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Subject[PATCH 2/2] Documentation: Add documentation for rt5033 multifunction device
Date
This patch device tree binding documentation for rt5033 multifunction device.

Cc: Sebastian Reichel <sre@kernel.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
---
Changes in v5
- Remove wrong Acked-by.
Changes in v4
- none.
Changes in v3
- Add Acked-by
Changes in v2
- Fix incorrect typo.
- Align -uamp and -uvolt names with regulator binding suffixes.
- Drop incorrect phandle.
- Fix incorrect example.
---
Documentation/devicetree/bindings/mfd/rt5033.txt | 101 ++++++++++++++++++++
.../devicetree/bindings/vendor-prefixes.txt | 1 +
2 files changed, 102 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mfd/rt5033.txt

diff --git a/Documentation/devicetree/bindings/mfd/rt5033.txt b/Documentation/devicetree/bindings/mfd/rt5033.txt
new file mode 100644
index 0000000..64b23e8
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/rt5033.txt
@@ -0,0 +1,101 @@
+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" using the following format.
+
+ regulators {
+ regulator-name {
+ regulator-name = LDO/BUCK
+ regulator subnodes called X, Y and Z
+ };
+ };
+ 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,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,eoc-uamp : This property is end of charge current. Its level 150 mA
+ to 200 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,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.
+
+ charger {
+ compatible = "richtek,rt5033-charger";
+ richtek,pre-uamp = <350000>;
+ richtek,fast-uamp = <2000000>;
+ richtek,eoc-uamp = <250000>;
+ richtek,pre-threshold-uvolt = <3400000>;
+ richtek,const-uvolt = <4350000>;
+
+ };
+
+
+Fuelgauge: There fuelgauge of RT5033 to be instantiated node named "fuelgauge"
+using the following format.
+
+Required properties:
+- compatible = Must be "richtek,rt5033-battery".
+
+ rt5033@35 {
+ compatible = "richtek,rt5033-battery";
+ interrupt-parent = <&gpx2>;
+ interrupts = <3 0>;
+ reg = <0x35>;
+ };
+
+Example:
+
+ rt5033@34 {
+ compatible = "richtek,rt5033";
+ reg = <0x34>;
+ interrupt-parent = <&gpx1>;
+ interrupts = <5 0>;
+
+ regulators {
+ 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,fast-uamp = <2000000>;
+ richtek,eoc-uamp = <250000>;
+ richtek,pre-threshold-uvolt = <3400000>;
+ richtek,const-uvolt = <4350000>;
+ };
+
+ };
+
+ rt5033@35 {
+ compatible = "richtek,rt5033-battery";
+ interrupt-parent = <&gpx2>;
+ interrupts = <3 0>;
+ reg = <0x35>;
+ };
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 389ca13..73d235a 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -149,6 +149,7 @@ 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
--
1.7.9.5


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