1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pinctrl/fsl,imx8mm-pinctrl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale IMX8MM IOMUX Controller
8
9maintainers:
10  - Anson Huang <Anson.Huang@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    const: fsl,imx8mm-iomuxc
19
20  reg:
21    maxItems: 1
22
23# Client device subnode's properties
24patternProperties:
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/imx8mm-pinfunc.h>. The last
38          integer CONFIG is the pad setting value like pull-up on this pin. Please
39          refer to i.MX8M Mini 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
61required:
62  - compatible
63  - reg
64
65additionalProperties: false
66
67examples:
68  # Pinmux controller node
69  - |
70    iomuxc: pinctrl@30330000 {
71        compatible = "fsl,imx8mm-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...
82