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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/leds/leds-pca955x.txt | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/leds/leds-pca955x.txt')
-rw-r--r-- | Documentation/devicetree/bindings/leds/leds-pca955x.txt | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-pca955x.txt b/Documentation/devicetree/bindings/leds/leds-pca955x.txt new file mode 100644 index 000000000..817f460f3 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-pca955x.txt @@ -0,0 +1,89 @@ +* 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>; + }; +}; |