From: Sean Wang <sean.wang@xxxxxxxxxxxx>
This patch adds documentation for devicetree bindings
for LED support on MT6323 PMIC
Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
---
.../devicetree/bindings/leds/leds-mt6323.txt | 64 ++++++++++++++++++++++
1 file changed, 64 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/leds-mt6323.txt
diff --git a/Documentation/devicetree/bindings/leds/leds-mt6323.txt b/Documentation/devicetree/bindings/leds/leds-mt6323.txt
new file mode 100644
index 0000000..950b8c6
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-mt6323.txt
@@ -0,0 +1,64 @@
+Device Tree Bindings for LED support on MT6323 PMIC
+
+MT6323 LED controller is subfunction provided by
+MT6323 PMIC, so the LED controllers are defined as
+the subnode of the function node provided by MT6323
+PMIC controller that is being defined as one kind of
+Muti-Function Device (MFD) using shared bus called
+PMIC wrapper for each subfunction to access remote
+MT6323 PMIC hardware.
+
+For MT6323 MFD bindings see:
+Documentation/devicetree/bindings/mfd/mt6397.txt
+For MediaTek PMIC wrapper bindings see:
+Documentation/devicetree/bindings/soc/mediatek/pwrap.txt
+
+There's sub-node for the LED controller that describes
+the initial behavior for each LED physically and currently
+only four LED sub-nodes can be supported.
+
+Required properties:
+- compatible : Must be "mediatek,mt6323-led"
+- reg : LED channel number (0..3)
+
+Optional properties:
+- label : (optional)
+ see Documentation/devicetree/bindings/leds/common.txt
+- linux,default-trigger : (optional)
+ see Documentation/devicetree/bindings/leds/common.txt
+- default-state: (optional) The initial state of the LED
+ see Documentation/devicetree/bindings/leds/common.txt
+
+Example:
+
+&pwrap {
+ pmic: mt6323 {
+ compatible = "mediatek,mt6323";
+ interrupt-parent = <&pio>;
+ interrupts = <150 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ mt6323led: mt6323led{
+ compatible = "mediatek,mt6323-led";
+
+ led0: isink0 {
+ reg = <0>;
+ label = "LED0"
+ linux,default-trigger = "timer";
+ default-state = "on";
+ };
+ led1: isink1 {
+ reg = <1>;
+ label = "LED1";
+ default-state = "on";
+ };
+ led2: isink2 {
+ reg = <2>;
+ label = "LED2";
+ linux,default-trigger = "timer";
+ default-state = "off";
+ };
+ };
+ };
+};
--
1.9.1
