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power: pmic: rk808: add RK818 support

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The RK818 chip is a Power Management IC (PMIC) for multimedia and handheld
devices.

For boards use rk818, the input current should be set in the early stage, before
ddr initialization.

Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
This commit is contained in:
Jacob Chen 2017-05-02 14:54:49 +08:00 committed by Simon Glass
parent 1daa93c0b4
commit d77af8a8c9
2 changed files with 28 additions and 0 deletions
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16
drivers/power/pmic/rk808.c
View File

@ -80,6 +80,20 @@ static int rk808_bind(struct udevice *dev)
}
#endif
static int rk808_probe(struct udevice *dev)
{
struct rk808_priv *priv = dev_get_priv(dev);
uint8_t msb, lsb;
/* read Chip variant */
rk808_read(dev, ID_MSB, &msb, 1);
rk808_read(dev, ID_LSB, &lsb, 1);
priv->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
return 0;
}
static struct dm_pmic_ops rk808_ops = {
.reg_count = rk808_reg_count,
.read = rk808_read,
@ -88,6 +102,7 @@ static struct dm_pmic_ops rk808_ops = {
static const struct udevice_id rk808_ids[] = {
{ .compatible = "rockchip,rk808" },
{ .compatible = "rockchip,rk818" },
{ }
};
@ -98,5 +113,6 @@ U_BOOT_DRIVER(pmic_rk808) = {
#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
.bind = rk808_bind,
#endif
.probe = rk808_probe,
.ops = &rk808_ops,
};

12
include/power/rk808_pmic.h
View File

@ -170,12 +170,24 @@ enum {
RK808_NUM_OF_REGS,
};
enum {
RK805_ID = 0x8050,
RK808_ID = 0x0000,
RK818_ID = 0x8180,
};
#define RK8XX_ID_MSK 0xfff0
struct rk808_reg_table {
char *name;
u8 reg_ctl;
u8 reg_vol;
};
struct rk808_priv {
int variant;
};
int rk808_spl_configure_buck(struct udevice *pmic, int buck, int uvolt);
#endif