sunxi: axp221: Allow specifying dcdc2 voltage via Kconfig
Allow specifying the axp221 dcdc2 voltage via Kconfig, this is necessary
because on some boards the 1.2V default does not work reliable.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index f85e825..680523a 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -437,7 +437,7 @@
#ifdef CONFIG_AXP221_POWER
power_failed = axp221_init();
power_failed |= axp221_set_dcdc1(CONFIG_AXP221_DCDC1_VOLT);
- power_failed |= axp221_set_dcdc2(1200); /* A31:VDD-GPU, A23:VDD-SYS */
+ power_failed |= axp221_set_dcdc2(CONFIG_AXP221_DCDC2_VOLT);
power_failed |= axp221_set_dcdc3(1200); /* VDD-CPU */
#ifdef CONFIG_MACH_SUN6I
power_failed |= axp221_set_dcdc4(1200); /* A31:VDD-SYS */
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 23cdd71..df5e373 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -22,6 +22,15 @@
things like GPIO-s, sdcard interfaces, etc. On most boards this is
undervolted to 3.0V to safe battery.
+config AXP221_DCDC2_VOLT
+ int "axp221 dcdc2 voltage"
+ depends on AXP221_POWER
+ default 1200
+ ---help---
+ Set the voltage (mV) to program the axp221 dcdc2 at, set to 0 to
+ disable dcdc2. On A31 boards this is typically used for VDD-GPU,
+ on A23/A33 for VDD-SYS, this should normally be set to 1.2V.
+
config AXP221_DLDO1_VOLT
int "axp221 dldo1 voltage"
depends on AXP221_POWER