[v2 2/3] dt-bindings: pinctrl: Add cix,sky1-pinctrl

[Rob Herring]

On Fri, Sep 12, 2025 at 02:06:49PM +0800, Gary Yang wrote:
> The pin-controller is used to control the Soc pins.
> There are two pin-controllers on Cix Sky1 platform.
> One is used under S0 state, the other is used under
> S5 state.

Wrap lines at 72 chars.

> 
> Signed-off-by: Gary Yang <gary.yang at cixtech.com>
> ---
>  .../bindings/pinctrl/cix,sky1-pinctrl.yaml    | 85 +++++++++++++++++++
>  1 file changed, 85 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/cix,sky1-pinctrl.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/cix,sky1-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/cix,sky1-pinctrl.yaml
> new file mode 100644
> index 000000000000..c4a127fd8330
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/cix,sky1-pinctrl.yaml
> @@ -0,0 +1,85 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/cix,sky1-pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cix Sky1 Pin Controller
> +
> +maintainers:
> +  - Gary Yang <gary.yang at cixtech.com>
> +
> +description:
> +  The pin-controller is used to control Soc pins. There are two pin-controllers
> +  on Cix Sky1 platform. one is used under S0 state, the other one is used under
> +  S5 state.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - cix,sky1-iomuxc
> +      - cix,sky1-iomuxc-s5
> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +# Client device subnode's properties
> +patternProperties:
> +  'pins$':
> +    type: object
> +    additionalProperties: false
> +    patternProperties:
> +      '(^pins|pins?$)':
> +        type: object
> +        additionalProperties: false
> +        description:
> +          A pinctrl node should contain at least one subnodes representing the
> +          pinctrl groups available on the machine. Each subnode will list the
> +          pins it needs, and how they should be configured, with regard to muxer
> +          configuration, pullups, and drive strength.
> +        $ref: /schemas/pinctrl/pincfg-node.yaml
> +
> +        properties:
> +          pinmux:
> +            description:
> +              Integer array, represents gpio pin number and mux setting.
> +              Supported pin number and mux varies for different SoCs, and are
> +              defined as macros in arch/arm64/boot/dts/cix/sky1-pinfunc.h directly.
> +
> +          bias-disable: true
> +
> +          bias-pull-up: true
> +
> +          bias-pull-down: true
> +
> +          drive-strength:
> +            description:
> +              Can support 15 levels, from DS_LEVEL1 to DS_LEVEL15.
> +              See arch/arm64/boot/dts/cix/sky1-pinfunc.h for valid arguments.

Constraints on the values?

> +
> +        required:
> +          - pinmux
> +
> +additionalProperties: false
> +
> +examples:
> +  # Pinmux controller node
> +  - |
> +    #define CIX_PAD_GPIO012_FUNC_GPIO012 (11 << 8 | 0x0)
> +    #define DS_LEVEL4 (4)
> +    iomuxc: pinctrl at 4170000 {
> +        compatible = "cix,sky1-iomuxc";
> +        reg = <0x4170000 0x1000>;
> +
> +        wifi_vbat_gpio: wifi-vbat-gpio-pins {
> +            pins-wifi-vbat-gpio {
> +                pinmux = <CIX_PAD_GPIO012_FUNC_GPIO012>;
> +                bias-pull-up;
> +                drive-strength = <DS_LEVEL4>;
> +           };
> +        };
> +    };
> -- 
> 2.49.0
>