Based on kernel version 6.8
. Page generated on 2024-03-11 21:26 EST
.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | * NXP - pca955x LED driver The PCA955x family of chips are I2C LED blinkers whose pins not used to control LEDs can be used as general purpose I/Os. The GPIO pins can be input or output, and output pins can also be pulse-width controlled. Required properties: - compatible : should be one of : "nxp,pca9550" "nxp,pca9551" "nxp,pca9552" "ibm,pca9552" "nxp,pca9553" - #address-cells: must be 1 - #size-cells: must be 0 - reg: I2C slave address. depends on the model. Optional properties: - gpio-controller: allows pins to be used as GPIOs. - #gpio-cells: must be 2. - gpio-line-names: define the names of the GPIO lines LED sub-node properties: - reg : number of LED line. from 0 to 1 for the pca9550 from 0 to 7 for the pca9551 from 0 to 15 for the pca9552 from 0 to 3 for the pca9553 - type: (optional) either PCA955X_TYPE_NONE PCA955X_TYPE_LED PCA955X_TYPE_GPIO see dt-bindings/leds/leds-pca955x.h (default to LED) - label : (optional) see Documentation/devicetree/bindings/leds/common.txt - linux,default-trigger : (optional) see Documentation/devicetree/bindings/leds/common.txt Examples: pca9552: pca9552@60 { compatible = "nxp,pca9552"; #address-cells = <1>; #size-cells = <0>; reg = <0x60>; gpio-controller; #gpio-cells = <2>; gpio-line-names = "GPIO12", "GPIO13", "GPIO14", "GPIO15"; gpio@12 { reg = <12>; type = <PCA955X_TYPE_GPIO>; }; gpio@13 { reg = <13>; type = <PCA955X_TYPE_GPIO>; }; gpio@14 { reg = <14>; type = <PCA955X_TYPE_GPIO>; }; gpio@15 { reg = <15>; type = <PCA955X_TYPE_GPIO>; }; led@0 { label = "red:power"; linux,default-trigger = "default-on"; reg = <0>; type = <PCA955X_TYPE_LED>; }; led@1 { label = "green:power"; reg = <1>; type = <PCA955X_TYPE_LED>; }; led@2 { label = "pca9552:yellow"; reg = <2>; type = <PCA955X_TYPE_LED>; }; led@3 { label = "pca9552:white"; reg = <3>; type = <PCA955X_TYPE_LED>; }; }; |