diff options
| -rw-r--r-- | board/sunxi/board.c | 1 | ||||
| -rw-r--r-- | drivers/power/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/power/axp221.c | 33 | ||||
| -rw-r--r-- | include/axp221.h | 7 |
4 files changed, 51 insertions, 0 deletions
diff --git a/board/sunxi/board.c b/board/sunxi/board.c index 7d6d075..6b19f75 100644 --- a/board/sunxi/board.c +++ b/board/sunxi/board.c @@ -189,6 +189,7 @@ void sunxi_board_init(void) power_failed |= axp221_set_aldo1(CONFIG_AXP221_ALDO1_VOLT); power_failed |= axp221_set_aldo2(CONFIG_AXP221_ALDO2_VOLT); power_failed |= axp221_set_aldo3(CONFIG_AXP221_ALDO3_VOLT); + power_failed |= axp221_set_eldo(3, CONFIG_AXP221_ELDO3_VOLT); #endif printf("DRAM:"); diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index e68e16b..f8f0239 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -63,3 +63,13 @@ config AXP221_ALDO3_VOLT Set the voltage (mV) to program the axp221 aldo3 at, set to 0 to disable aldo3. This is typically connected to VCC-PLL and AVCC and must be set to 3V. + +config AXP221_ELDO3_VOLT + int "axp221 eldo3 voltage" + depends on AXP221_POWER + default 0 + ---help--- + Set the voltage (mV) to program the axp221 eldo3 at, set to 0 to + disable eldo3. On some A31(s) tablets it might be used to supply + 1.2V for the SSD2828 chip (converter of parallel LCD interface + into MIPI DSI). diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c index 4c86f09..58bbd45 100644 --- a/drivers/power/axp221.c +++ b/drivers/power/axp221.c @@ -302,6 +302,39 @@ int axp221_set_aldo3(unsigned int mvolt) AXP221_OUTPUT_CTRL3_ALDO3_EN); } +int axp221_set_eldo(int eldo_num, unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + u8 addr, bits; + + switch (eldo_num) { + case 3: + addr = AXP221_ELDO3_CTRL; + bits = AXP221_OUTPUT_CTRL2_ELDO3_EN; + break; + case 2: + addr = AXP221_ELDO2_CTRL; + bits = AXP221_OUTPUT_CTRL2_ELDO2_EN; + break; + case 1: + addr = AXP221_ELDO1_CTRL; + bits = AXP221_OUTPUT_CTRL2_ELDO1_EN; + break; + default: + return -EINVAL; + } + + if (mvolt == 0) + return axp221_clrbits(AXP221_OUTPUT_CTRL2, bits); + + ret = pmic_bus_write(addr, cfg); + if (ret) + return ret; + + return axp221_setbits(AXP221_OUTPUT_CTRL2, bits); +} + int axp221_init(void) { /* This cannot be 0 because it is used in SPL before BSS is ready */ diff --git a/include/axp221.h b/include/axp221.h index e6639f1..6f24a61 100644 --- a/include/axp221.h +++ b/include/axp221.h @@ -26,6 +26,9 @@ #define AXP221_OUTPUT_CTRL1_ALDO1_EN (1 << 6) #define AXP221_OUTPUT_CTRL1_ALDO2_EN (1 << 7) #define AXP221_OUTPUT_CTRL2 0x12 +#define AXP221_OUTPUT_CTRL2_ELDO1_EN (1 << 0) +#define AXP221_OUTPUT_CTRL2_ELDO2_EN (1 << 1) +#define AXP221_OUTPUT_CTRL2_ELDO3_EN (1 << 2) #define AXP221_OUTPUT_CTRL2_DLDO1_EN (1 << 3) #define AXP221_OUTPUT_CTRL2_DLDO2_EN (1 << 4) #define AXP221_OUTPUT_CTRL2_DLDO3_EN (1 << 5) @@ -37,6 +40,9 @@ #define AXP221_DLDO2_CTRL 0x16 #define AXP221_DLDO3_CTRL 0x17 #define AXP221_DLDO4_CTRL 0x18 +#define AXP221_ELDO1_CTRL 0x19 +#define AXP221_ELDO2_CTRL 0x1a +#define AXP221_ELDO3_CTRL 0x1b #define AXP221_DCDC1_CTRL 0x21 #define AXP221_DCDC2_CTRL 0x22 #define AXP221_DCDC3_CTRL 0x23 @@ -69,6 +75,7 @@ int axp221_set_dldo4(unsigned int mvolt); int axp221_set_aldo1(unsigned int mvolt); int axp221_set_aldo2(unsigned int mvolt); int axp221_set_aldo3(unsigned int mvolt); +int axp221_set_eldo(int eldo_num, unsigned int mvolt); int axp221_init(void); int axp221_get_sid(unsigned int *sid); int axp_drivebus_enable(void); |