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Diffstat (limited to 'Documentation/devicetree/bindings/leds/pca963x.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/leds/pca963x.txt | 52 |
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diff --git a/Documentation/devicetree/bindings/leds/pca963x.txt b/Documentation/devicetree/bindings/leds/pca963x.txt new file mode 100644 index 0000000000..4eee414820 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/pca963x.txt @@ -0,0 +1,52 @@ +LEDs connected to pca9632, pca9633 or pca9634 + +Required properties: +- compatible : should be : "nxp,pca9632", "nxp,pca9633", "nxp,pca9634" or "nxp,pca9635" + +Optional properties: +- nxp,totem-pole : use totem pole (push-pull) instead of open-drain (pca9632 defaults + to open-drain, newer chips to totem pole) +- nxp,hw-blink : use hardware blinking instead of software blinking +- nxp,period-scale : In some configurations, the chip blinks faster than expected. + This parameter provides a scaling ratio (fixed point, decimal divided + by 1000) to compensate, e.g. 1300=1.3x and 750=0.75x. +- nxp,inverted-out: invert the polarity of the generated PWM + +Each led is represented as a sub-node of the nxp,pca963x device. + +LED sub-node properties: +- label : (optional) see Documentation/devicetree/bindings/leds/common.txt +- reg : number of LED line (could be from 0 to 3 in pca9632 or pca9633, + 0 to 7 in pca9634, or 0 to 15 in pca9635) +- linux,default-trigger : (optional) + see Documentation/devicetree/bindings/leds/common.txt + +Examples: + +pca9632: pca9632 { + compatible = "nxp,pca9632"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x62>; + + red@0 { + label = "red"; + reg = <0>; + linux,default-trigger = "none"; + }; + green@1 { + label = "green"; + reg = <1>; + linux,default-trigger = "none"; + }; + blue@2 { + label = "blue"; + reg = <2>; + linux,default-trigger = "none"; + }; + unused@3 { + label = "unused"; + reg = <3>; + linux,default-trigger = "none"; + }; +}; |