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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) EETS GmbH, 2017, Felix Brack <f.brack@eets.ch>
- */
- #include <common.h>
- #include <dm.h>
- #include <i2c.h>
- #include <log.h>
- #include <power/pmic.h>
- #include <power/regulator.h>
- #include <power/tps65910_pmic.h>
- static const struct pmic_child_info pmic_children_info[] = {
- { .prefix = "ldo_", .driver = TPS65910_LDO_DRIVER },
- { .prefix = "buck_", .driver = TPS65910_BUCK_DRIVER },
- { .prefix = "boost_", .driver = TPS65910_BOOST_DRIVER },
- { },
- };
- static int pmic_tps65910_reg_count(struct udevice *dev)
- {
- return TPS65910_NUM_REGS;
- }
- static int pmic_tps65910_write(struct udevice *dev, uint reg, const u8 *buffer,
- int len)
- {
- int ret;
- ret = dm_i2c_write(dev, reg, buffer, len);
- if (ret)
- pr_err("%s write error on register %02x\n", dev->name, reg);
- return ret;
- }
- static int pmic_tps65910_read(struct udevice *dev, uint reg, u8 *buffer,
- int len)
- {
- int ret;
- ret = dm_i2c_read(dev, reg, buffer, len);
- if (ret)
- pr_err("%s read error on register %02x\n", dev->name, reg);
- return ret;
- }
- static int pmic_tps65910_bind(struct udevice *dev)
- {
- ofnode regulators_node;
- int children;
- regulators_node = dev_read_subnode(dev, "regulators");
- if (!ofnode_valid(regulators_node)) {
- debug("%s regulators subnode not found\n", dev->name);
- return -EINVAL;
- }
- children = pmic_bind_children(dev, regulators_node, pmic_children_info);
- if (!children)
- debug("%s has no children (regulators)\n", dev->name);
- return 0;
- }
- static int pmic_tps65910_probe(struct udevice *dev)
- {
- /* use I2C control interface instead of I2C smartreflex interface to
- * access smartrefelex registers VDD1_OP_REG, VDD1_SR_REG, VDD2_OP_REG
- * and VDD2_SR_REG
- */
- return pmic_clrsetbits(dev, TPS65910_REG_DEVICE_CTRL, 0,
- TPS65910_I2C_SEL_MASK);
- }
- static struct dm_pmic_ops pmic_tps65910_ops = {
- .reg_count = pmic_tps65910_reg_count,
- .read = pmic_tps65910_read,
- .write = pmic_tps65910_write,
- };
- static const struct udevice_id pmic_tps65910_match[] = {
- { .compatible = "ti,tps65910" },
- { /* sentinel */ }
- };
- U_BOOT_DRIVER(pmic_tps65910) = {
- .name = "pmic_tps65910",
- .id = UCLASS_PMIC,
- .of_match = pmic_tps65910_match,
- .bind = pmic_tps65910_bind,
- .probe = pmic_tps65910_probe,
- .ops = &pmic_tps65910_ops,
- };
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