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https://github.com/smaeul/u-boot.git
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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
140 lines
3.2 KiB
C
140 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2016 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 <dm/lists.h>
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#include <i2c.h>
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#include <log.h>
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#include <linux/printk.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/palmas.h>
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static const struct pmic_child_info pmic_children_info[] = {
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{ .prefix = "ldo", .driver = PALMAS_LDO_DRIVER },
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{ .prefix = "smps", .driver = PALMAS_SMPS_DRIVER },
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{ },
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};
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static int palmas_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 palmas_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 palmas_bind(struct udevice *dev)
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{
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ofnode pmic_node = ofnode_null(), regulators_node;
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ofnode subnode, gpio_node;
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int children, ret;
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if (IS_ENABLED(CONFIG_SYSRESET_PALMAS)) {
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ret = device_bind_driver(dev, PALMAS_RST_DRIVER,
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"sysreset", NULL);
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if (ret) {
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log_err("cannot bind SYSRESET (ret = %d)\n", ret);
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return ret;
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}
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}
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gpio_node = ofnode_find_subnode(dev_ofnode(dev), "gpio");
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if (ofnode_valid(gpio_node)) {
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ret = device_bind_driver_to_node(dev, PALMAS_GPIO_DRIVER,
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"gpio", gpio_node, NULL);
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if (ret)
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log_err("cannot bind GPIOs (ret = %d)\n", ret);
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}
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dev_for_each_subnode(subnode, dev) {
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const char *name;
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char *temp;
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name = ofnode_get_name(subnode);
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temp = strstr(name, "pmic");
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if (temp) {
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pmic_node = subnode;
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break;
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}
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}
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if (!ofnode_valid(pmic_node)) {
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debug("%s: %s pmic subnode not found!\n", __func__, dev->name);
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return -ENXIO;
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}
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regulators_node = ofnode_find_subnode(pmic_node, "regulators");
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if (!ofnode_valid(regulators_node)) {
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debug("%s: %s reg subnode not found!\n", __func__, dev->name);
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return -ENXIO;
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}
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children = pmic_bind_children(dev, regulators_node, pmic_children_info);
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if (!children)
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debug("%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 int palmas_probe(struct udevice *dev)
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{
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struct dm_i2c_chip *chip = dev_get_parent_plat(dev);
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struct palmas_priv *priv = dev_get_priv(dev);
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struct udevice *bus = dev_get_parent(dev);
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u32 chip2_addr = chip->chip_addr + 1;
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int ret;
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/* Palmas PMIC is multi chip and chips are located in a row */
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ret = i2c_get_chip(bus, chip2_addr, 1, &priv->chip2);
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if (ret) {
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log_err("cannot get second PMIC I2C chip (err %d)\n", ret);
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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 struct dm_pmic_ops palmas_ops = {
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.read = palmas_read,
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.write = palmas_write,
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};
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static const struct udevice_id palmas_ids[] = {
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{ .compatible = "ti,tps659038", .data = TPS659038 },
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{ .compatible = "ti,tps65913" , .data = TPS659038 },
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{ .compatible = "ti,tps65917" , .data = TPS65917 },
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{ }
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};
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U_BOOT_DRIVER(pmic_palmas) = {
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.name = "palmas_pmic",
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.id = UCLASS_PMIC,
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.of_match = palmas_ids,
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.bind = palmas_bind,
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.probe = palmas_probe,
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.ops = &palmas_ops,
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.priv_auto = sizeof(struct palmas_priv),
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};
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