sun6i: Add basic axp221 driver
The A31 uses the AXP221 pmic for various voltages.
Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
--
Changes in v2:
-Rebase
Changes in v3:
-Add support for all dldo and aldo-s
-Add Kconfig option to select building AXP221 and to select voltage of
dldo and aldo-s
Changes in v4:
-Add axp221_setbits helper function
-Use symbolic names for enabled bits in CTRL1 - CTRL3 registers
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index e69de29..1ec7c0e 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -0,0 +1,47 @@
+config AXP221_POWER
+ boolean "axp221 pmic support"
+ depends on MACH_SUN6I
+ default y
+ ---help---
+ Say y here to enable support for the axp221 pmic found on most sun6i
+ (A31) boards.
+
+config AXP221_DLDO1_VOLT
+ int "axp221 dldo1 voltage"
+ depends on AXP221_POWER
+ default -1
+ ---help---
+ Set the voltage (mV) to program the axp221 dldo1 at, set to -1 to
+ disable dldo1.
+
+config AXP221_DLDO4_VOLT
+ int "axp221 dldo4 voltage"
+ depends on AXP221_POWER
+ default -1
+ ---help---
+ Set the voltage (mV) to program the axp221 dldo4 at, set to -1 to
+ disable dldo4.
+
+config AXP221_ALDO1_VOLT
+ int "axp221 aldo1 voltage"
+ depends on AXP221_POWER
+ default -1
+ ---help---
+ Set the voltage (mV) to program the axp221 aldo1 at, set to -1 to
+ disable aldo1.
+
+config AXP221_ALDO2_VOLT
+ int "axp221 aldo2 voltage"
+ depends on AXP221_POWER
+ default -1
+ ---help---
+ Set the voltage (mV) to program the axp221 aldo2 at, set to -1 to
+ disable aldo2.
+
+config AXP221_ALDO3_VOLT
+ int "axp221 aldo3 voltage"
+ depends on AXP221_POWER
+ default -1
+ ---help---
+ Set the voltage (mV) to program the axp221 aldo3 at, set to -1 to
+ disable aldo3.