281 lines
6.7 KiB
C
281 lines
6.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <dm/lists.h>
|
|
#include <errno.h>
|
|
#include <log.h>
|
|
#include <power/rk8xx_pmic.h>
|
|
#include <power/pmic.h>
|
|
#include <sysreset.h>
|
|
|
|
static int rk8xx_sysreset_request(struct udevice *dev, enum sysreset_t type)
|
|
{
|
|
struct rk8xx_priv *priv = dev_get_priv(dev->parent);
|
|
|
|
if (type != SYSRESET_POWER_OFF)
|
|
return -EPROTONOSUPPORT;
|
|
|
|
switch (priv->variant) {
|
|
case RK805_ID:
|
|
case RK808_ID:
|
|
case RK816_ID:
|
|
case RK818_ID:
|
|
pmic_clrsetbits(dev->parent, REG_DEVCTRL, 0, BIT(0));
|
|
break;
|
|
case RK809_ID:
|
|
case RK817_ID:
|
|
pmic_clrsetbits(dev->parent, RK817_REG_SYS_CFG3, 0,
|
|
BIT(0));
|
|
break;
|
|
default:
|
|
printf("Unknown PMIC RK%x: Cannot shutdown\n",
|
|
priv->variant);
|
|
return -EPROTONOSUPPORT;
|
|
};
|
|
|
|
return -EINPROGRESS;
|
|
}
|
|
|
|
static struct sysreset_ops rk8xx_sysreset_ops = {
|
|
.request = rk8xx_sysreset_request,
|
|
};
|
|
|
|
U_BOOT_DRIVER(rk8xx_sysreset) = {
|
|
.name = "rk8xx_sysreset",
|
|
.id = UCLASS_SYSRESET,
|
|
.ops = &rk8xx_sysreset_ops,
|
|
};
|
|
|
|
/* In the event of a plug-in and the appropriate option has been
|
|
* selected, we simply shutdown instead of continue the normal boot
|
|
* process. Please note the rk808 is not supported as it doesn't
|
|
* have the appropriate register.
|
|
*/
|
|
void rk8xx_off_for_plugin(struct udevice *dev)
|
|
{
|
|
struct rk8xx_priv *priv = dev_get_priv(dev);
|
|
|
|
switch (priv->variant) {
|
|
case RK805_ID:
|
|
case RK816_ID:
|
|
case RK818_ID:
|
|
if (pmic_reg_read(dev, RK8XX_ON_SOURCE) & RK8XX_ON_PLUG_IN) {
|
|
printf("Power Off due to plug-in event\n");
|
|
pmic_clrsetbits(dev, REG_DEVCTRL, 0, BIT(0));
|
|
}
|
|
break;
|
|
case RK809_ID:
|
|
case RK817_ID:
|
|
if (pmic_reg_read(dev, RK817_ON_SOURCE) & RK8XX_ON_PLUG_IN) {
|
|
printf("Power Off due to plug-in event\n");
|
|
pmic_clrsetbits(dev, RK817_REG_SYS_CFG3, 0,
|
|
BIT(0));
|
|
}
|
|
break;
|
|
default:
|
|
printf("PMIC RK%x: Cannot read boot reason.\n",
|
|
priv->variant);
|
|
}
|
|
}
|
|
|
|
static struct reg_data rk817_init_reg[] = {
|
|
/* enable the under-voltage protection,
|
|
* the under-voltage protection will shutdown the LDO3 and reset the PMIC
|
|
*/
|
|
{ RK817_BUCK4_CMIN, 0x60, 0x60},
|
|
};
|
|
|
|
static const struct pmic_child_info pmic_children_info[] = {
|
|
{ .prefix = "DCDC_REG", .driver = "rk8xx_buck"},
|
|
{ .prefix = "LDO_REG", .driver = "rk8xx_ldo"},
|
|
{ .prefix = "SWITCH_REG", .driver = "rk8xx_switch"},
|
|
{ },
|
|
};
|
|
|
|
static int rk8xx_reg_count(struct udevice *dev)
|
|
{
|
|
return RK808_NUM_OF_REGS;
|
|
}
|
|
|
|
static int rk8xx_write(struct udevice *dev, uint reg, const uint8_t *buff,
|
|
int len)
|
|
{
|
|
int ret;
|
|
|
|
ret = dm_i2c_write(dev, reg, buff, len);
|
|
if (ret) {
|
|
debug("write error to device: %p register: %#x!\n", dev, reg);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rk8xx_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
|
|
{
|
|
int ret;
|
|
|
|
ret = dm_i2c_read(dev, reg, buff, len);
|
|
if (ret) {
|
|
debug("read error from device: %p register: %#x!\n", dev, reg);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
|
|
static int rk8xx_bind(struct udevice *dev)
|
|
{
|
|
ofnode regulators_node;
|
|
int children, ret;
|
|
|
|
regulators_node = dev_read_subnode(dev, "regulators");
|
|
if (!ofnode_valid(regulators_node)) {
|
|
debug("%s: %s regulators subnode not found!\n", __func__,
|
|
dev->name);
|
|
return -ENXIO;
|
|
}
|
|
|
|
debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
|
|
|
|
if (CONFIG_IS_ENABLED(SYSRESET)) {
|
|
ret = device_bind_driver_to_node(dev, "rk8xx_sysreset",
|
|
"rk8xx_sysreset",
|
|
dev_ofnode(dev), NULL);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
children = pmic_bind_children(dev, regulators_node, pmic_children_info);
|
|
if (!children)
|
|
debug("%s: %s - no child found\n", __func__, dev->name);
|
|
|
|
/* Always return success for this device */
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int rk8xx_probe(struct udevice *dev)
|
|
{
|
|
struct rk8xx_priv *priv = dev_get_priv(dev);
|
|
struct reg_data *init_data = NULL;
|
|
int init_data_num = 0;
|
|
int ret = 0, i, show_variant;
|
|
u8 msb, lsb, id_msb, id_lsb;
|
|
u8 on_source = 0, off_source = 0;
|
|
u8 power_en0, power_en1, power_en2, power_en3;
|
|
u8 value;
|
|
|
|
/* read Chip variant */
|
|
if (device_is_compatible(dev, "rockchip,rk817") ||
|
|
device_is_compatible(dev, "rockchip,rk809")) {
|
|
id_msb = RK817_ID_MSB;
|
|
id_lsb = RK817_ID_LSB;
|
|
} else {
|
|
id_msb = ID_MSB;
|
|
id_lsb = ID_LSB;
|
|
}
|
|
|
|
ret = rk8xx_read(dev, id_msb, &msb, 1);
|
|
if (ret)
|
|
return ret;
|
|
ret = rk8xx_read(dev, id_lsb, &lsb, 1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
priv->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
|
|
show_variant = priv->variant;
|
|
switch (priv->variant) {
|
|
case RK808_ID:
|
|
show_variant = 0x808; /* RK808 hardware ID is 0 */
|
|
break;
|
|
case RK805_ID:
|
|
case RK816_ID:
|
|
case RK818_ID:
|
|
on_source = RK8XX_ON_SOURCE;
|
|
off_source = RK8XX_OFF_SOURCE;
|
|
break;
|
|
case RK809_ID:
|
|
case RK817_ID:
|
|
on_source = RK817_ON_SOURCE;
|
|
off_source = RK817_OFF_SOURCE;
|
|
init_data = rk817_init_reg;
|
|
init_data_num = ARRAY_SIZE(rk817_init_reg);
|
|
power_en0 = pmic_reg_read(dev, RK817_POWER_EN0);
|
|
power_en1 = pmic_reg_read(dev, RK817_POWER_EN1);
|
|
power_en2 = pmic_reg_read(dev, RK817_POWER_EN2);
|
|
power_en3 = pmic_reg_read(dev, RK817_POWER_EN3);
|
|
|
|
value = (power_en0 & 0x0f) | ((power_en1 & 0x0f) << 4);
|
|
pmic_reg_write(dev, RK817_POWER_EN_SAVE0, value);
|
|
value = (power_en2 & 0x0f) | ((power_en3 & 0x0f) << 4);
|
|
pmic_reg_write(dev, RK817_POWER_EN_SAVE1, value);
|
|
break;
|
|
default:
|
|
printf("Unknown PMIC: RK%x!!\n", priv->variant);
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < init_data_num; i++) {
|
|
ret = pmic_clrsetbits(dev,
|
|
init_data[i].reg,
|
|
init_data[i].mask,
|
|
init_data[i].val);
|
|
if (ret < 0) {
|
|
printf("%s: i2c set reg 0x%x failed, ret=%d\n",
|
|
__func__, init_data[i].reg, ret);
|
|
}
|
|
|
|
debug("%s: reg[0x%x] = 0x%x\n", __func__, init_data[i].reg,
|
|
pmic_reg_read(dev, init_data[i].reg));
|
|
}
|
|
|
|
printf("PMIC: RK%x ", show_variant);
|
|
|
|
if (on_source && off_source)
|
|
printf("(on=0x%02x, off=0x%02x)",
|
|
pmic_reg_read(dev, on_source),
|
|
pmic_reg_read(dev, off_source));
|
|
printf("\n");
|
|
if (CONFIG_IS_ENABLED(ROCKCHIP_RK8XX_DISABLE_BOOT_ON_POWERON))
|
|
rk8xx_off_for_plugin(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct dm_pmic_ops rk8xx_ops = {
|
|
.reg_count = rk8xx_reg_count,
|
|
.read = rk8xx_read,
|
|
.write = rk8xx_write,
|
|
};
|
|
|
|
static const struct udevice_id rk8xx_ids[] = {
|
|
{ .compatible = "rockchip,rk805" },
|
|
{ .compatible = "rockchip,rk808" },
|
|
{ .compatible = "rockchip,rk809" },
|
|
{ .compatible = "rockchip,rk816" },
|
|
{ .compatible = "rockchip,rk817" },
|
|
{ .compatible = "rockchip,rk818" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(rockchip_rk805) = {
|
|
.name = "rockchip_rk805",
|
|
.id = UCLASS_PMIC,
|
|
.of_match = rk8xx_ids,
|
|
#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
|
|
.bind = rk8xx_bind,
|
|
#endif
|
|
.priv_auto = sizeof(struct rk8xx_priv),
|
|
.probe = rk8xx_probe,
|
|
.ops = &rk8xx_ops,
|
|
};
|
|
|
|
DM_DRIVER_ALIAS(rockchip_rk805, rockchip_rk808)
|