upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
354 lines
6.5 KiB
354 lines
6.5 KiB
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2016
|
|
* Texas Instruments Incorporated, <www.ti.com>
|
|
*
|
|
* Keerthy <j-keerthy@ti.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <fdtdec.h>
|
|
#include <errno.h>
|
|
#include <dm.h>
|
|
#include <i2c.h>
|
|
#include <power/pmic.h>
|
|
#include <power/regulator.h>
|
|
#include <power/lp873x.h>
|
|
|
|
static const char lp873x_buck_ctrl[LP873X_BUCK_NUM] = {0x2, 0x4};
|
|
static const char lp873x_buck_volt[LP873X_BUCK_NUM] = {0x6, 0x7};
|
|
static const char lp873x_ldo_ctrl[LP873X_LDO_NUM] = {0x8, 0x9};
|
|
static const char lp873x_ldo_volt[LP873X_LDO_NUM] = {0xA, 0xB};
|
|
|
|
static int lp873x_buck_enable(struct udevice *dev, int op, bool *enable)
|
|
{
|
|
int ret;
|
|
unsigned int adr;
|
|
struct dm_regulator_uclass_platdata *uc_pdata;
|
|
|
|
uc_pdata = dev_get_uclass_platdata(dev);
|
|
adr = uc_pdata->ctrl_reg;
|
|
|
|
ret = pmic_reg_read(dev->parent, adr);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (op == PMIC_OP_GET) {
|
|
ret &= LP873X_BUCK_MODE_MASK;
|
|
|
|
if (ret)
|
|
*enable = true;
|
|
else
|
|
*enable = false;
|
|
|
|
return 0;
|
|
} else if (op == PMIC_OP_SET) {
|
|
if (*enable)
|
|
ret |= LP873X_BUCK_MODE_MASK;
|
|
else
|
|
ret &= ~(LP873X_BUCK_MODE_MASK);
|
|
ret = pmic_reg_write(dev->parent, adr, ret);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lp873x_buck_volt2hex(int uV)
|
|
{
|
|
if (uV > LP873X_BUCK_VOLT_MAX)
|
|
return -EINVAL;
|
|
else if (uV > 1400000)
|
|
return (uV - 1420000) / 20000 + 0x9E;
|
|
else if (uV > 730000)
|
|
return (uV - 735000) / 5000 + 0x18;
|
|
else if (uV >= 700000)
|
|
return (uV - 700000) / 10000 + 0x1;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int lp873x_buck_hex2volt(int hex)
|
|
{
|
|
if (hex > LP873X_BUCK_VOLT_MAX_HEX)
|
|
return -EINVAL;
|
|
else if (hex > 0x9D)
|
|
return 1400000 + (hex - 0x9D) * 20000;
|
|
else if (hex > 0x17)
|
|
return 730000 + (hex - 0x17) * 5000;
|
|
else if (hex >= 0x14)
|
|
return 700000 + (hex - 0x14) * 10000;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int lp873x_buck_val(struct udevice *dev, int op, int *uV)
|
|
{
|
|
unsigned int hex, adr;
|
|
int ret;
|
|
struct dm_regulator_uclass_platdata *uc_pdata;
|
|
|
|
uc_pdata = dev_get_uclass_platdata(dev);
|
|
|
|
if (op == PMIC_OP_GET)
|
|
*uV = 0;
|
|
|
|
adr = uc_pdata->volt_reg;
|
|
|
|
ret = pmic_reg_read(dev->parent, adr);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (op == PMIC_OP_GET) {
|
|
ret &= LP873X_BUCK_VOLT_MASK;
|
|
ret = lp873x_buck_hex2volt(ret);
|
|
if (ret < 0)
|
|
return ret;
|
|
*uV = ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
hex = lp873x_buck_volt2hex(*uV);
|
|
if (hex < 0)
|
|
return hex;
|
|
|
|
ret &= 0x0;
|
|
ret |= hex;
|
|
|
|
ret = pmic_reg_write(dev->parent, adr, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lp873x_ldo_enable(struct udevice *dev, int op, bool *enable)
|
|
{
|
|
int ret;
|
|
unsigned int adr;
|
|
struct dm_regulator_uclass_platdata *uc_pdata;
|
|
|
|
uc_pdata = dev_get_uclass_platdata(dev);
|
|
adr = uc_pdata->ctrl_reg;
|
|
|
|
ret = pmic_reg_read(dev->parent, adr);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (op == PMIC_OP_GET) {
|
|
ret &= LP873X_LDO_MODE_MASK;
|
|
|
|
if (ret)
|
|
*enable = true;
|
|
else
|
|
*enable = false;
|
|
|
|
return 0;
|
|
} else if (op == PMIC_OP_SET) {
|
|
if (*enable)
|
|
ret |= LP873X_LDO_MODE_MASK;
|
|
else
|
|
ret &= ~(LP873X_LDO_MODE_MASK);
|
|
|
|
ret = pmic_reg_write(dev->parent, adr, ret);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int lp873x_ldo_volt2hex(int uV)
|
|
{
|
|
if (uV > LP873X_LDO_VOLT_MAX)
|
|
return -EINVAL;
|
|
|
|
return (uV - 800000) / 100000;
|
|
}
|
|
|
|
static int lp873x_ldo_hex2volt(int hex)
|
|
{
|
|
if (hex > LP873X_LDO_VOLT_MAX_HEX)
|
|
return -EINVAL;
|
|
|
|
if (!hex)
|
|
return 0;
|
|
|
|
return (hex * 100000) + 800000;
|
|
}
|
|
|
|
static int lp873x_ldo_val(struct udevice *dev, int op, int *uV)
|
|
{
|
|
unsigned int hex, adr;
|
|
int ret;
|
|
|
|
struct dm_regulator_uclass_platdata *uc_pdata;
|
|
|
|
if (op == PMIC_OP_GET)
|
|
*uV = 0;
|
|
|
|
uc_pdata = dev_get_uclass_platdata(dev);
|
|
|
|
adr = uc_pdata->volt_reg;
|
|
|
|
ret = pmic_reg_read(dev->parent, adr);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (op == PMIC_OP_GET) {
|
|
ret &= LP873X_LDO_VOLT_MASK;
|
|
ret = lp873x_ldo_hex2volt(ret);
|
|
if (ret < 0)
|
|
return ret;
|
|
*uV = ret;
|
|
return 0;
|
|
}
|
|
|
|
hex = lp873x_ldo_volt2hex(*uV);
|
|
if (hex < 0)
|
|
return hex;
|
|
|
|
ret &= ~LP873X_LDO_VOLT_MASK;
|
|
ret |= hex;
|
|
if (*uV > 1650000)
|
|
ret |= 0x80;
|
|
ret = pmic_reg_write(dev->parent, adr, ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int lp873x_ldo_probe(struct udevice *dev)
|
|
{
|
|
struct dm_regulator_uclass_platdata *uc_pdata;
|
|
|
|
uc_pdata = dev_get_uclass_platdata(dev);
|
|
uc_pdata->type = REGULATOR_TYPE_LDO;
|
|
|
|
int idx = dev->driver_data;
|
|
if (idx >= LP873X_LDO_NUM) {
|
|
printf("Wrong ID for regulator\n");
|
|
return -1;
|
|
}
|
|
|
|
uc_pdata->ctrl_reg = lp873x_ldo_ctrl[idx];
|
|
uc_pdata->volt_reg = lp873x_ldo_volt[idx];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ldo_get_value(struct udevice *dev)
|
|
{
|
|
int uV;
|
|
int ret;
|
|
|
|
ret = lp873x_ldo_val(dev, PMIC_OP_GET, &uV);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return uV;
|
|
}
|
|
|
|
static int ldo_set_value(struct udevice *dev, int uV)
|
|
{
|
|
return lp873x_ldo_val(dev, PMIC_OP_SET, &uV);
|
|
}
|
|
|
|
static int ldo_get_enable(struct udevice *dev)
|
|
{
|
|
bool enable = false;
|
|
int ret;
|
|
|
|
ret = lp873x_ldo_enable(dev, PMIC_OP_GET, &enable);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return enable;
|
|
}
|
|
|
|
static int ldo_set_enable(struct udevice *dev, bool enable)
|
|
{
|
|
return lp873x_ldo_enable(dev, PMIC_OP_SET, &enable);
|
|
}
|
|
|
|
static int lp873x_buck_probe(struct udevice *dev)
|
|
{
|
|
struct dm_regulator_uclass_platdata *uc_pdata;
|
|
int idx;
|
|
|
|
uc_pdata = dev_get_uclass_platdata(dev);
|
|
uc_pdata->type = REGULATOR_TYPE_BUCK;
|
|
|
|
idx = dev->driver_data;
|
|
if (idx >= LP873X_BUCK_NUM) {
|
|
printf("Wrong ID for regulator\n");
|
|
return -1;
|
|
}
|
|
|
|
uc_pdata->ctrl_reg = lp873x_buck_ctrl[idx];
|
|
uc_pdata->volt_reg = lp873x_buck_volt[idx];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int buck_get_value(struct udevice *dev)
|
|
{
|
|
int uV;
|
|
int ret;
|
|
|
|
ret = lp873x_buck_val(dev, PMIC_OP_GET, &uV);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return uV;
|
|
}
|
|
|
|
static int buck_set_value(struct udevice *dev, int uV)
|
|
{
|
|
return lp873x_buck_val(dev, PMIC_OP_SET, &uV);
|
|
}
|
|
|
|
static int buck_get_enable(struct udevice *dev)
|
|
{
|
|
bool enable = false;
|
|
int ret;
|
|
|
|
|
|
ret = lp873x_buck_enable(dev, PMIC_OP_GET, &enable);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return enable;
|
|
}
|
|
|
|
static int buck_set_enable(struct udevice *dev, bool enable)
|
|
{
|
|
return lp873x_buck_enable(dev, PMIC_OP_SET, &enable);
|
|
}
|
|
|
|
static const struct dm_regulator_ops lp873x_ldo_ops = {
|
|
.get_value = ldo_get_value,
|
|
.set_value = ldo_set_value,
|
|
.get_enable = ldo_get_enable,
|
|
.set_enable = ldo_set_enable,
|
|
};
|
|
|
|
U_BOOT_DRIVER(lp873x_ldo) = {
|
|
.name = LP873X_LDO_DRIVER,
|
|
.id = UCLASS_REGULATOR,
|
|
.ops = &lp873x_ldo_ops,
|
|
.probe = lp873x_ldo_probe,
|
|
};
|
|
|
|
static const struct dm_regulator_ops lp873x_buck_ops = {
|
|
.get_value = buck_get_value,
|
|
.set_value = buck_set_value,
|
|
.get_enable = buck_get_enable,
|
|
.set_enable = buck_set_enable,
|
|
};
|
|
|
|
U_BOOT_DRIVER(lp873x_buck) = {
|
|
.name = LP873X_BUCK_DRIVER,
|
|
.id = UCLASS_REGULATOR,
|
|
.ops = &lp873x_buck_ops,
|
|
.probe = lp873x_buck_probe,
|
|
};
|
|
|