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power: regulator: tps6287x: Add driver for TPS6287x step down convertors
Add driver for TPS6287x step down convertors Data sheet: https://www.ti.com/lit/ds/slvsgc5a/slvsgc5a.pdf Signed-off-by: Keerthy <j-keerthy@ti.com>
This commit is contained in:
Keerthy
Tom Rini
parent
cbaf53fdf1
commit
07c12525bb
@ -383,6 +383,15 @@ config DM_REGULATOR_TPS80031
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features for TPS80031/TPS80032 PMICs. The driver implements
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get/set api for: value and enable.
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config DM_REGULATOR_TPS6287X
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bool "Enable driver for TPS6287x Power Regulator"
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depends on DM_REGULATOR
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help
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The TPS6287X is a step down converter with a fast transient
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response. This driver supports all four variants of the chip
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(TPS62870, TPS62871, TPS62872, TPS62873). It implements the
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get/set api for value only, as the power line is always on.
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config DM_REGULATOR_STPMIC1
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bool "Enable driver for STPMIC1 regulators"
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depends on DM_REGULATOR && PMIC_STPMIC1
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@ -402,6 +411,15 @@ config DM_REGULATOR_ANATOP
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regulators. It is recommended that this option be enabled on
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i.MX6 platform.
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config SPL_DM_REGULATOR_TPS6287X
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bool "Enable driver for TPS6287x Power Regulator"
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depends on SPL_DM_REGULATOR
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help
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The TPS6287X is a step down converter with a fast transient
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response. This driver supports all four variants of the chip
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(TPS62870, TPS62871, TPS62872, TPS62873). It implements the
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get/set api for value only, as the power line is always on.
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config SPL_DM_REGULATOR_STPMIC1
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bool "Enable driver for STPMIC1 regulators in SPL"
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depends on SPL_DM_REGULATOR && PMIC_STPMIC1
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@ -35,6 +35,7 @@ obj-$(CONFIG_$(SPL_)DM_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
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obj-$(CONFIG_DM_REGULATOR_TPS65910) += tps65910_regulator.o
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obj-$(CONFIG_$(SPL_)DM_REGULATOR_TPS65911) += tps65911_regulator.o
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obj-$(CONFIG_DM_REGULATOR_TPS62360) += tps62360_regulator.o
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obj-$(CONFIG_$(SPL_)DM_REGULATOR_TPS6287X) += tps6287x_regulator.o
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obj-$(CONFIG_$(SPL_)DM_REGULATOR_TPS80031) += tps80031_regulator.o
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obj-$(CONFIG_$(SPL_)DM_REGULATOR_STPMIC1) += stpmic1.o
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obj-$(CONFIG_DM_REGULATOR_TPS65941) += tps65941_regulator.o
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172
drivers/power/regulator/tps6287x_regulator.c
Normal file
172
drivers/power/regulator/tps6287x_regulator.c
Normal file
@ -0,0 +1,172 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2024 Texas Instruments Incorporated - http://www.ti.com/
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* Keerthy <j-keerthy@ti.com>
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*/
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#include <dm.h>
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#include <i2c.h>
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#include <dm/device_compat.h>
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#include <power/regulator.h>
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#define TPS6287X_REG_VSET 0x0
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#define TPS6287X_REG_CONTROL1 0x1
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#define TPS6287X_REG_CONTROL2 0x2
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#define TPS6287X_REG_CONTROL3 0x3
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#define TPS6287X_REG_STATUS 0x4
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#define TPS6287X_REG_VSET_VSET_MASK 0xff
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#define TPS6287X_REG_CONTROL2_VRANGE_MASK 0xc
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struct tps6287x_regulator_config {
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u32 vmin;
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u32 vmax;
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};
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struct tps6287x_regulator_pdata {
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u8 vsel_offset;
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struct udevice *i2c;
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struct tps6287x_regulator_config *config;
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};
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static struct tps6287x_regulator_config tps6287x_data = {
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.vmin = 400000,
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.vmax = 3350000,
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};
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static int tps6287x_regulator_set_value(struct udevice *dev, int uV)
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{
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struct tps6287x_regulator_pdata *pdata = dev_get_plat(dev);
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u8 regval, vset;
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int ret;
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if (uV < pdata->config->vmin || uV > pdata->config->vmax)
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return -EINVAL;
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/*
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* Based on the value of VRANGE bit field of CONTROL2 reg the range
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* varies.
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*/
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ret = dm_i2c_read(pdata->i2c, TPS6287X_REG_CONTROL2, ®val, 1);
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if (ret) {
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dev_err(dev, "CTRL2 reg read failed: %d\n", ret);
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return ret;
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}
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regval &= TPS6287X_REG_CONTROL2_VRANGE_MASK;
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regval >>= ffs(TPS6287X_REG_CONTROL2_VRANGE_MASK) - 1;
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/*
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* VRANGE = 0. Increment step 1250 uV starting with 0 --> 400000 uV
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* VRANGE = 1. Increment step 2500 uV starting with 0 --> 400000 uV
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* VRANGE = 2. Increment step 5000 uV starting with 0 --> 400000 uV
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* VRANGE = 3. Increment step 10000 uV starting with 0 --> 800000 uV
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*/
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switch (regval) {
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case 0:
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vset = (uV - 400000) / 1250;
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break;
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case 1:
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vset = (uV - 400000) / 2500;
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break;
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case 2:
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vset = (uV - 400000) / 5000;
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break;
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case 3:
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vset = (uV - 800000) / 10000;
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break;
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default:
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pr_err("%s: invalid regval %d\n", dev->name, regval);
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return -EINVAL;
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}
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return dm_i2c_write(pdata->i2c, TPS6287X_REG_VSET, &vset, 1);
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}
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static int tps6287x_regulator_get_value(struct udevice *dev)
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{
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u8 regval, vset;
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int uV;
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int ret;
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struct tps6287x_regulator_pdata *pdata = dev_get_plat(dev);
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/*
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* Based on the value of VRANGE bit field of CONTROL2 reg the range
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* varies.
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*/
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ret = dm_i2c_read(pdata->i2c, TPS6287X_REG_CONTROL2, ®val, 1);
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if (ret) {
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dev_err(dev, "i2c read failed: %d\n", ret);
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return ret;
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}
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regval &= TPS6287X_REG_CONTROL2_VRANGE_MASK;
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regval >>= ffs(TPS6287X_REG_CONTROL2_VRANGE_MASK) - 1;
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ret = dm_i2c_read(pdata->i2c, TPS6287X_REG_VSET, &vset, 1);
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if (ret) {
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dev_err(dev, "i2c VSET read failed: %d\n", ret);
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return ret;
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}
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/*
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* VRANGE = 0. Increment step 1250 uV starting with 0 --> 400000 uV
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* VRANGE = 1. Increment step 2500 uV starting with 0 --> 400000 uV
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* VRANGE = 2. Increment step 5000 uV starting with 0 --> 400000 uV
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* VRANGE = 3. Increment step 10000 uV starting with 0 --> 800000 uV
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*/
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switch (regval) {
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case 0:
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uV = 400000 + vset * 1250;
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break;
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case 1:
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uV = 400000 + vset * 2500;
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break;
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case 2:
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uV = 400000 + vset * 5000;
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break;
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case 3:
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uV = 800000 + vset * 10000;
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break;
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default:
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pr_err("%s: invalid regval %d\n", dev->name, regval);
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return -EINVAL;
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}
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return uV;
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}
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static int tps6287x_regulator_probe(struct udevice *dev)
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{
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struct tps6287x_regulator_pdata *pdata = dev_get_plat(dev);
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int ret, slave_id;
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pdata->config = (void *)dev_get_driver_data(dev);
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slave_id = devfdt_get_addr_index(dev, 0);
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ret = i2c_get_chip(dev->parent, slave_id, 1, &pdata->i2c);
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if (ret) {
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dev_err(dev, "i2c dev get failed.\n");
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return ret;
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}
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return 0;
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}
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static const struct dm_regulator_ops tps6287x_regulator_ops = {
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.get_value = tps6287x_regulator_get_value,
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.set_value = tps6287x_regulator_set_value,
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};
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static const struct udevice_id tps6287x_regulator_ids[] = {
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{ .compatible = "ti,tps62873", .data = (ulong)&tps6287x_data },
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{ },
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};
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U_BOOT_DRIVER(tps6287x_regulator) = {
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.name = "tps6287x_regulator",
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.id = UCLASS_REGULATOR,
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.ops = &tps6287x_regulator_ops,
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.of_match = tps6287x_regulator_ids,
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.plat_auto = sizeof(struct tps6287x_regulator_pdata),
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.probe = tps6287x_regulator_probe,
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};
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