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