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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---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 Controller8 9maintainers:10 - Peng Fan <peng.fan@nxp.com>11 12description:13 Please refer to fsl,imx-pinctrl.txt and pinctrl-bindings.txt in this directory14 for common binding part and usage.15 16properties:17 compatible:18 enum:19 - fsl,imx8mm-iomuxc20 - fsl,imx8mn-iomuxc21 - fsl,imx8mp-iomuxc22 - fsl,imx8mq-iomuxc23 24 reg:25 maxItems: 126 27# Client device subnode's properties28patternProperties:29 'grp$':30 type: object31 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 config39 setting for one pin. The first 5 integers <mux_reg conf_reg input_reg40 mux_val input_val> are specified using a PIN_FUNC_ID macro, which can41 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 this43 pin. Please refer to i.MX8M Mini/Nano/Plus/Quad Reference Manual for44 detailed CONFIG settings.45 $ref: /schemas/types.yaml#/definitions/uint32-matrix46 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 be60 applied.61 62 required:63 - fsl,pins64 65 additionalProperties: false66 67allOf:68 - $ref: pinctrl.yaml#69 70required:71 - compatible72 - reg73 74additionalProperties: false75 76examples:77 # Pinmux controller node78 - |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