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power: pmic: tps65941: Add support for tps65941 family of PMICs
Add support to bind the regulators/child nodes with the pmic. Signed-off-by: Keerthy <j-keerthy@ti.com>
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@ -275,3 +275,10 @@ config SPL_PMIC_LP87565
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help
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help
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The LP87565 is a PMIC containing a bunch of SMPS.
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The LP87565 is a PMIC containing a bunch of SMPS.
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This driver binds the pmic children in SPL.
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This driver binds the pmic children in SPL.
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config PMIC_TPS65941
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bool "Enable driver for Texas Instruments TPS65941 PMIC"
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depends on DM_PMIC
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help
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The TPS65941 is a PMIC containing a bunch of SMPS & LDOs.
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This driver binds the pmic children.
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@ -39,3 +39,4 @@ obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
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obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o
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obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o
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obj-$(CONFIG_POWER_HI6553) += pmic_hi6553.o
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obj-$(CONFIG_POWER_HI6553) += pmic_hi6553.o
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obj-$(CONFIG_POWER_MC34VR500) += pmic_mc34vr500.o
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obj-$(CONFIG_POWER_MC34VR500) += pmic_mc34vr500.o
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obj-$(CONFIG_PMIC_TPS65941) += tps65941.o
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83
drivers/power/pmic/tps65941.c
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83
drivers/power/pmic/tps65941.c
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@ -0,0 +1,83 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2019 Texas Instruments Incorporated, <www.ti.com>
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* Keerthy <j-keerthy@ti.com>
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <errno.h>
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#include <dm.h>
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#include <i2c.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/tps65941.h>
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#include <dm/device.h>
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static const struct pmic_child_info pmic_children_info[] = {
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{ .prefix = "ldo", .driver = TPS65941_LDO_DRIVER },
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{ .prefix = "buck", .driver = TPS65941_BUCK_DRIVER },
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{ },
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};
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static int tps65941_write(struct udevice *dev, uint reg, const uint8_t *buff,
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int len)
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{
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if (dm_i2c_write(dev, reg, buff, len)) {
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pr_err("write error to device: %p register: %#x!\n", dev, reg);
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return -EIO;
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}
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return 0;
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}
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static int tps65941_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
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{
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if (dm_i2c_read(dev, reg, buff, len)) {
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pr_err("read error from device: %p register: %#x!\n", dev, reg);
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return -EIO;
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}
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return 0;
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}
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static int tps65941_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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debug("%s: %s regulators subnode not found!\n", __func__,
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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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printf("%s: %s - no child found\n", __func__, 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 tps65941_ops = {
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.read = tps65941_read,
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.write = tps65941_write,
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};
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static const struct udevice_id tps65941_ids[] = {
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{ .compatible = "ti,tps659411", .data = TPS659411 },
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{ .compatible = "ti,tps659413", .data = TPS659413 },
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{ }
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};
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U_BOOT_DRIVER(pmic_tps65941) = {
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.name = "tps65941_pmic",
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.id = UCLASS_PMIC,
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.of_match = tps65941_ids,
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.bind = tps65941_bind,
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.ops = &tps65941_ops,
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};
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26
include/power/tps65941.h
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26
include/power/tps65941.h
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@ -0,0 +1,26 @@
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#define TPS659411 0x0
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#define TPS659412 0x1
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#define TPS659413 0x2
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#define TPS659414 0x3
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/* I2C device address for pmic tps65941 */
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#define TPS65941_I2C_ADDR (0x12 >> 1)
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#define TPS65941_LDO_NUM 4
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#define TPS65941_BUCK_NUM 5
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/* Drivers name */
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#define TPS65941_LDO_DRIVER "tps65941_ldo"
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#define TPS65941_BUCK_DRIVER "tps65941_buck"
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#define TPS65941_BUCK_VOLT_MASK 0xFF
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#define TPS65941_BUCK_VOLT_MAX_HEX 0xFF
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#define TPS65941_BUCK_VOLT_MAX 3340000
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#define TPS65941_BUCK_MODE_MASK 0x1
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#define TPS65941_LDO_VOLT_MASK 0x3E
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#define TPS65941_LDO_VOLT_MAX_HEX 0x3A
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#define TPS65941_LDO_VOLT_MIN_HEX 0x4
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#define TPS65941_LDO_VOLT_MAX 3300000
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#define TPS65941_LDO_MODE_MASK 0x1
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#define TPS65941_LDO_BYPASS_EN 0x80
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#define TP65941_BUCK_CONF_SLEW_MASK 0x7
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