max7762x: Refactor pmic

- Add Erista CPU/GPU pmics and Mariko CPU/GPU/DRAM pmics together with system pmic.
- Every type of pmic can be configured via the relevant functions.
- Better and easier configation of the regulators

bdk/power/max7762x.c

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2018 naehrwert
- * Copyright (c) 2019 CTCaer
+ * Copyright (c) 2019-2020 CTCaer
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -17,163 +17,322 @@
 
 #include <power/max7762x.h>
 #include <power/max77620.h>
+#include <power/max77812.h>
+#include <soc/fuse.h>
 #include <soc/i2c.h>
+#include <soc/t210.h>
 #include <utils/util.h>
 
-#define REGULATOR_SD 0
+#define REGULATOR_SD  0
 #define REGULATOR_LDO 1
+#define REGULATOR_BC0 2
+#define REGULATOR_BC1 3
 
-typedef struct _max77620_regulator_t
+typedef struct _max77620_fps_t
 {
-	u8 type;
-	const char *name;
-	u8 reg_sd;
-
-	u32 mv_step;
-	u32 mv_min;
-	u32 mv_default;
-	u32 mv_max;
-
-	u8 volt_addr;
-	u8 cfg_addr;
-
-	u8 volt_mask;
-	u8 enable_mask;
-	u8 enable_shift;
-	u8 status_mask;
-
 	u8 fps_addr;
 	u8 fps_src;
 	u8 pd_period;
 	u8 pu_period;
+} max77620_fps_t;
+
+typedef struct _max77621_ctrl_t
+{
+	u8 ctrl1_por;
+	u8 ctrl1_hos;
+	u8 ctrl2_por;
+	u8 ctrl2_hos;
+} max77621_ctrl_t;
+
+typedef struct _max77812_ctrl_t
+{
+	u8 mask;
+	u8 shift;
+	u8 rsvd0;
+	u8 rsvd1;
+} max77812_en_t;
+
+typedef struct _max77620_regulator_t
+{
+	const char *name;
+
+	u32 uv_step;
+	u32 uv_min;
+	u32 uv_default;
+	u32 uv_max;
+
+	u8 type;
+	u8 volt_addr;
+	u8 cfg_addr;
+	u8 volt_mask;
+
+	union {
+		max77620_fps_t fps;
+		max77621_ctrl_t ctrl;
+		max77812_en_t enable;
+	};
 } max77620_regulator_t;
 
 static const max77620_regulator_t _pmic_regulators[] = {
-	{  REGULATOR_SD,  "sd0", 0x16,  12500, 600000,  625000, 1400000,      MAX77620_REG_SD0,   MAX77620_REG_SD0_CFG, MAX77620_SD0_VOLT_MASK, MAX77620_SD_POWER_MODE_MASK,  MAX77620_SD_POWER_MODE_SHIFT,  0x80,  MAX77620_REG_FPS_SD0,  1, 7, 1 },
+	{  "sd0",  12500, 600000,  625000, 1400000,  REGULATOR_SD,  MAX77620_REG_SD0,      MAX77620_REG_SD0_CFG,    MAX77620_SD0_VOLT_MASK,  {{ MAX77620_REG_FPS_SD0,  1, 7, 1 }} },
-	{  REGULATOR_SD,  "sd1", 0x17,  12500, 600000, 1125000, 1125000,      MAX77620_REG_SD1,   MAX77620_REG_SD1_CFG, MAX77620_SD1_VOLT_MASK, MAX77620_SD_POWER_MODE_MASK,  MAX77620_SD_POWER_MODE_SHIFT,  0x40,  MAX77620_REG_FPS_SD1,  0, 1, 5 },
+	{  "sd1",  12500, 600000, 1125000, 1125000,  REGULATOR_SD,  MAX77620_REG_SD1,      MAX77620_REG_SD1_CFG,    MAX77620_SD1_VOLT_MASK,  {{ MAX77620_REG_FPS_SD1,  0, 1, 5 }} },
-	{  REGULATOR_SD,  "sd2", 0x18,  12500, 600000, 1325000, 1350000,      MAX77620_REG_SD2,   MAX77620_REG_SD2_CFG, MAX77620_SDX_VOLT_MASK, MAX77620_SD_POWER_MODE_MASK,  MAX77620_SD_POWER_MODE_SHIFT,  0x20,  MAX77620_REG_FPS_SD2,  1, 5, 2 },
+	{  "sd2",  12500, 600000, 1325000, 1350000,  REGULATOR_SD,  MAX77620_REG_SD2,      MAX77620_REG_SD2_CFG,    MAX77620_SDX_VOLT_MASK,  {{ MAX77620_REG_FPS_SD2,  1, 5, 2 }} },
-	{  REGULATOR_SD,  "sd3", 0x19,  12500, 600000, 1800000, 1800000,      MAX77620_REG_SD3,   MAX77620_REG_SD3_CFG, MAX77620_SDX_VOLT_MASK, MAX77620_SD_POWER_MODE_MASK,  MAX77620_SD_POWER_MODE_SHIFT,  0x10,  MAX77620_REG_FPS_SD3,  0, 3, 3 },
+	{  "sd3",  12500, 600000, 1800000, 1800000,  REGULATOR_SD,  MAX77620_REG_SD3,      MAX77620_REG_SD3_CFG,    MAX77620_SDX_VOLT_MASK,  {{ MAX77620_REG_FPS_SD3,  0, 3, 3 }} },
-	{ REGULATOR_LDO, "ldo0", 0x00,  25000, 800000, 1200000, 1200000, MAX77620_REG_LDO0_CFG, MAX77620_REG_LDO0_CFG2, MAX77620_LDO_VOLT_MASK, MAX77620_LDO_POWER_MODE_MASK, MAX77620_LDO_POWER_MODE_SHIFT, 0x00,  MAX77620_REG_FPS_LDO0, 3, 7, 0 },
+	{ "ldo0",  25000, 800000, 1200000, 1200000,  REGULATOR_LDO, MAX77620_REG_LDO0_CFG, MAX77620_REG_LDO0_CFG2,  MAX77620_LDO_VOLT_MASK,  {{ MAX77620_REG_FPS_LDO0, 3, 7, 0 }} },
-	{ REGULATOR_LDO, "ldo1", 0x00,  25000, 800000, 1050000, 1050000, MAX77620_REG_LDO1_CFG, MAX77620_REG_LDO1_CFG2, MAX77620_LDO_VOLT_MASK, MAX77620_LDO_POWER_MODE_MASK, MAX77620_LDO_POWER_MODE_SHIFT, 0x00,  MAX77620_REG_FPS_LDO1, 3, 7, 0 },
+	{ "ldo1",  25000, 800000, 1050000, 1050000,  REGULATOR_LDO, MAX77620_REG_LDO1_CFG, MAX77620_REG_LDO1_CFG2,  MAX77620_LDO_VOLT_MASK,  {{ MAX77620_REG_FPS_LDO1, 3, 7, 0 }} },
-	{ REGULATOR_LDO, "ldo2", 0x00,  50000, 800000, 1800000, 3300000, MAX77620_REG_LDO2_CFG, MAX77620_REG_LDO2_CFG2, MAX77620_LDO_VOLT_MASK, MAX77620_LDO_POWER_MODE_MASK, MAX77620_LDO_POWER_MODE_SHIFT, 0x00,  MAX77620_REG_FPS_LDO2, 3, 7, 0 },
+	{ "ldo2",  50000, 800000, 1800000, 3300000,  REGULATOR_LDO, MAX77620_REG_LDO2_CFG, MAX77620_REG_LDO2_CFG2,  MAX77620_LDO_VOLT_MASK,  {{ MAX77620_REG_FPS_LDO2, 3, 7, 0 }} },
-	{ REGULATOR_LDO, "ldo3", 0x00,  50000, 800000, 3100000, 3100000, MAX77620_REG_LDO3_CFG, MAX77620_REG_LDO3_CFG2, MAX77620_LDO_VOLT_MASK, MAX77620_LDO_POWER_MODE_MASK, MAX77620_LDO_POWER_MODE_SHIFT, 0x00,  MAX77620_REG_FPS_LDO3, 3, 7, 0 },
+	{ "ldo3",  50000, 800000, 3100000, 3100000,  REGULATOR_LDO, MAX77620_REG_LDO3_CFG, MAX77620_REG_LDO3_CFG2,  MAX77620_LDO_VOLT_MASK,  {{ MAX77620_REG_FPS_LDO3, 3, 7, 0 }} },
-	{ REGULATOR_LDO, "ldo4", 0x00,  12500, 800000,  850000, 1000000, MAX77620_REG_LDO4_CFG, MAX77620_REG_LDO4_CFG2, MAX77620_LDO_VOLT_MASK, MAX77620_LDO_POWER_MODE_MASK, MAX77620_LDO_POWER_MODE_SHIFT, 0x00,  MAX77620_REG_FPS_LDO4, 0, 7, 1 },
+	{ "ldo4",  12500, 800000,  850000, 1000000,  REGULATOR_LDO, MAX77620_REG_LDO4_CFG, MAX77620_REG_LDO4_CFG2,  MAX77620_LDO_VOLT_MASK,  {{ MAX77620_REG_FPS_LDO4, 0, 7, 1 }} },
-	{ REGULATOR_LDO, "ldo5", 0x00,  50000, 800000, 1800000, 1800000, MAX77620_REG_LDO5_CFG, MAX77620_REG_LDO5_CFG2, MAX77620_LDO_VOLT_MASK, MAX77620_LDO_POWER_MODE_MASK, MAX77620_LDO_POWER_MODE_SHIFT, 0x00,  MAX77620_REG_FPS_LDO5, 3, 7, 0 },
+	{ "ldo5",  50000, 800000, 1800000, 1800000,  REGULATOR_LDO, MAX77620_REG_LDO5_CFG, MAX77620_REG_LDO5_CFG2,  MAX77620_LDO_VOLT_MASK,  {{ MAX77620_REG_FPS_LDO5, 3, 7, 0 }} },
-	{ REGULATOR_LDO, "ldo6", 0x00,  50000, 800000, 2900000, 2900000, MAX77620_REG_LDO6_CFG, MAX77620_REG_LDO6_CFG2, MAX77620_LDO_VOLT_MASK, MAX77620_LDO_POWER_MODE_MASK, MAX77620_LDO_POWER_MODE_SHIFT, 0x00,  MAX77620_REG_FPS_LDO6, 3, 7, 0 },
+	{ "ldo6",  50000, 800000, 2900000, 2900000,  REGULATOR_LDO, MAX77620_REG_LDO6_CFG, MAX77620_REG_LDO6_CFG2,  MAX77620_LDO_VOLT_MASK,  {{ MAX77620_REG_FPS_LDO6, 3, 7, 0 }} },
-	{ REGULATOR_LDO, "ldo7", 0x00,  50000, 800000, 1050000, 1050000, MAX77620_REG_LDO7_CFG, MAX77620_REG_LDO7_CFG2, MAX77620_LDO_VOLT_MASK, MAX77620_LDO_POWER_MODE_MASK, MAX77620_LDO_POWER_MODE_SHIFT, 0x00,  MAX77620_REG_FPS_LDO7, 1, 4, 3 },
+	{ "ldo7",  50000, 800000, 1050000, 1050000,  REGULATOR_LDO, MAX77620_REG_LDO7_CFG, MAX77620_REG_LDO7_CFG2,  MAX77620_LDO_VOLT_MASK,  {{ MAX77620_REG_FPS_LDO7, 1, 4, 3 }} },
-	{ REGULATOR_LDO, "ldo8", 0x00,  50000, 800000, 1050000, 2800000, MAX77620_REG_LDO8_CFG, MAX77620_REG_LDO8_CFG2, MAX77620_LDO_VOLT_MASK, MAX77620_LDO_POWER_MODE_MASK, MAX77620_LDO_POWER_MODE_SHIFT, 0x00,  MAX77620_REG_FPS_LDO8, 3, 7, 0 }
+	{ "ldo8",  50000, 800000, 1050000, 2800000,  REGULATOR_LDO, MAX77620_REG_LDO8_CFG, MAX77620_REG_LDO8_CFG2,  MAX77620_LDO_VOLT_MASK,  {{ MAX77620_REG_FPS_LDO8, 3, 7, 0 }} },
+
+	{ "max77621_CPU", 6250, 606250, 1000000, 1400000,  REGULATOR_BC0, MAX77621_VOUT_REG,    MAX77621_VOUT_DVS_REG,  MAX77621_DVC_DVS_VOLT_MASK, {{ MAX77621_CPU_CTRL1_POR_DEFAULT, MAX77621_CPU_CTRL1_HOS_DEFAULT, MAX77621_CPU_CTRL2_POR_DEFAULT, MAX77621_CPU_CTRL2_HOS_DEFAULT }} },
+	{ "max77621_GPU", 6250, 606250, 1200000, 1400000,  REGULATOR_BC0, MAX77621_VOUT_REG,    MAX77621_VOUT_DVS_REG,  MAX77621_DVC_DVS_VOLT_MASK, {{ MAX77621_CPU_CTRL1_POR_DEFAULT, MAX77621_CPU_CTRL1_HOS_DEFAULT, MAX77621_CPU_CTRL2_POR_DEFAULT, MAX77621_CPU_CTRL2_HOS_DEFAULT }} },
+	{ "max77812_CPU", 5000, 250000,  600000, 1525000,  REGULATOR_BC1, MAX77812_REG_M4_VOUT, MAX77812_REG_EN_CTRL,   MAX77812_BUCK_VOLT_MASK,    {{ MAX77812_EN_CTRL_EN_M4_MASK, MAX77812_EN_CTRL_EN_M4_SHIFT, 0, 0 }} },
+	//{ "max77812_GPU", 5000, 250000,  600000, 1525000,  REGULATOR_BC1, MAX77812_REG_M1_VOUT, MAX77812_REG_EN_CTRL,   MAX77812_BUCK_VOLT_MASK,    {{ MAX77812_EN_CTRL_EN_M1_MASK, MAX77812_EN_CTRL_EN_M1_SHIFT, 0, 0 }} },
+	//{ "max77812_RAM", 5000, 250000,  600000, 1525000,  REGULATOR_BC1, MAX77812_REG_M3_VOUT, MAX77812_REG_EN_CTRL,   MAX77812_BUCK_VOLT_MASK,    {{ MAX77812_EN_CTRL_EN_M3_MASK, MAX77812_EN_CTRL_EN_M3_SHIFT, 0, 0 }} } // Only on PHASE211 configuration.
 };
 
-static void _max77620_set_reg(u8 reg, u8 val)
+static u8 _max77812_get_address()
+{
+	static u8 max77812_i2c_addr = 0;
+
+	if (max77812_i2c_addr)
+		return max77812_i2c_addr;
+
+	max77812_i2c_addr =
+		!(FUSE(FUSE_RESERVED_ODM28_T210B01) & 1) ? MAX77812_PHASE31_CPU_I2C_ADDR : MAX77812_PHASE211_CPU_I2C_ADDR;
+
+	return max77812_i2c_addr;
+}
+
+static u8 _max7762x_get_i2c_address(u32 id)
+{
+	const max77620_regulator_t *reg = &_pmic_regulators[id];
+
+	// Choose the correct i2c address.
+	switch (reg->type)
+	{
+	case REGULATOR_SD:
+	case REGULATOR_LDO:
+		return MAX77620_I2C_ADDR;
+	case REGULATOR_BC0:
+		return (id == REGULATOR_CPU0 ? MAX77621_CPU_I2C_ADDR : MAX77621_GPU_I2C_ADDR);
+	case REGULATOR_BC1:
+		return _max77812_get_address();
+	default:
+		return 0;
+	}
+}
+
+static void _max7762x_set_reg(u8 addr, u8 reg, u8 val)
 {
 	u32 retries = 100;
 	while (retries)
 	{
-		if (i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, reg, val))
+		if (i2c_send_byte(I2C_5, addr, reg, val))
 			break;
-		usleep(100);
+
+		usleep(50);
 		retries--;
 	}
 }
 
 int max77620_regulator_get_status(u32 id)
 {
-	if (id > REGULATOR_MAX)
+	if (id > REGULATOR_LDO8)
 		return 0;
 
 	const max77620_regulator_t *reg = &_pmic_regulators[id];
 
+	// SD power OK status.
 	if (reg->type == REGULATOR_SD)
-		return (i2c_recv_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_STATSD) & reg->status_mask) ? 0 : 1;
+	{
-	return (i2c_recv_byte(I2C_5, MAX77620_I2C_ADDR, reg->cfg_addr) & 8) ? 1 : 0;
+		u8 mask = 1u << (7 - id);
+		return (i2c_recv_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_STATSD) & mask) ? 0 : 1;
+	}
+
+	// LDO power OK status.
+	return (i2c_recv_byte(I2C_5, MAX77620_I2C_ADDR, reg->cfg_addr) & MAX77620_LDO_CFG2_POK_MASK) ? 1 : 0;
 }
 
 int max77620_regulator_config_fps(u32 id)
 {
-	if (id > REGULATOR_MAX)
+	if (id > REGULATOR_LDO8)
 		return 0;
 
 	const max77620_regulator_t *reg = &_pmic_regulators[id];
 
-	_max77620_set_reg(reg->fps_addr,
+	// Set FPS configuration.
-		(reg->fps_src << MAX77620_FPS_SRC_SHIFT) | (reg->pu_period << MAX77620_FPS_PU_PERIOD_SHIFT) | (reg->pd_period));
+	_max7762x_set_reg(MAX77620_I2C_ADDR,
+		reg->fps.fps_addr,
+		(reg->fps.fps_src   << MAX77620_FPS_SRC_SHIFT)       |
+		(reg->fps.pu_period << MAX77620_FPS_PU_PERIOD_SHIFT) |
+		(reg->fps.pd_period << MAX77620_FPS_PD_PERIOD_SHIFT));
 
 	return 1;
 }
 
-int max77620_regulator_set_voltage(u32 id, u32 mv)
+int max7762x_regulator_set_voltage(u32 id, u32 mv)
 {
 	if (id > REGULATOR_MAX)
 		return 0;
 
 	const max77620_regulator_t *reg = &_pmic_regulators[id];
 
-	if (mv < reg->mv_min || mv > reg->mv_max)
+	if (mv < reg->uv_min || mv > reg->uv_max)
 		return 0;
 
-	u32 mult = (mv + reg->mv_step - 1 - reg->mv_min) / reg->mv_step;
+	u8 addr = _max7762x_get_i2c_address(id);
-	u8 val = i2c_recv_byte(I2C_5, MAX77620_I2C_ADDR, reg->volt_addr);
+
+	// Calculate voltage multiplier.
+	u32 mult = (mv + reg->uv_step - 1 - reg->uv_min) / reg->uv_step;
+	u8 val = i2c_recv_byte(I2C_5, addr, reg->volt_addr);
 	val = (val & ~reg->volt_mask) | (mult & reg->volt_mask);
-	_max77620_set_reg(reg->volt_addr, val);
+
+	// Set voltage.
+	_max7762x_set_reg(addr, reg->volt_addr, val);
+
+	// If max77621 set DVS voltage also.
+	if (reg->type == REGULATOR_BC0)
+		_max7762x_set_reg(addr, reg->cfg_addr, MAX77621_VOUT_ENABLE_MASK | val);
+
+	// Wait for ramp up/down delay.
 	usleep(1000);
 
 	return 1;
 }
 
-int max77620_regulator_enable(u32 id, int enable)
+int max7762x_regulator_enable(u32 id, bool enable)
 {
+	u8 reg_addr;
+	u8 enable_val;
+	u8 enable_mask;
+	u8 enable_shift;
+
 	if (id > REGULATOR_MAX)
 		return 0;
 
 	const max77620_regulator_t *reg = &_pmic_regulators[id];
 
-	u32 addr = reg->type == REGULATOR_SD ? reg->cfg_addr : reg->volt_addr;
+	// Choose the correct i2c and register addresses and mask/shift for each type.
-	u8 val = i2c_recv_byte(I2C_5, MAX77620_I2C_ADDR, addr);
+	switch (reg->type)
+	{
+	case REGULATOR_SD:
+		reg_addr     = reg->cfg_addr;
+		enable_val   = MAX77620_POWER_MODE_NORMAL;
+		enable_mask  = MAX77620_SD_POWER_MODE_MASK;
+		enable_shift = MAX77620_SD_POWER_MODE_SHIFT;
+		break;
+	case REGULATOR_LDO:
+		reg_addr     = reg->volt_addr;
+		enable_val   = MAX77620_POWER_MODE_NORMAL;
+		enable_mask  = MAX77620_LDO_POWER_MODE_MASK;
+		enable_shift = MAX77620_LDO_POWER_MODE_SHIFT;
+		break;
+	case REGULATOR_BC0:
+		reg_addr     = reg->volt_addr;
+		enable_val   = MAX77621_VOUT_ENABLE;
+		enable_mask  = MAX77621_DVC_DVS_ENABLE_MASK;
+		enable_shift = MAX77621_DVC_DVS_ENABLE_SHIFT;
+		break;
+	case REGULATOR_BC1:
+		reg_addr     = reg->cfg_addr;
+		enable_val   = MAX77812_EN_CTRL_ENABLE;
+		enable_mask  = reg->enable.mask;
+		enable_shift = reg->enable.shift;
+		break;
+	default:
+		return 0;
+	}
+
+	u8 addr = _max7762x_get_i2c_address(id);
+
+	// Read and enable/disable.
+	u8 val = i2c_recv_byte(I2C_5, addr, reg_addr);
+	val &= ~enable_mask;
+
 	if (enable)
-		val = (val & ~reg->enable_mask) | ((MAX77620_POWER_MODE_NORMAL << reg->enable_shift) & reg->enable_mask);
+		val |= (enable_val << enable_shift);
-	else
+
-		val &= ~reg->enable_mask;
+	// Set enable.
-	_max77620_set_reg(addr, val);
+	_max7762x_set_reg(addr, reg_addr, val);
+
+	// Wait for enable/disable ramp delay.
 	usleep(1000);
 
 	return 1;
 }
 
-// LDO only.
+void max77620_config_gpio(u32 gpio_id, bool enable)
-int max77620_regulator_set_volt_and_flags(u32 id, u32 mv, u8 flags)
 {
-	if (id > REGULATOR_MAX)
+	if (gpio_id > 7)
-		return 0;
+		return;
 
+	// Configure as standard GPIO.
+	u8 val = i2c_recv_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_AME_GPIO);
+	i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_AME_GPIO, val & ~BIT(gpio_id));
+
+	// Set GPIO configuration.
+	if (enable)
+		val = MAX77620_CNFG_GPIO_OUTPUT_VAL_HIGH | MAX77620_CNFG_GPIO_DIR_OUTPUT | MAX77620_CNFG_GPIO_DRV_PUSHPULL;
+	else
+		val = MAX77620_CNFG_GPIO_DIR_INPUT | MAX77620_CNFG_GPIO_DRV_OPENDRAIN;
+	i2c_send_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_GPIO0 + gpio_id, val);
+}
+
+void max77621_config_default(u32 id, bool por)
+{
 	const max77620_regulator_t *reg = &_pmic_regulators[id];
 
-	if (mv < reg->mv_min || mv > reg->mv_max)
+	if (reg->type != REGULATOR_BC0)
-		return 0;
+		return;
 
-	u32 mult = (mv + reg->mv_step - 1 - reg->mv_min) / reg->mv_step;
+	u8 addr = _max7762x_get_i2c_address(id);
-	u8 val = ((flags << reg->enable_shift) & ~reg->volt_mask) | (mult & reg->volt_mask);
-	_max77620_set_reg(reg->volt_addr, val);
-	usleep(1000);
 
-	return 1;
+	if (por)
+	{
+		// Set voltage and disable power before changing the inductor.
+		max7762x_regulator_set_voltage(id, 1000000);
+		max7762x_regulator_enable(id, false);
+
+		// Configure to default.
+		i2c_send_byte(I2C_5, addr, MAX77621_CONTROL1_REG, reg->ctrl.ctrl1_por);
+		i2c_send_byte(I2C_5, addr, MAX77621_CONTROL2_REG, reg->ctrl.ctrl2_por);
+	}
+	else
+	{
+		i2c_send_byte(I2C_5, addr, MAX77621_CONTROL1_REG, reg->ctrl.ctrl1_hos);
+		i2c_send_byte(I2C_5, addr, MAX77621_CONTROL2_REG, reg->ctrl.ctrl2_hos);
+	}
 }
 
 void max77620_config_default()
 {
-	for (u32 i = 1; i <= REGULATOR_MAX; i++)
+	// Check if Erista OTP.
+	if (i2c_recv_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_CID4) != 0x35)
+		return;
+
+	// Set default voltages and enable regulators.
+	for (u32 i = 1; i <= REGULATOR_LDO8; i++)
 	{
-		i2c_recv_byte(I2C_5, MAX77620_I2C_ADDR, MAX77620_REG_CID4);
 		max77620_regulator_config_fps(i);
-		max77620_regulator_set_voltage(i, _pmic_regulators[i].mv_default);
+		max7762x_regulator_set_voltage(i, _pmic_regulators[i].uv_default);
-		if (_pmic_regulators[i].fps_src != MAX77620_FPS_SRC_NONE)
+		if (_pmic_regulators[i].fps.fps_src != MAX77620_FPS_SRC_NONE)
-			max77620_regulator_enable(i, 1);
+			max7762x_regulator_enable(i, true);
 	}
-	_max77620_set_reg(MAX77620_REG_SD_CFG2, 4);
+
+	// Enable SD0 output voltage sense and disable for SD1. Additionally disable the reserved bit.
+	_max7762x_set_reg(MAX77620_I2C_ADDR, MAX77620_REG_SD_CFG2, MAX77620_SD_CNF2_ROVS_EN_SD0);
 }
 
 void max77620_low_battery_monitor_config(bool enable)
 {
-	_max77620_set_reg(MAX77620_REG_CNFGGLBL1,
+	_max7762x_set_reg(MAX77620_I2C_ADDR, MAX77620_REG_CNFGGLBL1,
-		MAX77620_CNFGGLBL1_LBDAC_EN | (enable ? MAX77620_CNFGGLBL1_MPPLD : 0) |
+		MAX77620_CNFGGLBL1_LBDAC_EN             |
-		MAX77620_CNFGGLBL1_LBHYST_200 | MAX77620_CNFGGLBL1_LBDAC_2800);
+		(enable ? MAX77620_CNFGGLBL1_MPPLD : 0) |
+		MAX77620_CNFGGLBL1_LBHYST_200           |
+		MAX77620_CNFGGLBL1_LBDAC_2800);
 }

bdk/power/max7762x.h

@@ -58,7 +58,12 @@
 #define REGULATOR_LDO6 10
 #define REGULATOR_LDO7 11
 #define REGULATOR_LDO8 12
-#define REGULATOR_MAX 12
+#define REGULATOR_CPU0 13
+#define REGULATOR_GPU0 14
+#define REGULATOR_CPU1 15
+//#define REGULATOR_GPU1 16
+//#define REGULATOR_GPU1 17
+#define REGULATOR_MAX  15
 
 #define MAX77621_CPU_I2C_ADDR 0x1B
 #define MAX77621_GPU_I2C_ADDR 0x1C
@@ -132,10 +137,12 @@
 
 int max77620_regulator_get_status(u32 id);
 int max77620_regulator_config_fps(u32 id);
-int max77620_regulator_set_voltage(u32 id, u32 mv);
+int max7762x_regulator_set_voltage(u32 id, u32 mv);
-int max77620_regulator_enable(u32 id, int enable);
+int max7762x_regulator_enable(u32 id, bool enable);
-int max77620_regulator_set_volt_and_flags(u32 id, u32 mv, u8 flags);
+void max77620_config_gpio(u32 id, bool enable);
 void max77620_config_default();
 void max77620_low_battery_monitor_config(bool enable);
 
+void max77621_config_default(u32 id, bool por);
+
 #endif

bdk/power/max77812.h

@@ -73,6 +73,8 @@
 #define MAX77812_REG_GLB_CFG1		0x33
 #define MAX77812_REG_GLB_CFG2		0x34
 #define MAX77812_REG_GLB_CFG3		0x35
+
+/*! Protected area and settings only for MAX77812_REG_VERSION 4 */
 #define MAX77812_REG_GLB_CFG4		0x36
 #define MAX77812_REG_GLB_CFG5		0x37
 #define MAX77812_REG_GLB_CFG6		0x38