xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/pinctrl/fsl,imx7d-pinctrl.yaml

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/fsl,imx7d-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Freescale IMX7D IOMUX Controller

maintainers:
  - Dong Aisheng <aisheng.dong@nxp.com>

description:
  Please refer to fsl,imx-pinctrl.txt and pinctrl-bindings.txt in this directory
  for common binding part and usage.

properties:
  compatible:
    oneOf:
      - enum:
          - fsl,imx7d-iomuxc
          - fsl,imx7d-iomuxc-lpsr

  reg:
    maxItems: 1

  fsl,input-sel:
    description:
      phandle for main iomuxc controller which shares the input select
      register for daisy chain settings.
    $ref: /schemas/types.yaml#/definitions/phandle

# Client device subnode's properties
patternProperties:
  'grp$':
    type: object
    description:
      Pinctrl node's client devices use subnodes for desired pin configuration.
      Client device subnodes use below standard properties.

    properties:
      fsl,pins:
        description:
          each entry consists of 6 integers and represents the mux and config
          setting for one pin. The first 5 integers <mux_reg conf_reg input_reg
          mux_val input_val> are specified using a PIN_FUNC_ID macro, which can
          be found in <arch/arm/boot/dts/imx7d-pinfunc.h>. The last integer
          CONFIG is the pad setting value like pull-up on this pin. Please
          refer to i.MX7D Reference Manual for detailed CONFIG settings.
        $ref: /schemas/types.yaml#/definitions/uint32-matrix
        items:
          items:
            - description: |
                "mux_reg" indicates the offset of mux register.
            - description: |
                "conf_reg" indicates the offset of pad configuration register.
            - description: |
                "input_reg" indicates the offset of select input register.
            - description: |
                "mux_val" indicates the mux value to be applied.
            - description: |
                "input_val" indicates the select input value to be applied.
            - description: |
                "pad_setting" indicates the pad configuration value to be applied.

    required:
      - fsl,pins

    additionalProperties: false

allOf:
  - $ref: pinctrl.yaml#

required:
  - compatible
  - reg

if:
  properties:
    compatible:
      contains:
        enum:
          - fsl,imx7d-iomuxc-lpsr

then:
  required:
    - fsl,input-sel

additionalProperties: false

examples:
  - |
    iomuxc: pinctrl@30330000 {
      compatible = "fsl,imx7d-iomuxc";
      reg = <0x30330000 0x10000>;

      pinctrl_uart5: uart5grp {
        fsl,pins =
          <0x0160 0x03D0 0x0714 0x1 0x0	0x7e>,
          <0x0164 0x03D4 0x0000 0x1 0x0	0x76>;
      };
    };
  - |
    iomuxc_lpsr: pinctrl@302c0000 {
      compatible = "fsl,imx7d-iomuxc-lpsr";
      reg = <0x302c0000 0x10000>;
      fsl,input-sel = <&iomuxc>;

      pinctrl_gpio_lpsr: gpio1-grp {
          fsl,pins =
            <0x0008 0x0038 0x0000 0x0 0x0	0x59>,
            <0x000C 0x003C 0x0000 0x0 0x0	0x59>;
        };
    };