mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 01:38:22 +00:00
854dfbf99b
Texas Instrument's TPS65910 PMIC contains 3 buck DC-DC converts, one boost DC-DC converter and 8 LDOs. This patch implements driver model support for the TPS65910 PMIC and its regulators making the get/set API for regulator value/enable available. This patch depends on the patch "am33xx: Add a function to query MPU voltage in uV" to build correctly. For boards relying on the DT include file tps65910.dtsi the v3 patch "power: extend prefix match to regulator-name property" and an appropriate regulator naming is also required. Signed-off-by: Felix Brack <fb@ltec.ch> Reviewed-by: Simon Glass <sjg@chromium.org>
98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
/*
|
|
* Copyright (C) EETS GmbH, 2017, Felix Brack <f.brack@eets.ch>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <i2c.h>
|
|
#include <power/pmic.h>
|
|
#include <power/regulator.h>
|
|
#include <power/tps65910_pmic.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
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)
|
|
error("%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)
|
|
error("%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,
|
|
};
|