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author | Sascha Hauer <s.hauer@pengutronix.de> | 2015-07-08 14:44:21 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-07-08 14:44:21 +0200 |
commit | 87360e3dd42bb627a9f2611f961728c0789e1c21 (patch) | |
tree | afefc88c862d9feafb0cdb075badeb8d32d8efd2 /dts/Bindings/power/rt9455_charger.txt | |
parent | 80936d6aaeea1b10ce4eb81c54eece2f55f8e209 (diff) | |
download | barebox-87360e3dd42bb627a9f2611f961728c0789e1c21.tar.gz barebox-87360e3dd42bb627a9f2611f961728c0789e1c21.tar.xz |
dts: update to v4.2-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/power/rt9455_charger.txt')
-rw-r--r-- | dts/Bindings/power/rt9455_charger.txt | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/dts/Bindings/power/rt9455_charger.txt b/dts/Bindings/power/rt9455_charger.txt new file mode 100644 index 0000000000..5d9ad5cf2c --- /dev/null +++ b/dts/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>; +}; |