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60 lines
1.6 KiB
60 lines
1.6 KiB
Device Tree Bindings for LED support on MT6323 PMIC |
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MT6323 LED controller is subfunction provided by MT6323 PMIC, so the LED |
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controllers are defined as the subnode of the function node provided by MT6323 |
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PMIC controller that is being defined as one kind of Muti-Function Device (MFD) |
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using shared bus called PMIC wrapper for each subfunction to access remote |
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MT6323 PMIC hardware. |
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For MT6323 MFD bindings see: |
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Documentation/devicetree/bindings/mfd/mt6397.txt |
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For MediaTek PMIC wrapper bindings see: |
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Documentation/devicetree/bindings/soc/mediatek/pwrap.txt |
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Required properties: |
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- compatible : Must be "mediatek,mt6323-led" |
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- address-cells : Must be 1 |
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- size-cells : Must be 0 |
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Each led is represented as a child node of the mediatek,mt6323-led that |
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describes the initial behavior for each LED physically and currently only four |
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LED child nodes can be supported. |
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Required properties for the LED child node: |
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- reg : LED channel number (0..3) |
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Optional properties for the LED child node: |
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- label : See Documentation/devicetree/bindings/leds/common.txt |
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- linux,default-trigger : See Documentation/devicetree/bindings/leds/common.txt |
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- default-state: See Documentation/devicetree/bindings/leds/common.txt |
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Example: |
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mt6323: pmic { |
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compatible = "mediatek,mt6323"; |
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... |
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mt6323led: leds { |
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compatible = "mediatek,mt6323-led"; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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led@0 { |
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reg = <0>; |
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label = "LED0"; |
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linux,default-trigger = "timer"; |
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default-state = "on"; |
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}; |
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led@1 { |
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reg = <1>; |
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label = "LED1"; |
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default-state = "off"; |
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}; |
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led@2 { |
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reg = <2>; |
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label = "LED2"; |
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default-state = "on"; |
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}; |
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}; |
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};
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