Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 15201b5d authored by Cédric Le Goater's avatar Cédric Le Goater Committed by Jacek Anaszewski
Browse files

dt-bindings: leds: add pca955x 



This adds the devicetree bindings for the PCA955x I2C LED blinkers.

Signed-off-by: default avatarCédric Le Goater <clg@kaod.org>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Signed-off-by: default avatarJacek Anaszewski <jacek.anaszewski@gmail.com>
parent 561099a1

Documentation/devicetree/bindings/leds/leds-pca955x.txt

0 → 100644
+88 −0
Original line number Diff line number Diff line 
* 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"

	"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

	PCA9532_TYPE_NONE

	PCA9532_TYPE_LED

	PCA9532_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>;

	};

};