xref: /linux/Documentation/devicetree/bindings/pinctrl/fsl,imx8m-pinctrl.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pinctrl/fsl,imx8m-pinctrl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale IMX8M IOMUX Controller
8
9maintainers:
10  - Peng Fan <peng.fan@nxp.com>
11
12description:
13  Please refer to fsl,imx-pinctrl.txt and pinctrl-bindings.txt in this directory
14  for common binding part and usage.
15
16properties:
17  compatible:
18    enum:
19      - fsl,imx8mm-iomuxc
20      - fsl,imx8mn-iomuxc
21      - fsl,imx8mp-iomuxc
22      - fsl,imx8mq-iomuxc
23
24  reg:
25    maxItems: 1
26
27# Client device subnode's properties
28patternProperties:
29  'grp$':
30    type: object
31    description:
32      Pinctrl node's client devices use subnodes for desired pin configuration.
33      Client device subnodes use below standard properties.
34
35    properties:
36      fsl,pins:
37        description:
38          each entry consists of 6 integers and represents the mux and config
39          setting for one pin. The first 5 integers <mux_reg conf_reg input_reg
40          mux_val input_val> are specified using a PIN_FUNC_ID macro, which can
41          be found in <arch/arm64/boot/dts/freescale/imx8m[m,n,p,q]-pinfunc.h>.
42          The last integer CONFIG is the pad setting value like pull-up on this
43          pin. Please refer to i.MX8M Mini/Nano/Plus/Quad Reference Manual for
44          detailed CONFIG settings.
45        $ref: /schemas/types.yaml#/definitions/uint32-matrix
46        items:
47          items:
48            - description: |
49                "mux_reg" indicates the offset of mux register.
50            - description: |
51                "conf_reg" indicates the offset of pad configuration register.
52            - description: |
53                "input_reg" indicates the offset of select input register.
54            - description: |
55                "mux_val" indicates the mux value to be applied.
56            - description: |
57                "input_val" indicates the select input value to be applied.
58            - description: |
59                "pad_setting" indicates the pad configuration value to be
60                applied.
61
62    required:
63      - fsl,pins
64
65    additionalProperties: false
66
67allOf:
68  - $ref: pinctrl.yaml#
69
70required:
71  - compatible
72  - reg
73
74additionalProperties: false
75
76examples:
77  # Pinmux controller node
78  - |
79    iomuxc: pinctrl@30330000 {
80        compatible = "fsl,imx8mm-iomuxc";
81        reg = <0x30330000 0x10000>;
82
83        pinctrl_uart2: uart2grp {
84            fsl,pins =
85                <0x23C 0x4A4 0x4FC 0x0 0x0	0x140>,
86                <0x240 0x4A8 0x000 0x0 0x0	0x140>;
87        };
88    };
89
90...
91