From 6906df1ab8d64a4e21d38ea538d6cd383a089e1d Mon Sep 17 00:00:00 2001 From: Siarhei Siamashka Date: Mon, 19 Jan 2015 05:23:30 +0200 Subject: sunxi: axp221: Add ELDO[1-3] support And also add Kconfig option for selecting ELDO3 voltage. The reason for having this option is that the Android kernel sets ELDO3 to 1.2V when powering up LCD in the case if 'lcd_if' configuration variable is set to 6 (LCD_IF_EXT_DSI) in the FEX file. Most likely to supply power for a SSD2828 chip. However on the MSI Primo81 tablet, which is using this particular 'lcd_if = 6' setup for LCD, setting the ELDO3 voltage appears to be unnecessary and it works regardless. Having no schematics of this tablet, I can only guess that 1.2V is supplied to SSD2828 in some other way. Signed-off-by: Siarhei Siamashka Acked-by: Hans de Goede Signed-off-by: Hans de Goede --- include/axp221.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include') 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); -- cgit v1.1