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Diffstat (limited to 'Documentation/devicetree/bindings/leds')
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diff --git a/Documentation/devicetree/bindings/leds/leds-pca995x.txt b/Documentation/devicetree/bindings/leds/leds-pca995x.txt new file mode 100644 index 000000000000..f4e31f4c4399 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-pca995x.txt @@ -0,0 +1,91 @@ +* NXP - pca995x LED driver + +The PCA995x family of chips are I2C-bus controlled 16-channel +constant current LED driver optimized for dimming and blinking +57 mA Red/Green/Blue/Amber (RGBA) LEDs. +Note that the top side markings of the pca995x chips are PCA9952 +and PCA9955. + +Required properties: +- compatible : should be one of : + "nxp,pca9955btw" + "nxp,pca995xtw" +- #address-cells: must be 1 +- #size-cells: must be 0 +- reg: I2C slave address. depends on the model and HW connections. + +Optional properties: +- reset-gpios: use a GPIO to control the reset line of the chip. + +LED sub-node properties: +- reg : number of LED line. + from 0 to 15 for the both pca9955btw & pca995xtw +- label : (optional) + see Documentation/devicetree/bindings/leds/common.txt +- linux,default-trigger : (optional) + see Documentation/devicetree/bindings/leds/common.txt + +Examples: + +/* TechNexion's voice HAT board */ +pca995tw: pca995xtw@60 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "nxp,pca995xtw"; + reset-gpios = <&gpio5 7 GPIO_ACTIVE_HIGH>; + reg = <0x60>; + + led0 { + label = "blue0"; + linux,default-trigger = "none"; + reg = <0>; + }; + + led1 { + label = "green0"; + linux,default-trigger = "none"; + reg = <1>; + }; + + led2 { + label = "red0"; + linux,default-trigger = "none"; + reg = <2>; + }; +}; + +/* NXP's 8MIC board */ +pca995btw: pca995btw@7 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "nxp,pca995btw"; + reg = <0x07>; + + led0 { + label = "green0"; + linux,default-trigger = "none"; + reg = <0>; + }; + + led1 { + label = "blue0"; + linux,default-trigger = "none"; + reg = <1>; + }; + + led2 { + label = "red0"; + linux,default-trigger = "none"; + reg = <2>; + }; + + led3 { + label = "green1"; + linux,default-trigger = "none"; + reg = <3>; + }; +}; + +For more information please check the information bellow: +https://www.nxp.com/docs/en/data-sheet/PCA9952_PCA9955.pdf +https://www.nxp.com/docs/en/data-sheet/PCA9955B.pdf
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