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+Richtek RT5033 Power management Integrated Circuit
+
+RT5033 is a Multifunction device which includes battery charger, fuel gauge,
+flash LED current source, LDO and synchronous Buck converter for portable
+applications. It is interfaced to host controller using i2c interface.
+
+Required properties:
+- compatible : Must be "richtek,rt5033"
+- reg : Specifies the i2c slave address of general part.
+- interrupts : This i2c devices has an IRQ line connected to the main SoC.
+- interrupt-parent : The parent interrupt controller.
+
+Optional node:
+Regulators: The regulators of RT5033 have to be instantiated under sub-node
+named "regulators" usinge the following format.
+
+Required properties:
+- compatible = Must be "richtek,rt5033-regulator"
+
+ regulators {
+ compatible = "richtek,rt5033-regulator";
+
+ regulator-name {
+ regulator-name = LDO/BUCK
+ standard regulator constraints...
+ };
+ };
+ refer Documentation/devicetree/bindings/regulator/regulator.txt
+
+
+Battery charger: There battery charger of RT5033 have to be instantiated under
+sub-node named "charger" using the following format.
+
+Required properties:
+- compatible : Must be "richtek,rt5033-charger".
+- richtek,pre-uamp : Current of pre-charge mode. The pre-charge current levels
+ are 350 mA to 650 mA programmed by I2C per 100 mA.
+- richtek,pre-threshold-uvolt : Voltage of threshold pre-charge mode. Battery
+ voltage is below pre-charge threshold voltage, the charger is in pre-charge
+ mode with pre-charge current. Its levels are 2.3 V to 3.8 V programmed
+ by I2C per 0.1 V.
+- richtek,fast-uamp : Current of fast-charge mode. The fast-charge current
+ levels are 700 mA to 2000 mA programmed by I2C per 100 mA.
+- richtek,const-uvolt : Battery regulation voltage of constant voltage mode.
+ This voltage level 3.65 V to 4.4 V bye I2C per 0.025 V.
+- richtek,eoc-uamp : This property is end of charge current. Its level 150 mA
+ to 200 mA.
+
+ charger {
+ compatible = "richtek,rt5033-charger";
+ richtek,pre-uamp = <350000>;
+ richtek,pre-threshold-uvolt = <3400000>;
+ richtek,fast-uamp = <2000000>;
+ richtek,const-uvolt = <4350000>;
+ richtek,eoc-uamp = <250000>;
+ };
+
+
+Fuelgauge: There fuelgauge of RT5033 to be instantiated node named "fuelgauge"
+using the following format.
+
+Required properties:
+- compatible = Must be "richtek,rt5033-battery".
+
+ i2c_fuel: i2c@1 {
+ compatible = "i2c-gpio";
+ standard i2c-gpio constraints...
+ fuelgauge {
+ compatible = "richtek,rt5033-battery".
+ };
+ };
+
+
+Example:
+
+ rt5033@34 {
+ compatible = "richtek,rt5033";
+ reg = <0x34>;
+ interrupt-parent = <&gpx1>;
+ interrupts = <5 0>;
+
+ regulators {
+ compatible = "richtek,rt5033-regulator";
+
+ buck_reg: BUCK {
+ regulator-name = "BUCK";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
+ regulator-always-on;
+ };
+ };
+
+ charger {
+ compatible = "richtek,rt5033-charger";
+ richtek,pre-uamp = <350000>;
+ richtek,pre-threshold-uvolt = <3400000>;
+ richtek,fast-uamp = <2000000>;
+ richtek,const-uvolt = <4350000>;
+ richtek,eoc-uamp = <250000>;
+ };
+
+ };
+
+ i2c_fuel: i2c@10 {
+ compatible = "i2c-gpio";
+ gpios = <&gpm3 1 0
+ &gpm3 0 0>;
+
+ fuel: rt5033-battery@35 {
+ compatible = "richtek,rt5033-battery";
+ interrupt-parent = <&gpx2>;
+ interrupts = <3 0>;
+ reg = <0x35>;
+ };
+ };
@@ -124,6 +124,7 @@ ralink Mediatek/Ralink Technology Corp.
ramtron Ramtron International
realtek Realtek Semiconductor Corp.
renesas Renesas Electronics Corporation
+richtek Richtek Technology Corporation
ricoh Ricoh Co. Ltd.
rockchip Fuzhou Rockchip Electronics Co., Ltd
samsung Samsung Semiconductor