1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+ 2854dfbf9SFelix Brack /* 3854dfbf9SFelix Brack * Copyright (C) EETS GmbH, 2017, Felix Brack <f.brack@eets.ch> 4854dfbf9SFelix Brack */ 5854dfbf9SFelix Brack 6854dfbf9SFelix Brack #include <common.h> 7854dfbf9SFelix Brack #include <dm.h> 8854dfbf9SFelix Brack #include <i2c.h> 9854dfbf9SFelix Brack #include <power/pmic.h> 10854dfbf9SFelix Brack #include <power/regulator.h> 11854dfbf9SFelix Brack #include <power/tps65910_pmic.h> 12854dfbf9SFelix Brack 13854dfbf9SFelix Brack static const struct pmic_child_info pmic_children_info[] = { 14854dfbf9SFelix Brack { .prefix = "ldo_", .driver = TPS65910_LDO_DRIVER }, 15854dfbf9SFelix Brack { .prefix = "buck_", .driver = TPS65910_BUCK_DRIVER }, 16854dfbf9SFelix Brack { .prefix = "boost_", .driver = TPS65910_BOOST_DRIVER }, 17854dfbf9SFelix Brack { }, 18854dfbf9SFelix Brack }; 19854dfbf9SFelix Brack 20854dfbf9SFelix Brack static int pmic_tps65910_reg_count(struct udevice *dev) 21854dfbf9SFelix Brack { 22854dfbf9SFelix Brack return TPS65910_NUM_REGS; 23854dfbf9SFelix Brack } 24854dfbf9SFelix Brack 25854dfbf9SFelix Brack static int pmic_tps65910_write(struct udevice *dev, uint reg, const u8 *buffer, 26854dfbf9SFelix Brack int len) 27854dfbf9SFelix Brack { 28854dfbf9SFelix Brack int ret; 29854dfbf9SFelix Brack 30854dfbf9SFelix Brack ret = dm_i2c_write(dev, reg, buffer, len); 31854dfbf9SFelix Brack if (ret) 3246caea7fSFelix Brack pr_err("%s write error on register %02x\n", dev->name, reg); 33854dfbf9SFelix Brack 34854dfbf9SFelix Brack return ret; 35854dfbf9SFelix Brack } 36854dfbf9SFelix Brack 37854dfbf9SFelix Brack static int pmic_tps65910_read(struct udevice *dev, uint reg, u8 *buffer, 38854dfbf9SFelix Brack int len) 39854dfbf9SFelix Brack { 40854dfbf9SFelix Brack int ret; 41854dfbf9SFelix Brack 42854dfbf9SFelix Brack ret = dm_i2c_read(dev, reg, buffer, len); 43854dfbf9SFelix Brack if (ret) 4446caea7fSFelix Brack pr_err("%s read error on register %02x\n", dev->name, reg); 45854dfbf9SFelix Brack 46854dfbf9SFelix Brack return ret; 47854dfbf9SFelix Brack } 48854dfbf9SFelix Brack 49854dfbf9SFelix Brack static int pmic_tps65910_bind(struct udevice *dev) 50854dfbf9SFelix Brack { 51854dfbf9SFelix Brack ofnode regulators_node; 52854dfbf9SFelix Brack int children; 53854dfbf9SFelix Brack 54854dfbf9SFelix Brack regulators_node = dev_read_subnode(dev, "regulators"); 55854dfbf9SFelix Brack if (!ofnode_valid(regulators_node)) { 56854dfbf9SFelix Brack debug("%s regulators subnode not found\n", dev->name); 57854dfbf9SFelix Brack return -EINVAL; 58854dfbf9SFelix Brack } 59854dfbf9SFelix Brack 60854dfbf9SFelix Brack children = pmic_bind_children(dev, regulators_node, pmic_children_info); 61854dfbf9SFelix Brack if (!children) 62854dfbf9SFelix Brack debug("%s has no children (regulators)\n", dev->name); 63854dfbf9SFelix Brack 64854dfbf9SFelix Brack return 0; 65854dfbf9SFelix Brack } 66854dfbf9SFelix Brack 67854dfbf9SFelix Brack static int pmic_tps65910_probe(struct udevice *dev) 68854dfbf9SFelix Brack { 69854dfbf9SFelix Brack /* use I2C control interface instead of I2C smartreflex interface to 70854dfbf9SFelix Brack * access smartrefelex registers VDD1_OP_REG, VDD1_SR_REG, VDD2_OP_REG 71854dfbf9SFelix Brack * and VDD2_SR_REG 72854dfbf9SFelix Brack */ 73854dfbf9SFelix Brack return pmic_clrsetbits(dev, TPS65910_REG_DEVICE_CTRL, 0, 74854dfbf9SFelix Brack TPS65910_I2C_SEL_MASK); 75854dfbf9SFelix Brack } 76854dfbf9SFelix Brack 77854dfbf9SFelix Brack static struct dm_pmic_ops pmic_tps65910_ops = { 78854dfbf9SFelix Brack .reg_count = pmic_tps65910_reg_count, 79854dfbf9SFelix Brack .read = pmic_tps65910_read, 80854dfbf9SFelix Brack .write = pmic_tps65910_write, 81854dfbf9SFelix Brack }; 82854dfbf9SFelix Brack 83854dfbf9SFelix Brack static const struct udevice_id pmic_tps65910_match[] = { 84854dfbf9SFelix Brack { .compatible = "ti,tps65910" }, 85854dfbf9SFelix Brack { /* sentinel */ } 86854dfbf9SFelix Brack }; 87854dfbf9SFelix Brack 88854dfbf9SFelix Brack U_BOOT_DRIVER(pmic_tps65910) = { 89854dfbf9SFelix Brack .name = "pmic_tps65910", 90854dfbf9SFelix Brack .id = UCLASS_PMIC, 91854dfbf9SFelix Brack .of_match = pmic_tps65910_match, 92854dfbf9SFelix Brack .bind = pmic_tps65910_bind, 93854dfbf9SFelix Brack .probe = pmic_tps65910_probe, 94854dfbf9SFelix Brack .ops = &pmic_tps65910_ops, 95854dfbf9SFelix Brack }; 96