0x44df8c20, am4_l4ls_clkctrl_regs }, 238 { 0x44df8f20, am4_emif_clkctrl_regs }, 239 { 0x44df9220, am4_dss_clkctrl_regs }, 240 { 0x44df9320, am4_cpsw_125mhz_clkctrl_regs }, 241 { 0 }, 242 }; 243 244 const struct omap_clkctrl_data am438x_clkctrl_data[] __initconst = { 245 { 0x44df2920, am4_l3s_tsc_clkctrl_regs }, 246 { 0x44df2a28, am4_l4_wkup_aon_clkctrl_regs }, 247 { 0x44df2a20, am4_l4_wkup_clkctrl_regs }, 248 { 0x44df8320, am4_mpu_clkctrl_regs }, 249 { 0x44df8420, am4_gfx_l3_clkctrl_regs }, 250 { 0x44df8820, am4_l3_clkctrl_regs }, 251 { 0x44df8868, am4_l3s_clkctrl_regs }, 252 { 0x44df8b20, am4_pruss_ocp_clkctrl_regs }, 253 { 0x44df8c20, am4_l4ls_clkctrl_regs }, 254 { 0x44df8f20, am4_emif_clkctrl_regs }, 255 { 0x44df9220, am4_dss_clkctrl_regs }, 256 { 0x44df9320, am4_cpsw_125mhz_clkctrl_regs }, 257 { 0 }, 258 }; 259 260 static struct ti_dt_clk am43xx_clks[] = { 261 DT_CLK(NULL, "timer_32k_ck", "clkdiv32k_ick"), 262 DT_CLK(NULL, "timer_sys_ck", "sys_clkin_ck"), 263 DT_CLK(NULL, "gpio0_dbclk", "l4-wkup-clkctrl:0148:8"), 264 DT_CLK(NULL, "gpio1_dbclk", "l4ls-clkctrl:0058:8"), 265 DT_CLK(NULL, "gpio2_dbclk", "l4ls-clkctrl:0060:8"), 266 DT_CLK(NULL, "gpio3_dbclk", "l4ls-clkctrl:0068:8"), 267 DT_CLK(NULL, "gpio4_dbclk", "l4ls-clkctrl:0070:8"), 268 DT_CLK(NULL, "gpio5_dbclk", "l4ls-clkctrl:0078:8"), 269 DT_CLK(NULL, "synctimer_32kclk", "l4-wkup-aon-clkctrl:0008:8"), 270 DT_CLK(NULL, "usb_otg_ss0_refclk960m", "l3s-clkctrl:01f8:8"), 271 DT_CLK(NULL, "usb_otg_ss1_refclk960m", "l3s-clkctrl:0200:8"), 272 { .node_name = NULL }, 273 }; 274 275 static const char *enable_init_clks[] = { 276 /* AM4_L3_L3_MAIN_CLKCTRL, needed during suspend */ 277 "l3-clkctrl:0000:0", 278 }; 279 280 int __init am43xx_dt_clk_init(void) 281 { 282 struct clk *clk1, *clk2; 283 284 if (ti_clk_get_features()->flags & TI_CLK_CLKCTRL_COMPAT) 285 ti_dt_clocks_register(am43xx_compat_clks); 286 else 287 ti_dt_clocks_register(am43xx_clks); 288 289 omap2_clk_disable_autoidle_all(); 290 291 omap2_clk_enable_init_clocks(enable_init_clks, 292 ARRAY_SIZE(enable_init_clks)); 293 294 ti_clk_add_aliases(); 295 296 /* 297 * cpsw_cpts_rft_clk has got the choice of 3 clocksources 298 * dpll_core_m4_ck, dpll_core_m5_ck and dpll_disp_m2_ck. 299 * By default dpll_core_m4_ck is selected, witn this as clock 300 * source the CPTS doesnot work properly. It gives clockcheck errors 301 * while running PTP. 302 * clockcheck: clock jumped backward or running slower than expected! 303 * By selecting dpll_core_m5_ck as the clocksource fixes this issue. 304 * In AM335x dpll_core_m5_ck is the default clocksource. 305 */ 306 clk1 = clk_get_sys(NULL, "cpsw_cpts_rft_clk"); 307 clk2 = clk_get_sys(NULL, "dpll_core_m5_ck"); 308 clk_set_parent(clk1, clk2); 309 310 return 0; 311 } 312