summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--board/sunxi/board.c1
-rw-r--r--drivers/power/Kconfig10
-rw-r--r--drivers/power/axp221.c33
-rw-r--r--include/axp221.h7
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);