Documentation/devicetree/bindings/pinctrl/fsl,imx8mn-pinctrl.yaml

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/pinctrl/fsl,imx8mn-pinctrl.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Freescale IMX8MN IOMUX Controller
   8
   9 maintainers:
  10   - Anson Huang <Anson.Huang@nxp.com>
  11
  12 description:
  13   Please refer to fsl,imx-pinctrl.txt and pinctrl-bindings.txt in this directory
  14   for common binding part and usage.
  15
  16 properties:
  17   compatible:
  18     const: fsl,imx8mn-iomuxc
  19
  20   reg:
  21     maxItems: 1
  22
  23 # Client device subnode's properties
  24 patternProperties:
  25   'grp$':
  26     type: object
  27     description:
  28       Pinctrl node's client devices use subnodes for desired pin configuration.
  29       Client device subnodes use below standard properties.
  30
  31     properties:
  32       fsl,pins:
  33         description:
  34           each entry consists of 6 integers and represents the mux and config
  35           setting for one pin. The first 5 integers <mux_reg conf_reg input_reg
  36           mux_val input_val> are specified using a PIN_FUNC_ID macro, which can
  37           be found in <arch/arm64/boot/dts/freescale/imx8mn-pinfunc.h>. The last
  38           integer CONFIG is the pad setting value like pull-up on this pin. Please
  39           refer to i.MX8M Nano Reference Manual for detailed CONFIG settings.
  40         $ref: /schemas/types.yaml#/definitions/uint32-matrix
  41         items:
  42           items:
  43             - description: |
  44                 "mux_reg" indicates the offset of mux register.
  45             - description: |
  46                 "conf_reg" indicates the offset of pad configuration register.
  47             - description: |
  48                 "input_reg" indicates the offset of select input register.
  49             - description: |
  50                 "mux_val" indicates the mux value to be applied.
  51             - description: |
  52                 "input_val" indicates the select input value to be applied.
  53             - description: |
  54                 "pad_setting" indicates the pad configuration value to be applied.
  55
  56     required:
  57       - fsl,pins
  58
  59     additionalProperties: false
  60
  61 required:
  62   - compatible
  63   - reg
  64
  65 additionalProperties: false
  66
  67 examples:
  68   # Pinmux controller node
  69   - |
  70     iomuxc: pinctrl@30330000 {
  71         compatible = "fsl,imx8mn-iomuxc";
  72         reg = <0x30330000 0x10000>;
  73
  74         pinctrl_uart2: uart2grp {
  75             fsl,pins =
  76                 <0x23C 0x4A4 0x4FC 0x0 0x0      0x140>,
  77                 <0x240 0x4A8 0x000 0x0 0x0      0x140>;
  78         };
  79     };
  80
  81 ...