Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 1 | /* |
Benjamin Gaignard | 53ee7d3 | 2020-02-24 13:57:40 +0100 | [diff] [blame] | 2 | * Copyright (c) 2017-2021, STMicroelectronics - All Rights Reserved |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
Yann Gautier | e6f1032 | 2021-09-27 14:31:40 +0200 | [diff] [blame^] | 7 | #include <assert.h> |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 8 | #include <errno.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 9 | |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 10 | #include <common/debug.h> |
| 11 | #include <drivers/delay_timer.h> |
Yann Gautier | e6f1032 | 2021-09-27 14:31:40 +0200 | [diff] [blame^] | 12 | #include <drivers/st/regulator.h> |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 13 | #include <drivers/st/stm32_i2c.h> |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 14 | #include <drivers/st/stm32mp_pmic.h> |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 15 | #include <drivers/st/stpmic1.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 16 | #include <lib/mmio.h> |
| 17 | #include <lib/utils_def.h> |
Nicolas Le Bayon | f5188ee | 2019-09-19 11:24:50 +0200 | [diff] [blame] | 18 | #include <libfdt.h> |
| 19 | |
| 20 | #include <platform_def.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 21 | |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 22 | #define PMIC_NODE_NOT_FOUND 1 |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 23 | #define STPMIC1_LDO12356_OUTPUT_MASK (uint8_t)(GENMASK(6, 2)) |
| 24 | #define STPMIC1_LDO12356_OUTPUT_SHIFT 2 |
| 25 | #define STPMIC1_LDO3_MODE (uint8_t)(BIT(7)) |
| 26 | #define STPMIC1_LDO3_DDR_SEL 31U |
| 27 | #define STPMIC1_LDO3_1800000 (9U << STPMIC1_LDO12356_OUTPUT_SHIFT) |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 28 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 29 | #define STPMIC1_BUCK_OUTPUT_SHIFT 2 |
| 30 | #define STPMIC1_BUCK3_1V8 (39U << STPMIC1_BUCK_OUTPUT_SHIFT) |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 31 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 32 | #define STPMIC1_DEFAULT_START_UP_DELAY_MS 1 |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 33 | |
| 34 | static struct i2c_handle_s i2c_handle; |
| 35 | static uint32_t pmic_i2c_addr; |
| 36 | |
Yann Gautier | e6f1032 | 2021-09-27 14:31:40 +0200 | [diff] [blame^] | 37 | static int register_pmic(void); |
| 38 | |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 39 | static int dt_get_pmic_node(void *fdt) |
| 40 | { |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 41 | static int node = -FDT_ERR_BADOFFSET; |
| 42 | |
| 43 | if (node == -FDT_ERR_BADOFFSET) { |
| 44 | node = fdt_node_offset_by_compatible(fdt, -1, "st,stpmic1"); |
| 45 | } |
| 46 | |
| 47 | return node; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 48 | } |
| 49 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 50 | int dt_pmic_status(void) |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 51 | { |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 52 | static int status = -FDT_ERR_BADVALUE; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 53 | int node; |
| 54 | void *fdt; |
| 55 | |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 56 | if (status != -FDT_ERR_BADVALUE) { |
| 57 | return status; |
| 58 | } |
| 59 | |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 60 | if (fdt_get_address(&fdt) == 0) { |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 61 | return -ENOENT; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | node = dt_get_pmic_node(fdt); |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 65 | if (node <= 0) { |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 66 | status = -FDT_ERR_NOTFOUND; |
| 67 | |
| 68 | return status; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 69 | } |
| 70 | |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 71 | status = (int)fdt_get_status(node); |
| 72 | |
| 73 | return status; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 74 | } |
| 75 | |
Etienne Carriere | 67b106a | 2019-12-02 10:10:08 +0100 | [diff] [blame] | 76 | static bool dt_pmic_is_secure(void) |
| 77 | { |
| 78 | int status = dt_pmic_status(); |
| 79 | |
| 80 | return (status >= 0) && |
| 81 | (status == DT_SECURE) && |
| 82 | (i2c_handle.dt_status == DT_SECURE); |
| 83 | } |
| 84 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 85 | /* |
| 86 | * Get PMIC and its I2C bus configuration from the device tree. |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 87 | * Return 0 on success, negative on error, 1 if no PMIC node is defined. |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 88 | */ |
| 89 | static int dt_pmic_i2c_config(struct dt_node_info *i2c_info, |
| 90 | struct stm32_i2c_init_s *init) |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 91 | { |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 92 | static int i2c_node = -FDT_ERR_NOTFOUND; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 93 | void *fdt; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 94 | |
| 95 | if (fdt_get_address(&fdt) == 0) { |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 96 | return -FDT_ERR_NOTFOUND; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 97 | } |
| 98 | |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 99 | if (i2c_node == -FDT_ERR_NOTFOUND) { |
| 100 | int pmic_node; |
| 101 | const fdt32_t *cuint; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 102 | |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 103 | pmic_node = dt_get_pmic_node(fdt); |
| 104 | if (pmic_node < 0) { |
| 105 | return PMIC_NODE_NOT_FOUND; |
| 106 | } |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 107 | |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 108 | cuint = fdt_getprop(fdt, pmic_node, "reg", NULL); |
| 109 | if (cuint == NULL) { |
| 110 | return -FDT_ERR_NOTFOUND; |
| 111 | } |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 112 | |
Nicolas Le Bayon | 342865a | 2019-11-15 15:56:06 +0100 | [diff] [blame] | 113 | pmic_i2c_addr = fdt32_to_cpu(*cuint) << 1; |
| 114 | if (pmic_i2c_addr > UINT16_MAX) { |
| 115 | return -FDT_ERR_BADVALUE; |
| 116 | } |
| 117 | |
| 118 | i2c_node = fdt_parent_offset(fdt, pmic_node); |
| 119 | if (i2c_node < 0) { |
| 120 | return -FDT_ERR_NOTFOUND; |
| 121 | } |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | dt_fill_device_info(i2c_info, i2c_node); |
| 125 | if (i2c_info->base == 0U) { |
| 126 | return -FDT_ERR_NOTFOUND; |
| 127 | } |
| 128 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 129 | return stm32_i2c_get_setup_from_fdt(fdt, i2c_node, init); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 130 | } |
| 131 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 132 | bool initialize_pmic_i2c(void) |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 133 | { |
| 134 | int ret; |
| 135 | struct dt_node_info i2c_info; |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 136 | struct i2c_handle_s *i2c = &i2c_handle; |
| 137 | struct stm32_i2c_init_s i2c_init; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 138 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 139 | ret = dt_pmic_i2c_config(&i2c_info, &i2c_init); |
| 140 | if (ret < 0) { |
| 141 | ERROR("I2C configuration failed %d\n", ret); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 142 | panic(); |
| 143 | } |
| 144 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 145 | if (ret != 0) { |
| 146 | return false; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | /* Initialize PMIC I2C */ |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 150 | i2c->i2c_base_addr = i2c_info.base; |
| 151 | i2c->dt_status = i2c_info.status; |
| 152 | i2c->clock = i2c_info.clock; |
Benjamin Gaignard | 53ee7d3 | 2020-02-24 13:57:40 +0100 | [diff] [blame] | 153 | i2c->i2c_state = I2C_STATE_RESET; |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 154 | i2c_init.own_address1 = pmic_i2c_addr; |
| 155 | i2c_init.addressing_mode = I2C_ADDRESSINGMODE_7BIT; |
| 156 | i2c_init.dual_address_mode = I2C_DUALADDRESS_DISABLE; |
| 157 | i2c_init.own_address2 = 0; |
| 158 | i2c_init.own_address2_masks = I2C_OAR2_OA2NOMASK; |
| 159 | i2c_init.general_call_mode = I2C_GENERALCALL_DISABLE; |
| 160 | i2c_init.no_stretch_mode = I2C_NOSTRETCH_DISABLE; |
| 161 | i2c_init.analog_filter = 1; |
| 162 | i2c_init.digital_filter_coef = 0; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 163 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 164 | ret = stm32_i2c_init(i2c, &i2c_init); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 165 | if (ret != 0) { |
| 166 | ERROR("Cannot initialize I2C %x (%d)\n", |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 167 | i2c->i2c_base_addr, ret); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 168 | panic(); |
| 169 | } |
| 170 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 171 | if (!stm32_i2c_is_device_ready(i2c, pmic_i2c_addr, 1, |
| 172 | I2C_TIMEOUT_BUSY_MS)) { |
| 173 | ERROR("I2C device not ready\n"); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 174 | panic(); |
| 175 | } |
| 176 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 177 | stpmic1_bind_i2c(i2c, (uint16_t)pmic_i2c_addr); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 178 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 179 | return true; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 180 | } |
| 181 | |
Etienne Carriere | 67b106a | 2019-12-02 10:10:08 +0100 | [diff] [blame] | 182 | static void register_pmic_shared_peripherals(void) |
| 183 | { |
| 184 | uintptr_t i2c_base = i2c_handle.i2c_base_addr; |
| 185 | |
| 186 | if (dt_pmic_is_secure()) { |
| 187 | stm32mp_register_secure_periph_iomem(i2c_base); |
| 188 | } else { |
| 189 | if (i2c_base != 0U) { |
| 190 | stm32mp_register_non_secure_periph_iomem(i2c_base); |
| 191 | } |
| 192 | } |
| 193 | } |
| 194 | |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 195 | void initialize_pmic(void) |
| 196 | { |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 197 | if (!initialize_pmic_i2c()) { |
| 198 | VERBOSE("No PMIC\n"); |
| 199 | return; |
| 200 | } |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 201 | |
Etienne Carriere | 67b106a | 2019-12-02 10:10:08 +0100 | [diff] [blame] | 202 | register_pmic_shared_peripherals(); |
| 203 | |
Yann Gautier | e6f1032 | 2021-09-27 14:31:40 +0200 | [diff] [blame^] | 204 | if (register_pmic() < 0) { |
Nicolas Le Bayon | 0b10b65 | 2019-11-18 13:13:36 +0100 | [diff] [blame] | 205 | panic(); |
Yann Gautier | e6f1032 | 2021-09-27 14:31:40 +0200 | [diff] [blame^] | 206 | } |
| 207 | |
| 208 | if (stpmic1_powerctrl_on() < 0) { |
| 209 | panic(); |
| 210 | } |
| 211 | |
Nicolas Le Bayon | 0b10b65 | 2019-11-18 13:13:36 +0100 | [diff] [blame] | 212 | } |
| 213 | |
| 214 | #if DEBUG |
| 215 | void print_pmic_info_and_debug(void) |
| 216 | { |
| 217 | unsigned long pmic_version; |
| 218 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 219 | if (stpmic1_get_version(&pmic_version) != 0) { |
| 220 | ERROR("Failed to access PMIC\n"); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 221 | panic(); |
| 222 | } |
| 223 | |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 224 | INFO("PMIC version = 0x%02lx\n", pmic_version); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 225 | } |
Nicolas Le Bayon | 0b10b65 | 2019-11-18 13:13:36 +0100 | [diff] [blame] | 226 | #endif |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 227 | |
| 228 | int pmic_ddr_power_init(enum ddr_type ddr_type) |
| 229 | { |
| 230 | bool buck3_at_1v8 = false; |
| 231 | uint8_t read_val; |
| 232 | int status; |
| 233 | |
| 234 | switch (ddr_type) { |
| 235 | case STM32MP_DDR3: |
| 236 | /* Set LDO3 to sync mode */ |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 237 | status = stpmic1_register_read(LDO3_CONTROL_REG, &read_val); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 238 | if (status != 0) { |
| 239 | return status; |
| 240 | } |
| 241 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 242 | read_val &= ~STPMIC1_LDO3_MODE; |
| 243 | read_val &= ~STPMIC1_LDO12356_OUTPUT_MASK; |
| 244 | read_val |= STPMIC1_LDO3_DDR_SEL << |
| 245 | STPMIC1_LDO12356_OUTPUT_SHIFT; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 246 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 247 | status = stpmic1_register_write(LDO3_CONTROL_REG, read_val); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 248 | if (status != 0) { |
| 249 | return status; |
| 250 | } |
| 251 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 252 | status = stpmic1_regulator_voltage_set("buck2", 1350); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 253 | if (status != 0) { |
| 254 | return status; |
| 255 | } |
| 256 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 257 | status = stpmic1_regulator_enable("buck2"); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 258 | if (status != 0) { |
| 259 | return status; |
| 260 | } |
| 261 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 262 | mdelay(STPMIC1_DEFAULT_START_UP_DELAY_MS); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 263 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 264 | status = stpmic1_regulator_enable("vref_ddr"); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 265 | if (status != 0) { |
| 266 | return status; |
| 267 | } |
| 268 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 269 | mdelay(STPMIC1_DEFAULT_START_UP_DELAY_MS); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 270 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 271 | status = stpmic1_regulator_enable("ldo3"); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 272 | if (status != 0) { |
| 273 | return status; |
| 274 | } |
| 275 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 276 | mdelay(STPMIC1_DEFAULT_START_UP_DELAY_MS); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 277 | break; |
| 278 | |
| 279 | case STM32MP_LPDDR2: |
Yann Gautier | 917a00c | 2019-04-16 16:20:58 +0200 | [diff] [blame] | 280 | case STM32MP_LPDDR3: |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 281 | /* |
| 282 | * Set LDO3 to 1.8V |
| 283 | * Set LDO3 to bypass mode if BUCK3 = 1.8V |
| 284 | * Set LDO3 to normal mode if BUCK3 != 1.8V |
| 285 | */ |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 286 | status = stpmic1_register_read(BUCK3_CONTROL_REG, &read_val); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 287 | if (status != 0) { |
| 288 | return status; |
| 289 | } |
| 290 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 291 | if ((read_val & STPMIC1_BUCK3_1V8) == STPMIC1_BUCK3_1V8) { |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 292 | buck3_at_1v8 = true; |
| 293 | } |
| 294 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 295 | status = stpmic1_register_read(LDO3_CONTROL_REG, &read_val); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 296 | if (status != 0) { |
| 297 | return status; |
| 298 | } |
| 299 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 300 | read_val &= ~STPMIC1_LDO3_MODE; |
| 301 | read_val &= ~STPMIC1_LDO12356_OUTPUT_MASK; |
| 302 | read_val |= STPMIC1_LDO3_1800000; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 303 | if (buck3_at_1v8) { |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 304 | read_val |= STPMIC1_LDO3_MODE; |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 305 | } |
| 306 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 307 | status = stpmic1_register_write(LDO3_CONTROL_REG, read_val); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 308 | if (status != 0) { |
| 309 | return status; |
| 310 | } |
| 311 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 312 | status = stpmic1_regulator_voltage_set("buck2", 1200); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 313 | if (status != 0) { |
| 314 | return status; |
| 315 | } |
| 316 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 317 | status = stpmic1_regulator_enable("ldo3"); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 318 | if (status != 0) { |
| 319 | return status; |
| 320 | } |
| 321 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 322 | mdelay(STPMIC1_DEFAULT_START_UP_DELAY_MS); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 323 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 324 | status = stpmic1_regulator_enable("buck2"); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 325 | if (status != 0) { |
| 326 | return status; |
| 327 | } |
| 328 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 329 | mdelay(STPMIC1_DEFAULT_START_UP_DELAY_MS); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 330 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 331 | status = stpmic1_regulator_enable("vref_ddr"); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 332 | if (status != 0) { |
| 333 | return status; |
| 334 | } |
| 335 | |
Yann Gautier | a45433b | 2019-01-16 18:31:00 +0100 | [diff] [blame] | 336 | mdelay(STPMIC1_DEFAULT_START_UP_DELAY_MS); |
Yann Gautier | bb836ee | 2018-07-16 17:55:07 +0200 | [diff] [blame] | 337 | break; |
| 338 | |
| 339 | default: |
| 340 | break; |
| 341 | }; |
| 342 | |
| 343 | return 0; |
| 344 | } |
Yann Gautier | e6f1032 | 2021-09-27 14:31:40 +0200 | [diff] [blame^] | 345 | |
| 346 | enum { |
| 347 | STPMIC1_BUCK1 = 0, |
| 348 | STPMIC1_BUCK2, |
| 349 | STPMIC1_BUCK3, |
| 350 | STPMIC1_BUCK4, |
| 351 | STPMIC1_LDO1, |
| 352 | STPMIC1_LDO2, |
| 353 | STPMIC1_LDO3, |
| 354 | STPMIC1_LDO4, |
| 355 | STPMIC1_LDO5, |
| 356 | STPMIC1_LDO6, |
| 357 | STPMIC1_VREF_DDR, |
| 358 | STPMIC1_BOOST, |
| 359 | STPMIC1_VBUS_OTG, |
| 360 | STPMIC1_SW_OUT, |
| 361 | }; |
| 362 | |
| 363 | static int pmic_set_state(const struct regul_description *desc, bool enable) |
| 364 | { |
| 365 | VERBOSE("%s: set state to %u\n", desc->node_name, enable); |
| 366 | |
| 367 | if (enable == STATE_ENABLE) { |
| 368 | return stpmic1_regulator_enable(desc->node_name); |
| 369 | } else { |
| 370 | return stpmic1_regulator_disable(desc->node_name); |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | static int pmic_get_state(const struct regul_description *desc) |
| 375 | { |
| 376 | VERBOSE("%s: get state\n", desc->node_name); |
| 377 | |
| 378 | return stpmic1_is_regulator_enabled(desc->node_name); |
| 379 | } |
| 380 | |
| 381 | static int pmic_get_voltage(const struct regul_description *desc) |
| 382 | { |
| 383 | VERBOSE("%s: get volt\n", desc->node_name); |
| 384 | |
| 385 | return stpmic1_regulator_voltage_get(desc->node_name); |
| 386 | } |
| 387 | |
| 388 | static int pmic_set_voltage(const struct regul_description *desc, uint16_t mv) |
| 389 | { |
| 390 | VERBOSE("%s: get volt\n", desc->node_name); |
| 391 | |
| 392 | return stpmic1_regulator_voltage_set(desc->node_name, mv); |
| 393 | } |
| 394 | |
| 395 | static int pmic_list_voltages(const struct regul_description *desc, |
| 396 | const uint16_t **levels, size_t *count) |
| 397 | { |
| 398 | VERBOSE("%s: list volt\n", desc->node_name); |
| 399 | |
| 400 | return stpmic1_regulator_levels_mv(desc->node_name, levels, count); |
| 401 | } |
| 402 | |
| 403 | static int pmic_set_flag(const struct regul_description *desc, uint16_t flag) |
| 404 | { |
| 405 | VERBOSE("%s: set_flag 0x%x\n", desc->node_name, flag); |
| 406 | |
| 407 | switch (flag) { |
| 408 | case REGUL_OCP: |
| 409 | return stpmic1_regulator_icc_set(desc->node_name); |
| 410 | |
| 411 | case REGUL_ACTIVE_DISCHARGE: |
| 412 | return stpmic1_active_discharge_mode_set(desc->node_name); |
| 413 | |
| 414 | case REGUL_PULL_DOWN: |
| 415 | return stpmic1_regulator_pull_down_set(desc->node_name); |
| 416 | |
| 417 | case REGUL_MASK_RESET: |
| 418 | return stpmic1_regulator_mask_reset_set(desc->node_name); |
| 419 | |
| 420 | case REGUL_SINK_SOURCE: |
| 421 | return stpmic1_regulator_sink_mode_set(desc->node_name); |
| 422 | |
| 423 | case REGUL_ENABLE_BYPASS: |
| 424 | return stpmic1_regulator_bypass_mode_set(desc->node_name); |
| 425 | |
| 426 | default: |
| 427 | return -EINVAL; |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | struct regul_ops pmic_ops = { |
| 432 | .set_state = pmic_set_state, |
| 433 | .get_state = pmic_get_state, |
| 434 | .set_voltage = pmic_set_voltage, |
| 435 | .get_voltage = pmic_get_voltage, |
| 436 | .list_voltages = pmic_list_voltages, |
| 437 | .set_flag = pmic_set_flag, |
| 438 | }; |
| 439 | |
| 440 | #define DEFINE_REGU(name) { \ |
| 441 | .node_name = name, \ |
| 442 | .ops = &pmic_ops, \ |
| 443 | .driver_data = NULL, \ |
| 444 | .enable_ramp_delay = 1000, \ |
| 445 | } |
| 446 | |
| 447 | static const struct regul_description pmic_regs[] = { |
| 448 | [STPMIC1_BUCK1] = DEFINE_REGU("buck1"), |
| 449 | [STPMIC1_BUCK2] = DEFINE_REGU("buck2"), |
| 450 | [STPMIC1_BUCK3] = DEFINE_REGU("buck3"), |
| 451 | [STPMIC1_BUCK4] = DEFINE_REGU("buck4"), |
| 452 | [STPMIC1_LDO1] = DEFINE_REGU("ldo1"), |
| 453 | [STPMIC1_LDO2] = DEFINE_REGU("ldo2"), |
| 454 | [STPMIC1_LDO3] = DEFINE_REGU("ldo3"), |
| 455 | [STPMIC1_LDO4] = DEFINE_REGU("ldo4"), |
| 456 | [STPMIC1_LDO5] = DEFINE_REGU("ldo5"), |
| 457 | [STPMIC1_LDO6] = DEFINE_REGU("ldo6"), |
| 458 | [STPMIC1_VREF_DDR] = DEFINE_REGU("vref_ddr"), |
| 459 | [STPMIC1_BOOST] = DEFINE_REGU("boost"), |
| 460 | [STPMIC1_VBUS_OTG] = DEFINE_REGU("pwr_sw1"), |
| 461 | [STPMIC1_SW_OUT] = DEFINE_REGU("pwr_sw2"), |
| 462 | }; |
| 463 | |
| 464 | #define NB_REG ARRAY_SIZE(pmic_regs) |
| 465 | |
| 466 | static int register_pmic(void) |
| 467 | { |
| 468 | void *fdt; |
| 469 | int pmic_node, regulators_node, subnode; |
| 470 | |
| 471 | VERBOSE("Register pmic\n"); |
| 472 | |
| 473 | if (fdt_get_address(&fdt) == 0) { |
| 474 | return -FDT_ERR_NOTFOUND; |
| 475 | } |
| 476 | |
| 477 | pmic_node = dt_get_pmic_node(fdt); |
| 478 | if (pmic_node < 0) { |
| 479 | return pmic_node; |
| 480 | } |
| 481 | |
| 482 | regulators_node = fdt_subnode_offset(fdt, pmic_node, "regulators"); |
| 483 | if (regulators_node < 0) { |
| 484 | return -ENOENT; |
| 485 | } |
| 486 | |
| 487 | fdt_for_each_subnode(subnode, fdt, regulators_node) { |
| 488 | const char *reg_name = fdt_get_name(fdt, subnode, NULL); |
| 489 | const struct regul_description *desc; |
| 490 | unsigned int i; |
| 491 | int ret; |
| 492 | |
| 493 | for (i = 0; i < NB_REG; i++) { |
| 494 | desc = &pmic_regs[i]; |
| 495 | if (strcmp(desc->node_name, reg_name) == 0) { |
| 496 | break; |
| 497 | } |
| 498 | } |
| 499 | assert(i < NB_REG); |
| 500 | |
| 501 | ret = regulator_register(desc, subnode); |
| 502 | if (ret != 0) { |
| 503 | WARN("%s:%d failed to register %s\n", __func__, |
| 504 | __LINE__, reg_name); |
| 505 | return ret; |
| 506 | } |
| 507 | } |
| 508 | |
| 509 | return 0; |
| 510 | } |