Add support to bind the regulators/child nodes with the pmic. Signed-off-by: Keerthy <j-keerthy@ti.com> Reviewed-by: Simon Glass <sjg@chromium.org>master
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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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* SPDX-License-Identifier: GPL-2.0+ |
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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/lp873x.h> |
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#include <dm/device.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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static const struct pmic_child_info pmic_children_info[] = { |
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{ .prefix = "ldo", .driver = LP873X_LDO_DRIVER }, |
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{ .prefix = "buck", .driver = LP873X_BUCK_DRIVER }, |
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{ }, |
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}; |
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static int lp873x_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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error("write error to device: %p register: %#x!", 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 lp873x_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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error("read error from device: %p register: %#x!", 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 lp873x_bind(struct udevice *dev) |
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{ |
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int regulators_node; |
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const void *blob = gd->fdt_blob; |
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int children; |
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int node = dev->of_offset; |
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regulators_node = fdt_subnode_offset(blob, node, "regulators"); |
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if (regulators_node <= 0) { |
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printf("%s: %s reg subnode not found!", __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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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 lp873x_ops = { |
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.read = lp873x_read, |
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.write = lp873x_write, |
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}; |
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static const struct udevice_id lp873x_ids[] = { |
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{ .compatible = "ti,lp8732", .data = LP8732 }, |
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{ .compatible = "ti,lp8733" , .data = LP8733 }, |
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{ } |
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}; |
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U_BOOT_DRIVER(pmic_lp873x) = { |
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.name = "lp873x_pmic", |
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.id = UCLASS_PMIC, |
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.of_match = lp873x_ids, |
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.bind = lp873x_bind, |
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.ops = &lp873x_ops, |
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}; |
@ -0,0 +1,19 @@ |
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#define LP8732 0x0 |
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#define LP8733 0x1 |
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#define LP873X_LDO_NUM 2 |
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#define LP873X_BUCK_NUM 2 |
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/* Drivers name */ |
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#define LP873X_LDO_DRIVER "lp873x_ldo" |
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#define LP873X_BUCK_DRIVER "lp873x_buck" |
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#define LP873X_BUCK_VOLT_MASK 0xFF |
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#define LP873X_BUCK_VOLT_MAX_HEX 0xFF |
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#define LP873X_BUCK_VOLT_MAX 3360000 |
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#define LP873X_BUCK_MODE_MASK 0x1 |
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#define LP873X_LDO_VOLT_MASK 0x1F |
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#define LP873X_LDO_VOLT_MAX_HEX 0x19 |
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#define LP873X_LDO_VOLT_MAX 3300000 |
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#define LP873X_LDO_MODE_MASK 0x1 |
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