1 /* 2 * Copyright (c) 2011-2015 Samsung Electronics Co., Ltd. 3 * http://www.samsung.com/ 4 * 5 * EXYNOS5250 - CPU PMU (Power Management Unit) support 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12 #include <linux/soc/samsung/exynos-regs-pmu.h> 13 #include <linux/soc/samsung/exynos-pmu.h> 14 15 #include "exynos-pmu.h" 16 17 static const struct exynos_pmu_conf exynos5250_pmu_config[] = { 18 /* { .offset = offset, .val = { AFTR, LPA, SLEEP } */ 19 { EXYNOS5_ARM_CORE0_SYS_PWR_REG, { 0x0, 0x0, 0x2} }, 20 { EXYNOS5_DIS_IRQ_ARM_CORE0_LOCAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 21 { EXYNOS5_DIS_IRQ_ARM_CORE0_CENTRAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 22 { EXYNOS5_ARM_CORE1_SYS_PWR_REG, { 0x0, 0x0, 0x2} }, 23 { EXYNOS5_DIS_IRQ_ARM_CORE1_LOCAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 24 { EXYNOS5_DIS_IRQ_ARM_CORE1_CENTRAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 25 { EXYNOS5_FSYS_ARM_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 26 { EXYNOS5_DIS_IRQ_FSYS_ARM_CENTRAL_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 27 { EXYNOS5_ISP_ARM_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 28 { EXYNOS5_DIS_IRQ_ISP_ARM_LOCAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 29 { EXYNOS5_DIS_IRQ_ISP_ARM_CENTRAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 30 { EXYNOS5_ARM_COMMON_SYS_PWR_REG, { 0x0, 0x0, 0x2} }, 31 { EXYNOS5_ARM_L2_SYS_PWR_REG, { 0x3, 0x3, 0x3} }, 32 { EXYNOS5_ARM_L2_OPTION, { 0x10, 0x10, 0x0 } }, 33 { EXYNOS5_CMU_ACLKSTOP_SYS_PWR_REG, { 0x1, 0x0, 0x1} }, 34 { EXYNOS5_CMU_SCLKSTOP_SYS_PWR_REG, { 0x1, 0x0, 0x1} }, 35 { EXYNOS5_CMU_RESET_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 36 { EXYNOS5_CMU_ACLKSTOP_SYSMEM_SYS_PWR_REG, { 0x1, 0x0, 0x1} }, 37 { EXYNOS5_CMU_SCLKSTOP_SYSMEM_SYS_PWR_REG, { 0x1, 0x0, 0x1} }, 38 { EXYNOS5_CMU_RESET_SYSMEM_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 39 { EXYNOS5_DRAM_FREQ_DOWN_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 40 { EXYNOS5_DDRPHY_DLLOFF_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 41 { EXYNOS5_DDRPHY_DLLLOCK_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 42 { EXYNOS5_APLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 43 { EXYNOS5_MPLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 44 { EXYNOS5_VPLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 45 { EXYNOS5_EPLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 46 { EXYNOS5_BPLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 47 { EXYNOS5_CPLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 48 { EXYNOS5_MPLLUSER_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 49 { EXYNOS5_BPLLUSER_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 50 { EXYNOS5_TOP_BUS_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 51 { EXYNOS5_TOP_RETENTION_SYS_PWR_REG, { 0x1, 0x0, 0x1} }, 52 { EXYNOS5_TOP_PWR_SYS_PWR_REG, { 0x3, 0x0, 0x3} }, 53 { EXYNOS5_TOP_BUS_SYSMEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 54 { EXYNOS5_TOP_RETENTION_SYSMEM_SYS_PWR_REG, { 0x1, 0x0, 0x1} }, 55 { EXYNOS5_TOP_PWR_SYSMEM_SYS_PWR_REG, { 0x3, 0x0, 0x3} }, 56 { EXYNOS5_LOGIC_RESET_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 57 { EXYNOS5_OSCCLK_GATE_SYS_PWR_REG, { 0x1, 0x0, 0x1} }, 58 { EXYNOS5_LOGIC_RESET_SYSMEM_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 59 { EXYNOS5_OSCCLK_GATE_SYSMEM_SYS_PWR_REG, { 0x1, 0x0, 0x1} }, 60 { EXYNOS5_USBOTG_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 61 { EXYNOS5_G2D_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 62 { EXYNOS5_USBDRD_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 63 { EXYNOS5_SDMMC_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 64 { EXYNOS5_CSSYS_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 65 { EXYNOS5_SECSS_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 66 { EXYNOS5_ROTATOR_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 67 { EXYNOS5_INTRAM_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 68 { EXYNOS5_INTROM_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 69 { EXYNOS5_JPEG_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 70 { EXYNOS5_JPEG_MEM_OPTION, { 0x10, 0x10, 0x0} }, 71 { EXYNOS5_HSI_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 72 { EXYNOS5_MCUIOP_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 73 { EXYNOS5_SATA_MEM_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 74 { EXYNOS5_PAD_RETENTION_DRAM_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 75 { EXYNOS5_PAD_RETENTION_MAU_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 76 { EXYNOS5_PAD_RETENTION_GPIO_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 77 { EXYNOS5_PAD_RETENTION_UART_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 78 { EXYNOS5_PAD_RETENTION_MMCA_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 79 { EXYNOS5_PAD_RETENTION_MMCB_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 80 { EXYNOS5_PAD_RETENTION_EBIA_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 81 { EXYNOS5_PAD_RETENTION_EBIB_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 82 { EXYNOS5_PAD_RETENTION_SPI_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 83 { EXYNOS5_PAD_RETENTION_GPIO_SYSMEM_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 84 { EXYNOS5_PAD_ISOLATION_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 85 { EXYNOS5_PAD_ISOLATION_SYSMEM_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 86 { EXYNOS5_PAD_ALV_SEL_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 87 { EXYNOS5_XUSBXTI_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 88 { EXYNOS5_XXTI_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 89 { EXYNOS5_EXT_REGULATOR_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 90 { EXYNOS5_GPIO_MODE_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 91 { EXYNOS5_GPIO_MODE_SYSMEM_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 92 { EXYNOS5_GPIO_MODE_MAU_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 93 { EXYNOS5_TOP_ASB_RESET_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 94 { EXYNOS5_TOP_ASB_ISOLATION_SYS_PWR_REG, { 0x1, 0x0, 0x1} }, 95 { EXYNOS5_GSCL_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 96 { EXYNOS5_ISP_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 97 { EXYNOS5_MFC_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 98 { EXYNOS5_G3D_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 99 { EXYNOS5_DISP1_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 100 { EXYNOS5_MAU_SYS_PWR_REG, { 0x7, 0x7, 0x0} }, 101 { EXYNOS5_CMU_CLKSTOP_GSCL_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 102 { EXYNOS5_CMU_CLKSTOP_ISP_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 103 { EXYNOS5_CMU_CLKSTOP_MFC_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 104 { EXYNOS5_CMU_CLKSTOP_G3D_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 105 { EXYNOS5_CMU_CLKSTOP_DISP1_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 106 { EXYNOS5_CMU_CLKSTOP_MAU_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 107 { EXYNOS5_CMU_SYSCLK_GSCL_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 108 { EXYNOS5_CMU_SYSCLK_ISP_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 109 { EXYNOS5_CMU_SYSCLK_MFC_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 110 { EXYNOS5_CMU_SYSCLK_G3D_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 111 { EXYNOS5_CMU_SYSCLK_DISP1_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 112 { EXYNOS5_CMU_SYSCLK_MAU_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 113 { EXYNOS5_CMU_RESET_GSCL_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 114 { EXYNOS5_CMU_RESET_ISP_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 115 { EXYNOS5_CMU_RESET_MFC_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 116 { EXYNOS5_CMU_RESET_G3D_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 117 { EXYNOS5_CMU_RESET_DISP1_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 118 { EXYNOS5_CMU_RESET_MAU_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 119 { PMU_TABLE_END,}, 120 }; 121 122 static unsigned int const exynos5_list_both_cnt_feed[] = { 123 EXYNOS5_ARM_CORE0_OPTION, 124 EXYNOS5_ARM_CORE1_OPTION, 125 EXYNOS5_ARM_COMMON_OPTION, 126 EXYNOS5_GSCL_OPTION, 127 EXYNOS5_ISP_OPTION, 128 EXYNOS5_MFC_OPTION, 129 EXYNOS5_G3D_OPTION, 130 EXYNOS5_DISP1_OPTION, 131 EXYNOS5_MAU_OPTION, 132 EXYNOS5_TOP_PWR_OPTION, 133 EXYNOS5_TOP_PWR_SYSMEM_OPTION, 134 }; 135 136 static unsigned int const exynos5_list_disable_wfi_wfe[] = { 137 EXYNOS5_ARM_CORE1_OPTION, 138 EXYNOS5_FSYS_ARM_OPTION, 139 EXYNOS5_ISP_ARM_OPTION, 140 }; 141 142 static void exynos5250_pmu_init(void) 143 { 144 unsigned int value; 145 /* 146 * When SYS_WDTRESET is set, watchdog timer reset request 147 * is ignored by power management unit. 148 */ 149 value = pmu_raw_readl(EXYNOS5_AUTO_WDTRESET_DISABLE); 150 value &= ~EXYNOS5_SYS_WDTRESET; 151 pmu_raw_writel(value, EXYNOS5_AUTO_WDTRESET_DISABLE); 152 153 value = pmu_raw_readl(EXYNOS5_MASK_WDTRESET_REQUEST); 154 value &= ~EXYNOS5_SYS_WDTRESET; 155 pmu_raw_writel(value, EXYNOS5_MASK_WDTRESET_REQUEST); 156 } 157 158 static void exynos5_powerdown_conf(enum sys_powerdown mode) 159 { 160 unsigned int i; 161 unsigned int tmp; 162 163 /* 164 * Enable both SC_FEEDBACK and SC_COUNTER 165 */ 166 for (i = 0; i < ARRAY_SIZE(exynos5_list_both_cnt_feed); i++) { 167 tmp = pmu_raw_readl(exynos5_list_both_cnt_feed[i]); 168 tmp |= (EXYNOS5_USE_SC_FEEDBACK | 169 EXYNOS5_USE_SC_COUNTER); 170 pmu_raw_writel(tmp, exynos5_list_both_cnt_feed[i]); 171 } 172 173 /* 174 * SKIP_DEACTIVATE_ACEACP_IN_PWDN_BITFIELD Enable 175 */ 176 tmp = pmu_raw_readl(EXYNOS5_ARM_COMMON_OPTION); 177 tmp |= EXYNOS5_SKIP_DEACTIVATE_ACEACP_IN_PWDN; 178 pmu_raw_writel(tmp, EXYNOS5_ARM_COMMON_OPTION); 179 180 /* 181 * Disable WFI/WFE on XXX_OPTION 182 */ 183 for (i = 0; i < ARRAY_SIZE(exynos5_list_disable_wfi_wfe); i++) { 184 tmp = pmu_raw_readl(exynos5_list_disable_wfi_wfe[i]); 185 tmp &= ~(EXYNOS5_OPTION_USE_STANDBYWFE | 186 EXYNOS5_OPTION_USE_STANDBYWFI); 187 pmu_raw_writel(tmp, exynos5_list_disable_wfi_wfe[i]); 188 } 189 } 190 191 const struct exynos_pmu_data exynos5250_pmu_data = { 192 .pmu_config = exynos5250_pmu_config, 193 .pmu_init = exynos5250_pmu_init, 194 .powerdown_conf = exynos5_powerdown_conf, 195 }; 196