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 <[email protected]> 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
