| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * RZ/V2H System controller (SYS) driver |
| * |
| * Copyright (C) 2025 Renesas Electronics Corp. |
| */ |
| |
| #include <linux/bitfield.h> |
| #include <linux/bits.h> |
| #include <linux/device.h> |
| #include <linux/init.h> |
| #include <linux/io.h> |
| |
| #include "rz-sysc.h" |
| |
| /* Register Offsets */ |
| #define SYS_LSI_MODE 0x300 |
| /* |
| * BOOTPLLCA[1:0] |
| * [0,0] => 1.1GHZ |
| * [0,1] => 1.5GHZ |
| * [1,0] => 1.6GHZ |
| * [1,1] => 1.7GHZ |
| */ |
| #define SYS_LSI_MODE_STAT_BOOTPLLCA55 GENMASK(12, 11) |
| #define SYS_LSI_MODE_CA55_1_7GHZ 0x3 |
| |
| #define SYS_LSI_PRR 0x308 |
| #define SYS_LSI_PRR_GPU_DIS BIT(0) |
| #define SYS_LSI_PRR_ISP_DIS BIT(4) |
| |
| #define SYS_LSI_OTPTSU0TRMVAL0 0x320 |
| #define SYS_LSI_OTPTSU0TRMVAL1 0x324 |
| #define SYS_LSI_OTPTSU1TRMVAL0 0x330 |
| #define SYS_LSI_OTPTSU1TRMVAL1 0x334 |
| #define SYS_GBETH0_CFG 0xf00 |
| #define SYS_GBETH1_CFG 0xf04 |
| #define SYS_PCIE_INTX_CH0 0x1000 |
| #define SYS_PCIE_MSI1_CH0 0x1004 |
| #define SYS_PCIE_MSI2_CH0 0x1008 |
| #define SYS_PCIE_MSI3_CH0 0x100c |
| #define SYS_PCIE_MSI4_CH0 0x1010 |
| #define SYS_PCIE_MSI5_CH0 0x1014 |
| #define SYS_PCIE_PME_CH0 0x1018 |
| #define SYS_PCIE_ACK_CH0 0x101c |
| #define SYS_PCIE_MISC_CH0 0x1020 |
| #define SYS_PCIE_MODE_CH0 0x1024 |
| #define SYS_PCIE_INTX_CH1 0x1030 |
| #define SYS_PCIE_MSI1_CH1 0x1034 |
| #define SYS_PCIE_MSI2_CH1 0x1038 |
| #define SYS_PCIE_MSI3_CH1 0x103c |
| #define SYS_PCIE_MSI4_CH1 0x1040 |
| #define SYS_PCIE_MSI5_CH1 0x1044 |
| #define SYS_PCIE_PME_CH1 0x1048 |
| #define SYS_PCIE_ACK_CH1 0x104c |
| #define SYS_PCIE_MISC_CH1 0x1050 |
| #define SYS_PCIE_MODE_CH1 0x1054 |
| #define SYS_PCIE_MODE 0x1060 |
| #define SYS_ADC_CFG 0x1600 |
| |
| static void rzv2h_sys_print_id(struct device *dev, |
| void __iomem *sysc_base, |
| struct soc_device_attribute *soc_dev_attr) |
| { |
| bool gpu_enabled, isp_enabled; |
| u32 prr_val, mode_val; |
| |
| prr_val = readl(sysc_base + SYS_LSI_PRR); |
| mode_val = readl(sysc_base + SYS_LSI_MODE); |
| |
| /* Check GPU and ISP configuration */ |
| gpu_enabled = !(prr_val & SYS_LSI_PRR_GPU_DIS); |
| isp_enabled = !(prr_val & SYS_LSI_PRR_ISP_DIS); |
| |
| dev_info(dev, "Detected Renesas %s %s Rev %s%s%s\n", |
| soc_dev_attr->family, soc_dev_attr->soc_id, soc_dev_attr->revision, |
| gpu_enabled ? " with GE3D (Mali-G31)" : "", |
| isp_enabled ? " with ISP (Mali-C55)" : ""); |
| |
| /* Check CA55 PLL configuration */ |
| if (FIELD_GET(SYS_LSI_MODE_STAT_BOOTPLLCA55, mode_val) != SYS_LSI_MODE_CA55_1_7GHZ) |
| dev_warn(dev, "CA55 PLL is not set to 1.7GHz\n"); |
| } |
| |
| static const struct rz_sysc_soc_id_init_data rzv2h_sys_soc_id_init_data __initconst = { |
| .family = "RZ/V2H", |
| .id = 0x847a447, |
| .devid_offset = 0x304, |
| .revision_mask = GENMASK(31, 28), |
| .specific_id_mask = GENMASK(27, 0), |
| .print_id = rzv2h_sys_print_id, |
| }; |
| |
| static bool rzv2h_regmap_readable_reg(struct device *dev, unsigned int reg) |
| { |
| switch (reg) { |
| case SYS_LSI_OTPTSU0TRMVAL0: |
| case SYS_LSI_OTPTSU0TRMVAL1: |
| case SYS_LSI_OTPTSU1TRMVAL0: |
| case SYS_LSI_OTPTSU1TRMVAL1: |
| case SYS_GBETH0_CFG: |
| case SYS_GBETH1_CFG: |
| case SYS_PCIE_INTX_CH0: |
| case SYS_PCIE_MSI1_CH0: |
| case SYS_PCIE_MSI2_CH0: |
| case SYS_PCIE_MSI3_CH0: |
| case SYS_PCIE_MSI4_CH0: |
| case SYS_PCIE_MSI5_CH0: |
| case SYS_PCIE_PME_CH0: |
| case SYS_PCIE_ACK_CH0: |
| case SYS_PCIE_MISC_CH0: |
| case SYS_PCIE_MODE_CH0: |
| case SYS_PCIE_INTX_CH1: |
| case SYS_PCIE_MSI1_CH1: |
| case SYS_PCIE_MSI2_CH1: |
| case SYS_PCIE_MSI3_CH1: |
| case SYS_PCIE_MSI4_CH1: |
| case SYS_PCIE_MSI5_CH1: |
| case SYS_PCIE_PME_CH1: |
| case SYS_PCIE_ACK_CH1: |
| case SYS_PCIE_MISC_CH1: |
| case SYS_PCIE_MODE_CH1: |
| case SYS_PCIE_MODE: |
| case SYS_ADC_CFG: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static bool rzv2h_regmap_writeable_reg(struct device *dev, unsigned int reg) |
| { |
| switch (reg) { |
| case SYS_GBETH0_CFG: |
| case SYS_GBETH1_CFG: |
| case SYS_PCIE_INTX_CH0: |
| case SYS_PCIE_MSI1_CH0: |
| case SYS_PCIE_MSI2_CH0: |
| case SYS_PCIE_MSI3_CH0: |
| case SYS_PCIE_MSI4_CH0: |
| case SYS_PCIE_MSI5_CH0: |
| case SYS_PCIE_PME_CH0: |
| case SYS_PCIE_ACK_CH0: |
| case SYS_PCIE_MISC_CH0: |
| case SYS_PCIE_MODE_CH0: |
| case SYS_PCIE_INTX_CH1: |
| case SYS_PCIE_MSI1_CH1: |
| case SYS_PCIE_MSI2_CH1: |
| case SYS_PCIE_MSI3_CH1: |
| case SYS_PCIE_MSI4_CH1: |
| case SYS_PCIE_MSI5_CH1: |
| case SYS_PCIE_PME_CH1: |
| case SYS_PCIE_ACK_CH1: |
| case SYS_PCIE_MISC_CH1: |
| case SYS_PCIE_MODE_CH1: |
| case SYS_PCIE_MODE: |
| case SYS_ADC_CFG: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| const struct rz_sysc_init_data rzv2h_sys_init_data = { |
| .soc_id_init_data = &rzv2h_sys_soc_id_init_data, |
| .readable_reg = rzv2h_regmap_readable_reg, |
| .writeable_reg = rzv2h_regmap_writeable_reg, |
| .max_register = 0x170c, |
| }; |