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author | Anda-Maria Nicolae <anda-maria.nicolae@intel.com> | 2015-05-29 17:25:44 +0300 |
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committer | Sebastian Reichel <sre@kernel.org> | 2015-05-30 04:34:11 +0300 |
commit | 21472a54a1243fe92161b5b70123dd442da3b4be (patch) | |
tree | 21d574ffbd2d5b0ca8ee2547383af1915193320f | |
parent | eb82b9062bfe1fb63917d122790f2de607b4b6eb (diff) | |
download | linux-21472a54a1243fe92161b5b70123dd442da3b4be.tar.xz |
Documentation: devicetree: Add Richtek RT9455 bindings
Signed-off-by: Anda-Maria Nicolae <anda-maria.nicolae@intel.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
[added default values to optional properties]
Signed-off-by: Sebastian Reichel <sre@kernel.org>
-rw-r--r-- | Documentation/devicetree/bindings/power/rt9455_charger.txt | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/power/rt9455_charger.txt b/Documentation/devicetree/bindings/power/rt9455_charger.txt new file mode 100644 index 000000000000..5d9ad5cf2c5a --- /dev/null +++ b/Documentation/devicetree/bindings/power/rt9455_charger.txt @@ -0,0 +1,48 @@ +Binding for Richtek rt9455 battery charger + +Required properties: +- compatible: it should contain one of the following: + "richtek,rt9455". +- reg: integer, i2c address of the device. +- interrupt-parent: the phandle for the interrupt controller that + services interrupts for this device. +- interrupts: interrupt mapping for GPIO IRQ, it should be + configured with IRQ_TYPE_LEVEL_LOW flag. +- richtek,output-charge-current: integer, output current from the charger to the + battery, in uA. +- richtek,end-of-charge-percentage: integer, percent of the output charge current. + When the current in constant-voltage phase drops + below output_charge_current x end-of-charge-percentage, + charge is terminated. +- richtek,battery-regulation-voltage: integer, maximum battery voltage in uV. +- richtek,boost-output-voltage: integer, maximum voltage provided to consumer + devices, when the charger is in boost mode, in uV. + +Optional properties: +- richtek,min-input-voltage-regulation: integer, input voltage level in uV, used to + decrease voltage level when the over current + of the input power source occurs. + This prevents input voltage drop due to insufficient + current provided by the power source. + Default: 4500000 uV (4.5V) +- richtek,avg-input-current-regulation: integer, input current value in uA drained by the + charger from the power source. + Default: 500000 uA (500mA) + +Example: + +rt9455@22 { + compatible = "richtek,rt9455"; + reg = <0x22>; + + interrupt-parent = <&gpio1>; + interrupts = <0 IRQ_TYPE_LEVEL_LOW>; + + richtek,output-charge-current = <500000>; + richtek,end-of-charge-percentage = <10>; + richtek,battery-regulation-voltage = <4200000>; + richtek,boost-output-voltage = <5050000>; + + richtek,min-input-voltage-regulation = <4500000>; + richtek,avg-input-current-regulation = <500000>; +}; |