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power: pmic: add the base TPS80031 PMIC support
Add support to bind the regulators/child nodes with the pmic. Also adds the pmic i2c based read/write functions to access pmic registers. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Svyatoslav Ryhel
Tom Rini
parent
cc7595a850
commit
51201e49b0
5 changed files with 215 additions and 0 deletions
76
doc/device-tree-bindings/pmic/tps80031.txt
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76
doc/device-tree-bindings/pmic/tps80031.txt
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@ -0,0 +1,76 @@
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Texas Instruments, TPS80031/TPS80032 PMIC
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This device uses two drivers:
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- drivers/power/pmic/tps80031.c (for parent device)
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- drivers/power/regulator/tps80031_regulator.c (for child regulators)
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This chapter describes the binding info for the PMIC driver and regulators.
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Required properties for PMIC:
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- compatible: "ti,tps80031" or "ti,tps80032"
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- reg: 0x48
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With those two properties, the pmic device can be used for read/write only.
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To bind each regulator, the optional regulators subnode should exists.
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Optional subnode:
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- name: regulators (subnode list of each device's regulator)
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Regulators subnode contains set on supported regulators.
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Required properties:
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- regulator-name: used for regulator uclass platform data '.name',
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List of supported regulator nodes names for tps80031/tps80032:
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- smps1, smps2, smps3, smps4, smps5
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- ldo1, ldo2, ldo3, ldo4, ldo5, ldo6, ldo7, ldoln, ldousb
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SMPS5 in Linux 3.1.10 is referred as vio, but datasheet clearly names it SMPS5.
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Optional:
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- regulator-min-microvolt: minimum allowed Voltage to set
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- regulator-max-microvolt: minimum allowed Voltage to set
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- regulator-always-on: regulator should be never disabled
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- regulator-boot-on: regulator should be enabled by the bootloader
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Example:
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tps80032@48 {
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compatible = "ti,tps80032";
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reg = <0x48>;
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regulators {
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smps1 {
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regulator-name = "vdd_cpu";
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regulator-min-microvolt = <800000>;
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regulator-max-microvolt = <1250000>;
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regulator-always-on;
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regulator-boot-on;
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};
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...
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smps5 {
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regulator-name = "vdd_1v8_gen";
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <1800000>;
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regulator-always-on;
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regulator-boot-on;
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};
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ldo1 {
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regulator-name = "avdd_dsi_csi";
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regulator-min-microvolt = <1200000>;
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regulator-max-microvolt = <1200000>;
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regulator-boot-on;
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};
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...
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ldousb {
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regulator-name = "avdd_usb";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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};
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};
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};
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@ -351,6 +351,17 @@ config DM_PMIC_TPS65910
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DC-DC converter, 8 LDOs and a RTC. This driver binds the SMPS and LDO
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pmic children.
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config DM_PMIC_TPS80031
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bool "Enable driver for Texas Instruments TPS80031/TPS80032 PMIC"
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---help---
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This config enables implementation of driver-model pmic uclass features
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for TPS80031/TPS80032 PMICs. The driver implements read/write operations.
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This is a Power Management IC with a decent set of peripherals from which
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5 Buck Converters refered as Switched-mode power supply (SMPS), 11 General-
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Purpose Low-Dropout Voltage Regulators (LDO), USB OTG Module, Real-Time
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Clock (RTC) with Timer and Alarm Wake-Up, Two Digital PWM Outputs and more
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with I2C Compatible Interface. PMIC occupies 4 I2C addresses.
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config PMIC_STPMIC1
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bool "Enable support for STMicroelectronics STPMIC1 PMIC"
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depends on DM_I2C
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@ -27,6 +27,7 @@ obj-$(CONFIG_$(SPL_)PMIC_RN5T567) += rn5t567.o
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obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
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obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
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obj-$(CONFIG_DM_PMIC_TPS65910) += pmic_tps65910_dm.o
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obj-$(CONFIG_$(SPL_)DM_PMIC_TPS80031) += tps80031.o
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obj-$(CONFIG_$(SPL_)PMIC_PALMAS) += palmas.o
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obj-$(CONFIG_$(SPL_)PMIC_LP873X) += lp873x.o
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obj-$(CONFIG_$(SPL_)PMIC_LP87565) += lp87565.o
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82
drivers/power/pmic/tps80031.c
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drivers/power/pmic/tps80031.c
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#include <dm.h>
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#include <dm/lists.h>
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#include <power/pmic.h>
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#include <power/tps80031.h>
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static const struct pmic_child_info pmic_children_info[] = {
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{ .prefix = "ldo", .driver = TPS80031_LDO_DRIVER },
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{ .prefix = "smps", .driver = TPS80031_SMPS_DRIVER },
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{ },
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};
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static int tps80031_write(struct udevice *dev, uint reg, const uint8_t *buff,
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int len)
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{
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int ret;
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ret = dm_i2c_write(dev, reg, buff, len);
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if (ret) {
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log_debug("write error to device: %p register: %#x!\n", dev, reg);
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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 int tps80031_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
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{
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int ret;
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ret = dm_i2c_read(dev, reg, buff, len);
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if (ret) {
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log_debug("read error from device: %p register: %#x!\n", dev, reg);
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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 int tps80031_bind(struct udevice *dev)
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{
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ofnode regulators_node;
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int children;
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regulators_node = dev_read_subnode(dev, "regulators");
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if (!ofnode_valid(regulators_node)) {
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log_err("%s regulators subnode not found!\n", dev->name);
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return -ENXIO;
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}
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debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
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children = pmic_bind_children(dev, regulators_node, pmic_children_info);
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if (!children)
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log_err("%s - no child found\n", dev->name);
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/* Always return success for this device */
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return 0;
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}
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static struct dm_pmic_ops tps80031_ops = {
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.read = tps80031_read,
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.write = tps80031_write,
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};
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static const struct udevice_id tps80031_ids[] = {
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{ .compatible = "ti,tps80031" },
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{ .compatible = "ti,tps80032" },
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{ }
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};
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U_BOOT_DRIVER(pmic_tps80031) = {
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.name = "tps80031_pmic",
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.id = UCLASS_PMIC,
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.of_match = tps80031_ids,
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.bind = tps80031_bind,
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.ops = &tps80031_ops,
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};
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45
include/power/tps80031.h
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45
include/power/tps80031.h
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/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#ifndef _TPS80031_H_
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#define _TPS80031_H_
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#define TPS80031_LDO_NUM 9
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#define TPS80031_SMPS_NUM 5
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/* Drivers name */
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#define TPS80031_LDO_DRIVER "tps80031_ldo"
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#define TPS80031_SMPS_DRIVER "tps80031_smps"
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#define TPS80031_SMPS_OFFSET 0xe0
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#define TPS80031_OFFSET_FLAG BIT(0)
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#define REGULATOR_STATUS_MASK 0x3
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#define REGULATOR_MODE_ON 0x1
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/* Switched-Mode Power Supply Regulator calculations */
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#define SMPS_VOLT_MASK 0x3f
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#define SMPS_VOLT_LINEAR_HEX 0x39
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#define SMPS_VOLT_NLINEAR_HEX 0x3a
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#define SMPS_VOLT_LINEAR 1300000
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#define SMPS_VOLT_BASE 600000
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#define SMPS_VOLT_BASE_OFFSET 700000
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/* Low-Dropout Linear (LDO) Regulator calculations */
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#define LDO_VOLT_MASK 0x3f
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#define LDO_VOLT_MAX_HEX 0x18
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#define LDO_VOLT_MIN_HEX 0x01
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#define LDO_VOLT_MAX 3360000
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#define LDO_VOLT_MIN 1018000
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#define LDO_VOLT_BASE 916000
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/* register groups */
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enum {
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CTRL,
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VOLT,
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OFFSET,
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};
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#endif /* _TPS80031_H_ */
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