This adds documentation for the "backup" property of the axp20x driver,
that controls the charging mechanism for the backup battery on axp20x.
Signed-off-by: Paul Kocialkowski <contact@xxxxxxxx>
diff --git a/Documentation/devicetree/bindings/mfd/axp20x.txt b/Documentation/devicetree/bindings/mfd/axp20x.txt
index 9455503b0299..382776b29932 100644
--- a/Documentation/devicetree/bindings/mfd/axp20x.txt
+++ b/Documentation/devicetree/bindings/mfd/axp20x.txt
@@ -58,6 +58,11 @@ Optional properties:
See Documentation/devicetree/bindings/regulator/regulator.txt
for more information on standard regulator bindings.
+- backup: An array of two integers for backup battery charging (axp20x-only),
+ describing the charging voltage in mV first and the charging current
+ in uA second. Backup battery charging is only enabled when these two
+ fields are filled.
+
Optional properties for DCDC regulators:
- x-powers,dcdc-workmode: 1 for PWM mode, 0 for AUTO (PWM/PFM) mode
Default: Current hardware setting
@@ -256,4 +261,6 @@ axp209: pmic@34 {
/* unused but preferred to be managed by OS */
};
};
+
+ backup = <3000 200>;
};
--
2.15.1
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