On Fri, Mar 02, 2018 at 09:20:40AM +0530, Manivannan Sadhasivam wrote:
> Add gpio nodes for Actions Semi S900 SoC.
>
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
> ---
> .../devicetree/bindings/gpio/actions,owl-gpio.txt | 95 ++++++++++++++++++++++
> 1 file changed, 95 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt
>
> diff --git a/Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt b/Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt
> new file mode 100644
> index 000000000000..d2939ca6cfaf
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/actions,owl-gpio.txt
> @@ -0,0 +1,95 @@
> +* Actions Semi OWL GPIO controller bindings
> +
> +The GPIOs are organized as individual banks/ports with variable number
> +of GPIOs. Each bank is represented as an individual GPIO controller.
> +
> +Required properties:
> +- compatible : Should be "actions,s900-gpio"
> +- reg : Address and range of the GPIO controller registers.
> +- gpio-controller : Marks the device node as a GPIO controller.
> +- #gpio-cells : Should be <2>. The first cell is the gpio number
> + and the second cell is used to specify optional
> + parameters.
> +- interrupt-controller : Marks the device node as an interrupt controller.
> +- #interrupt-cells : Specifies the number of cells needed to encode an
> + interrupt. Shall be set to 2. The first cell
> + defines the interrupt number, the second encodes
> + the trigger flags described in
> + bindings/interrupt-controller/interrupts.txt
> +
> +Optional properties:
> +- gpio-ranges : Mapping between GPIO and pinctrl
> +
> +Note: Each GPIO port should have an alias correctly numbered in "aliases"
> +node.
Why? Please don't use aliases for gpios.
> +
> +Examples:
> +
> +aliases {
> + gpio0 = &gpioa;
> + gpio1 = &gpiob;
> + gpio2 = &gpioc;
> + gpio3 = &gpiod;
> + gpio4 = &gpioe;
> + gpio5 = &gpiof;
> +};
> +
> + gpioa: gpioa@e01b0000 {
Use generic node names (gpio).
> + compatible = "actions,s900-gpio";
> + reg = <0x0 0xe01b0000 0x0 0x1000>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + gpio-ranges = <&pinctrl 0 0 32>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> +
> + gpiob: gpiob@e01b0000 {
Ah, but your are duplicating addresses here which you shouldn't do
either. These should be all one node if you can avoid overlapping.
> + compatible = "actions,s900-gpio";
> + reg = <0x0 0xe01b0000 0x0 0x1000>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + gpio-ranges = <&pinctrl 0 32 32>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> +
> + gpioc: gpioc@e01b0000 {
> + compatible = "actions,s900-gpio";
> + reg = <0x0 0xe01b0000 0x0 0x1000>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + gpio-ranges = <&pinctrl 0 64 12>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> +
> + gpiod: gpiod@e01b0000 {
> + compatible = "actions,s900-gpio";
> + reg = <0x0 0xe01b0000 0x0 0x1000>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + gpio-ranges = <&pinctrl 0 76 30>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> +
> + gpioe: gpioe@e01b0000 {
> + compatible = "actions,s900-gpio";
> + reg = <0x0 0xe01b0000 0x0 0x1000>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + gpio-ranges = <&pinctrl 0 106 32>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> +
> + gpiof: gpiof@e01b0000 {
> + compatible = "actions,s900-gpio";
> + reg = <0x0 0xe01b0000 0x0 0x1000>;
> + gpio-controller;
> + #gpio-cells = <2>;
> + gpio-ranges = <&pinctrl 0 138 8>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> --
> 2.14.1
>
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