xref: /linux/Documentation/devicetree/bindings/pinctrl/fsl,imx8ulp-pinctrl.yaml (revision 52990390f91c1c39ca742fc8f390b29891d95127) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pinctrl/fsl,imx8ulp-pinctrl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale IMX8ULP IOMUX Controller
8
9maintainers:
10  - Jacky Bai <ping.bai@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,imx8ulp-iomuxc1
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 5 integers and represents the mux and config
35          setting for one pin. The first 4 integers <mux_config_reg input_reg
36          mux_mode input_val> are specified using a PIN_FUNC_ID macro, which can
37          be found in <arch/arm64/boot/dts/freescale/imx8ulp-pinfunc.h>. The last
38          integer CONFIG is the pad setting value like pull-up on this pin. Please
39          refer to i.MX8ULP Reference Manual for detailed CONFIG settings.
40        $ref: /schemas/types.yaml#/definitions/uint32-matrix
41        items:
42          items:
43            - description: |
44                "mux_config_reg" indicates the offset of mux register.
45            - description: |
46                "input_reg" indicates the offset of select input register.
47            - description: |
48                "mux_mode" indicates the mux value to be applied.
49            - description: |
50                "input_val" indicates the select input value to be applied.
51            - description: |
52                "pad_setting" indicates the pad configuration value to be applied.
53
54    required:
55      - fsl,pins
56
57    additionalProperties: false
58
59allOf:
60  - $ref: pinctrl.yaml#
61
62required:
63  - compatible
64  - reg
65
66additionalProperties: false
67
68examples:
69  # Pinmux controller node
70  - |
71    iomuxc: pinctrl@298c0000 {
72        compatible = "fsl,imx8ulp-iomuxc1";
73        reg = <0x298c0000 0x10000>;
74
75        pinctrl_lpuart5: lpuart5grp {
76            fsl,pins =
77                <0x0138 0x08F0 0x4 0x3	0x3>,
78                <0x013C 0x08EC 0x4 0x3	0x3>;
79        };
80    };
81
82...
83