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Commit 03e09bc1 authored by Pramod Kumar's avatar Pramod Kumar Committed by Linus Walleij
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pinctrl: cygnus: Optional DT property to support pin mappings 



If GPIO controller's pins are muxed, pin-controller subsystem
need to be intimated by defining mapping between gpio and
pinmux controller. This patch adds required properties to
define this mapping via DT.

Signed-off-by: default avatarPramod Kumar <pramodku@broadcom.com>
Reviewed-by: default avatarRay Jui <rjui@broadcom.com>
Reviewed-by: default avatarScott Branden <sbranden@broadcom.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 10af309a

Documentation/devicetree/bindings/pinctrl/brcm,cygnus-gpio.txt

+9 −3
Original line number Diff line number Diff line
@@ -26,9 +26,13 @@ Optional properties: 
- interrupt-controller:

    Specifies that the node is an interrupt controller



- pinmux:

    Specifies the phandle to the IOMUX device, where pins can be individually

muxed to GPIO

- gpio-ranges:

    Specifies the mapping between gpio controller and pin-controllers pins.

    This requires 4 fields in cells defined as -

    1. Phandle of pin-controller.

    2. GPIO base pin offset.

    3  Pin-control base pin offset.

    4. number of gpio pins which are linearly mapped from pin base.



Supported generic PINCONF properties in child nodes:
@@ -78,6 +82,8 @@ Example: 
		gpio-controller;

		interrupts = <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>;

		interrupt-controller;

		gpio-ranges = <&pinctrl 0 42 1>,

				<&pinctrl 1 44 3>;

	};



	/*