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Date: Fri, 3 Mar 2017 21:56:22 +0800 From: <sean.wang@...iatek.com> To: <rpurdie@...ys.net>, <jacek.anaszewski@...il.com>, <lee.jones@...aro.org>, <matthias.bgg@...il.com>, <pavel@....cz>, <robh+dt@...nel.org>, <mark.rutland@....com> CC: <devicetree@...r.kernel.org>, <linux-leds@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, <keyhaede@...il.com>, Sean Wang <sean.wang@...iatek.com> Subject: [PATCH v5 1/4] dt-bindings: leds: Add document bindings for leds-mt6323 From: Sean Wang <sean.wang@...iatek.com> This patch adds documentation for devicetree bindings for LED support on MT6323 PMIC Signed-off-by: Sean Wang <sean.wang@...iatek.com> --- .../devicetree/bindings/leds/leds-mt6323.txt | 63 ++++++++++++++++++++++ 1 file changed, 63 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..135c441 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-mt6323.txt @@ -0,0 +1,63 @@ +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" +- address-cells : Must be 1 +- size-cells : Must be 0 + +LED sub-node properties: +- reg : LED channel number (0..3) +- 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: + + pmic: mt6323 { + compatible = "mediatek,mt6323"; + + ... + + mt6323led: leds { + compatible = "mediatek,mt6323-led"; + #address-cells = <1>; + #size-cells = <0>; + + led@0 { + reg = <0>; + label = "LED0"; + linux,default-trigger = "timer"; + default-state = "on"; + }; + led@1 { + reg = <1>; + label = "LED1"; + default-state = "off"; + }; + led@2 { + reg = <2>; + label = "LED2"; + default-state = "on"; + }; + }; + }; -- 1.9.1
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