1 // SPDX-License-Identifier: GPL-2.0 2 // 3 // Copyright (c) 2011-2015 Samsung Electronics Co., Ltd. 4 // http://www.samsung.com/ 5 // 6 // Exynos3250 - CPU PMU (Power Management Unit) support 7 8 #include <linux/soc/samsung/exynos-regs-pmu.h> 9 #include <linux/soc/samsung/exynos-pmu.h> 10 11 #include "exynos-pmu.h" 12 13 static const struct exynos_pmu_conf exynos3250_pmu_config[] = { 14 /* { .offset = offset, .val = { AFTR, W-AFTR, SLEEP } */ 15 { EXYNOS3_ARM_CORE0_SYS_PWR_REG, { 0x0, 0x0, 0x2} }, 16 { EXYNOS3_DIS_IRQ_ARM_CORE0_LOCAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 17 { EXYNOS3_DIS_IRQ_ARM_CORE0_CENTRAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 18 { EXYNOS3_ARM_CORE1_SYS_PWR_REG, { 0x0, 0x0, 0x2} }, 19 { EXYNOS3_DIS_IRQ_ARM_CORE1_LOCAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 20 { EXYNOS3_DIS_IRQ_ARM_CORE1_CENTRAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 21 { EXYNOS3_ISP_ARM_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 22 { EXYNOS3_DIS_IRQ_ISP_ARM_LOCAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 23 { EXYNOS3_DIS_IRQ_ISP_ARM_CENTRAL_SYS_PWR_REG, { 0x0, 0x0, 0x0} }, 24 { EXYNOS3_ARM_COMMON_SYS_PWR_REG, { 0x0, 0x0, 0x2} }, 25 { EXYNOS3_ARM_L2_SYS_PWR_REG, { 0x0, 0x0, 0x3} }, 26 { EXYNOS3_CMU_ACLKSTOP_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 27 { EXYNOS3_CMU_SCLKSTOP_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 28 { EXYNOS3_CMU_RESET_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 29 { EXYNOS3_DRAM_FREQ_DOWN_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 30 { EXYNOS3_DDRPHY_DLLOFF_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 31 { EXYNOS3_LPDDR_PHY_DLL_LOCK_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 32 { EXYNOS3_CMU_ACLKSTOP_COREBLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 33 { EXYNOS3_CMU_SCLKSTOP_COREBLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 34 { EXYNOS3_CMU_RESET_COREBLK_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 35 { EXYNOS3_APLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 36 { EXYNOS3_MPLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 37 { EXYNOS3_BPLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 38 { EXYNOS3_VPLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 39 { EXYNOS3_EPLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 40 { EXYNOS3_UPLL_SYSCLK_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 41 { EXYNOS3_EPLLUSER_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 42 { EXYNOS3_MPLLUSER_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 43 { EXYNOS3_BPLLUSER_SYSCLK_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 44 { EXYNOS3_CMU_CLKSTOP_CAM_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 45 { EXYNOS3_CMU_CLKSTOP_MFC_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 46 { EXYNOS3_CMU_CLKSTOP_G3D_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 47 { EXYNOS3_CMU_CLKSTOP_LCD0_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 48 { EXYNOS3_CMU_CLKSTOP_ISP_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 49 { EXYNOS3_CMU_CLKSTOP_MAUDIO_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 50 { EXYNOS3_CMU_RESET_CAM_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 51 { EXYNOS3_CMU_RESET_MFC_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 52 { EXYNOS3_CMU_RESET_G3D_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 53 { EXYNOS3_CMU_RESET_LCD0_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 54 { EXYNOS3_CMU_RESET_ISP_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 55 { EXYNOS3_CMU_RESET_MAUDIO_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 56 { EXYNOS3_TOP_BUS_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 57 { EXYNOS3_TOP_RETENTION_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 58 { EXYNOS3_TOP_PWR_SYS_PWR_REG, { 0x3, 0x3, 0x3} }, 59 { EXYNOS3_TOP_BUS_COREBLK_SYS_PWR_REG, { 0x3, 0x0, 0x0} }, 60 { EXYNOS3_TOP_RETENTION_COREBLK_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 61 { EXYNOS3_TOP_PWR_COREBLK_SYS_PWR_REG, { 0x3, 0x3, 0x3} }, 62 { EXYNOS3_LOGIC_RESET_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 63 { EXYNOS3_OSCCLK_GATE_SYS_PWR_REG, { 0x1, 0x1, 0x1} }, 64 { EXYNOS3_LOGIC_RESET_COREBLK_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 65 { EXYNOS3_OSCCLK_GATE_COREBLK_SYS_PWR_REG, { 0x1, 0x0, 0x1} }, 66 { EXYNOS3_PAD_RETENTION_DRAM_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 67 { EXYNOS3_PAD_RETENTION_MAUDIO_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 68 { EXYNOS3_PAD_RETENTION_GPIO_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 69 { EXYNOS3_PAD_RETENTION_UART_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 70 { EXYNOS3_PAD_RETENTION_MMC0_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 71 { EXYNOS3_PAD_RETENTION_MMC1_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 72 { EXYNOS3_PAD_RETENTION_MMC2_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 73 { EXYNOS3_PAD_RETENTION_SPI_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 74 { EXYNOS3_PAD_RETENTION_EBIA_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 75 { EXYNOS3_PAD_RETENTION_EBIB_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 76 { EXYNOS3_PAD_RETENTION_JTAG_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 77 { EXYNOS3_PAD_ISOLATION_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 78 { EXYNOS3_PAD_ALV_SEL_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 79 { EXYNOS3_XUSBXTI_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 80 { EXYNOS3_XXTI_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 81 { EXYNOS3_EXT_REGULATOR_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 82 { EXYNOS3_EXT_REGULATOR_COREBLK_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 83 { EXYNOS3_GPIO_MODE_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 84 { EXYNOS3_GPIO_MODE_MAUDIO_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 85 { EXYNOS3_TOP_ASB_RESET_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 86 { EXYNOS3_TOP_ASB_ISOLATION_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 87 { EXYNOS3_TOP_ASB_RESET_COREBLK_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 88 { EXYNOS3_TOP_ASB_ISOLATION_COREBLK_SYS_PWR_REG, { 0x1, 0x1, 0x0} }, 89 { EXYNOS3_CAM_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 90 { EXYNOS3_MFC_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 91 { EXYNOS3_G3D_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 92 { EXYNOS3_LCD0_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 93 { EXYNOS3_ISP_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 94 { EXYNOS3_MAUDIO_SYS_PWR_REG, { 0x7, 0x0, 0x0} }, 95 { EXYNOS3_CMU_SYSCLK_ISP_SYS_PWR_REG, { 0x1, 0x0, 0x0} }, 96 { PMU_TABLE_END,}, 97 }; 98 99 static unsigned int const exynos3250_list_feed[] = { 100 EXYNOS3_ARM_CORE_OPTION(0), 101 EXYNOS3_ARM_CORE_OPTION(1), 102 EXYNOS3_ARM_CORE_OPTION(2), 103 EXYNOS3_ARM_CORE_OPTION(3), 104 EXYNOS3_ARM_COMMON_OPTION, 105 EXYNOS3_TOP_PWR_OPTION, 106 EXYNOS3_CORE_TOP_PWR_OPTION, 107 S5P_CAM_OPTION, 108 S5P_MFC_OPTION, 109 S5P_G3D_OPTION, 110 S5P_LCD0_OPTION, 111 S5P_ISP_OPTION, 112 }; 113 114 static void exynos3250_powerdown_conf_extra(enum sys_powerdown mode) 115 { 116 unsigned int i; 117 unsigned int tmp; 118 119 /* Enable only SC_FEEDBACK */ 120 for (i = 0; i < ARRAY_SIZE(exynos3250_list_feed); i++) { 121 tmp = pmu_raw_readl(exynos3250_list_feed[i]); 122 tmp &= ~(EXYNOS3_OPTION_USE_SC_COUNTER); 123 tmp |= EXYNOS3_OPTION_USE_SC_FEEDBACK; 124 pmu_raw_writel(tmp, exynos3250_list_feed[i]); 125 } 126 127 if (mode != SYS_SLEEP) 128 return; 129 130 pmu_raw_writel(XUSBXTI_DURATION, EXYNOS3_XUSBXTI_DURATION); 131 pmu_raw_writel(XXTI_DURATION, EXYNOS3_XXTI_DURATION); 132 pmu_raw_writel(EXT_REGULATOR_DURATION, EXYNOS3_EXT_REGULATOR_DURATION); 133 pmu_raw_writel(EXT_REGULATOR_COREBLK_DURATION, 134 EXYNOS3_EXT_REGULATOR_COREBLK_DURATION); 135 } 136 137 static void exynos3250_pmu_init(void) 138 { 139 unsigned int value; 140 141 /* 142 * To prevent from issuing new bus request form L2 memory system 143 * If core status is power down, should be set '1' to L2 power down 144 */ 145 value = pmu_raw_readl(EXYNOS3_ARM_COMMON_OPTION); 146 value |= EXYNOS3_OPTION_SKIP_DEACTIVATE_ACEACP_IN_PWDN; 147 pmu_raw_writel(value, EXYNOS3_ARM_COMMON_OPTION); 148 149 /* Enable USE_STANDBY_WFI for all CORE */ 150 pmu_raw_writel(S5P_USE_STANDBY_WFI_ALL, S5P_CENTRAL_SEQ_OPTION); 151 152 /* 153 * Set PSHOLD port for output high 154 */ 155 value = pmu_raw_readl(S5P_PS_HOLD_CONTROL); 156 value |= S5P_PS_HOLD_OUTPUT_HIGH; 157 pmu_raw_writel(value, S5P_PS_HOLD_CONTROL); 158 159 /* 160 * Enable signal for PSHOLD port 161 */ 162 value = pmu_raw_readl(S5P_PS_HOLD_CONTROL); 163 value |= S5P_PS_HOLD_EN; 164 pmu_raw_writel(value, S5P_PS_HOLD_CONTROL); 165 } 166 167 const struct exynos_pmu_data exynos3250_pmu_data = { 168 .pmu_config = exynos3250_pmu_config, 169 .pmu_init = exynos3250_pmu_init, 170 .powerdown_conf_extra = exynos3250_powerdown_conf_extra, 171 }; 172