xref: /linux/Documentation/devicetree/bindings/pinctrl/fsl,imx9-pinctrl.yaml (revision c8faf11cd192214e231626c3ee973a35d8fc33f2) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pinctrl/fsl,imx9-pinctrl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale IMX9 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
16allOf:
17  - $ref: pinctrl.yaml#
18
19properties:
20  compatible:
21    enum:
22      - fsl,imx91-iomuxc
23      - fsl,imx93-iomuxc
24
25  reg:
26    maxItems: 1
27
28# Client device subnode's properties
29patternProperties:
30  'grp$':
31    type: object
32    description:
33      Pinctrl node's client devices use subnodes for desired pin configuration.
34      Client device subnodes use below standard properties.
35
36    properties:
37      fsl,pins:
38        description:
39          each entry consists of 6 integers and represents the mux and config
40          setting for one pin. The first 5 integers <mux_reg conf_reg input_reg
41          mux_val input_val> are specified using a PIN_FUNC_ID macro, which can
42          be found in <arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h>. The last
43          integer CONFIG is the pad setting value like pull-up on this pin. Please
44          refer to i.MX8M Plus Reference Manual for 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 applied.
60
61
62    required:
63      - fsl,pins
64
65    additionalProperties: false
66
67required:
68  - compatible
69  - reg
70
71additionalProperties: false
72
73examples:
74  # Pinmux controller node
75  - |
76    iomuxc: pinctrl@443c0000 {
77        compatible = "fsl,imx93-iomuxc";
78        reg = <0x30330000 0x10000>;
79
80        pinctrl_uart3: uart3grp {
81            fsl,pins =
82                <0x48 0x1f8 0x41c 0x1 0x0	0x49>,
83                <0x4c 0x1fc 0x418 0x1 0x0	0x49>;
84        };
85    };
86
87...
88