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sunxi: axp221: Make dcdc1 voltage configurable

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The dcdc1 voltage is typically used as generic 3.3V IO voltage for things like
GPIO-s, sdcard interfaces, etc. On most boards this is undervolted to 3.0V to
safe battery, but not on all, make it configurable so that we can use the
same settings as the original firmware on all boards.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede 2014-12-13 14:12:06 +01:00
parent f70444980b
commit 1262a85fe3
3 changed files with 13 additions and 1 deletions
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2
board/sunxi/board.c
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@ -175,7 +175,7 @@ void sunxi_board_init(void)
#endif
#ifdef CONFIG_AXP221_POWER
power_failed = axp221_init();
power_failed |= axp221_set_dcdc1(3000);
power_failed |= axp221_set_dcdc1(CONFIG_AXP221_DCDC1_VOLT);
power_failed |= axp221_set_dcdc2(1200);
power_failed |= axp221_set_dcdc3(1200);
power_failed |= axp221_set_dcdc4(1200);

2
configs/Mele_M9_defconfig
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@ -7,6 +7,8 @@ CONFIG_FDTFILE="sun6i-a31-m9.dtb"
+S:CONFIG_TARGET_MELE_M9=y
+S:CONFIG_DRAM_CLK=312
+S:CONFIG_DRAM_ZQ=120
# The Mele M9 uses 3.3V for general IO
+S:CONFIG_AXP221_DCDC1_VOLT=3300
# Ethernet phy power
+S:CONFIG_AXP221_DLDO1_VOLT=3300
# USB hub power

10
drivers/power/Kconfig
View File

@ -6,6 +6,16 @@ config AXP221_POWER
Say y here to enable support for the axp221 / axp223 pmic found on most
sun6i (A31) / sun8i (A23) boards.
config AXP221_DCDC1_VOLT
int "axp221 dcdc1 voltage"
depends on AXP221_POWER
default 3000
---help---
Set the voltage (mV) to program the axp221 dcdc1 at, set to 0 to
disable dcdc1. This is typically used as generic 3.3V IO voltage for
things like GPIO-s, sdcard interfaces, etc. On most boards this is
undervolted to 3.0V to safe battery.
config AXP221_DLDO1_VOLT
int "axp221 dldo1 voltage"
depends on AXP221_POWER