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power: axp818: Add support for FLDOs

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The FLDOs on AXP818 PMIC normally provide power to CPUS and USB HSIC PHY
on the A83T/H8.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Chen-Yu Tsai 2016-03-30 00:26:48 +08:00 committed by Hans de Goede
parent 4c6a9ca103
commit 38491d9c65
5 changed files with 69 additions and 0 deletions
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6
board/sunxi/board.c
View file

@ -486,6 +486,12 @@ void sunxi_board_init(void)
power_failed |= axp_set_eldo(2, CONFIG_AXP_ELDO2_VOLT);
power_failed |= axp_set_eldo(3, CONFIG_AXP_ELDO3_VOLT);
#endif
#ifdef CONFIG_AXP818_POWER
power_failed |= axp_set_fldo(1, CONFIG_AXP_FLDO1_VOLT);
power_failed |= axp_set_fldo(2, CONFIG_AXP_FLDO2_VOLT);
power_failed |= axp_set_fldo(3, CONFIG_AXP_FLDO3_VOLT);
#endif
#endif
printf("DRAM:");
ramsize = sunxi_dram_init();

27
drivers/power/Kconfig
View file

@ -238,6 +238,33 @@ config AXP_ELDO3_VOLT
1.2V for the SSD2828 chip (converter of parallel LCD interface
into MIPI DSI).
config AXP_FLDO1_VOLT
int "axp pmic fldo1 voltage"
depends on AXP818_POWER
default 0 if MACH_SUN8I_A83T
---help---
Set the voltage (mV) to program the axp pmic fldo1 at, set to 0 to
disable fldo1.
On A83T / H8 boards fldo1 is VCC-HSIC and should be 1.2V if HSIC is
used.
config AXP_FLDO2_VOLT
int "axp pmic eldo2 voltage"
depends on AXP818_POWER
default 900 if MACH_SUN8I_A83T
---help---
Set the voltage (mV) to program the axp pmic fldo2 at, set to 0 to
disable fldo2.
On A83T / H8 boards fldo2 is VCC-CPUS and should be 0.9V.
config AXP_FLDO3_VOLT
int "axp pmic fldo3 voltage"
depends on AXP818_POWER
default 0
---help---
Set the voltage (mV) to program the axp pmic fldo3 at, set to 0 to
disable fldo3.
config SY8106A_VOUT1_VOLT
int "SY8106A pmic VOUT1 voltage"
depends on SY8106A_POWER

34
drivers/power/axp818.c
View file

@ -191,6 +191,40 @@ int axp_set_eldo(int eldo_num, unsigned int mvolt)
AXP818_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
}
int axp_set_fldo(int fldo_num, unsigned int mvolt)
{
int ret;
u8 cfg;
if (fldo_num < 1 || fldo_num > 3)
return -EINVAL;
if (mvolt == 0)
return pmic_bus_clrbits(AXP818_OUTPUT_CTRL3,
AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1));
if (fldo_num < 3) {
cfg = axp818_mvolt_to_cfg(mvolt, 700, 1450, 50);
ret = pmic_bus_write(AXP818_FLDO1_CTRL + (fldo_num - 1), cfg);
} else {
/*
* Special case for FLDO3, which is DCDC5 / 2 or FLDOIN / 2
* Since FLDOIN is unknown, test against DCDC5.
*/
if (mvolt * 2 == CONFIG_AXP_DCDC5_VOLT)
ret = pmic_bus_clrbits(AXP818_FLDO2_3_CTRL,
AXP818_FLDO2_3_CTRL_FLDO3_VOL);
else
ret = pmic_bus_setbits(AXP818_FLDO2_3_CTRL,
AXP818_FLDO2_3_CTRL_FLDO3_VOL);
}
if (ret)
return ret;
return pmic_bus_setbits(AXP818_OUTPUT_CTRL3,
AXP818_OUTPUT_CTRL3_FLDO1_EN << (fldo_num - 1));
}
int axp_init(void)
{
u8 axp_chip_id;

1
include/axp818.h
View file

@ -41,6 +41,7 @@
#define AXP818_ELDO3_CTRL 0x1b
#define AXP818_FLDO1_CTRL 0x1c
#define AXP818_FLDO2_3_CTRL 0x1d
#define AXP818_FLDO2_3_CTRL_FLDO3_VOL (1 << 4)
#define AXP818_DCDC1_CTRL 0x20
#define AXP818_DCDC2_CTRL 0x21
#define AXP818_DCDC3_CTRL 0x22

1
include/axp_pmic.h
View file

@ -31,6 +31,7 @@ int axp_set_aldo3(unsigned int mvolt);
int axp_set_aldo4(unsigned int mvolt);
int axp_set_dldo(int dldo_num, unsigned int mvolt);
int axp_set_eldo(int eldo_num, unsigned int mvolt);
int axp_set_fldo(int fldo_num, unsigned int mvolt);
int axp_init(void);
int axp_get_sid(unsigned int *sid);