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

Commit 9f7c7cee authored by Charles Keepax's avatar Charles Keepax Committed by Lee Jones
Browse files

mfd: wm831x: Add device tree binding document 



Add a device tree binding document for the wm831x series of PMICs.
Currently only support for the registering the device and the GPIOs are
actually implemented in the driver.

Signed-off-by: default avatarCharles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 9674a8dc

Documentation/devicetree/bindings/mfd/wm831x.txt

0 → 100644
+81 −0
Original line number Diff line number Diff line 
Cirrus Logic/Wolfson Microelectronics wm831x PMICs



System PMICs with a wide range of additional features.



Required properties:



  - compatible : One of the following chip-specific strings:

        "wlf,wm8310"

        "wlf,wm8311"

        "wlf,wm8312"

        "wlf,wm8320"

        "wlf,wm8321"

        "wlf,wm8325"

        "wlf,wm8326"



  - reg : I2C slave address when connected using I2C, chip select number

    when using SPI.



  - gpio-controller : Indicates this device is a GPIO controller.

  - #gpio-cells : Must be 2. The first cell is the pin number and the

    second cell is used to specify optional parameters (currently unused).



  - interrupts : The interrupt line the IRQ signal for the device is

    connected to.

  - interrupt-parent : The parent interrupt controller.



  - interrupt-controller : wm831x devices contain interrupt controllers and

    may provide interrupt services to other devices.

  - #interrupt-cells: Must be 2. The first cell is the IRQ number, and the

    second cell is the flags, encoded as the trigger masks from

    ../interrupt-controller/interrupts.txt



Optional sub-nodes:

  - regulators : Contains sub-nodes for each of the regulators supplied by

    the device. The regulators are bound using their names listed below:



    dcdc1 : DCDC1

    dcdc2 : DCDC2

    dcdc3 : DCDC3

    dcdc4 : DCDC3

    isink1 : ISINK1

    isink2 : ISINK2

    ldo1 : LDO1

    ldo2 : LDO2

    ldo3 : LDO3

    ldo4 : LDO4

    ldo5 : LDO5

    ldo7 : LDO7

    ldo11 : LDO11



    The bindings details of each regulator can be found in:

    ../regulator/regulator.txt



Example:



wm8310: pmic@36 {

	compatible = "wlf,wm8310";

	reg = <0x36>;



	gpio-controller;

	#gpio-cells = <2>;



	interrupts = <347>;

	interrupt-parent = <&gic>;



	interrupt-controller;

	#interrupt-cells = <2>;



	regulators {

		dcdc1: dcdc1 {

			regulator-name = "DCDC1";

			regulator-min-microvolt = <600000>;

			regulator-max-microvolt = <600000>;

		};

		ldo1: ldo1 {

			regulator-name = "LDO1";

			regulator-min-microvolt = <1700000>;

			regulator-max-microvolt = <1700000>;

		};

	};

};

MAINTAINERS

+1 −0
Original line number Diff line number Diff line
@@ -13600,6 +13600,7 @@ F: Documentation/hwmon/wm83?? 
F:	Documentation/devicetree/bindings/extcon/extcon-arizona.txt

F:	Documentation/devicetree/bindings/regulator/arizona-regulator.txt

F:	Documentation/devicetree/bindings/mfd/arizona.txt

F:	Documentation/devicetree/bindings/mfd/wm831x.txt

F:	arch/arm/mach-s3c64xx/mach-crag6410*

F:	drivers/clk/clk-wm83*.c

F:	drivers/extcon/extcon-arizona.c