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Diffstat (limited to 'Documentation/devicetree/bindings/pinctrl/fsl,imx8m-pinctrl.yaml')
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1 files changed, 90 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,imx8m-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/fsl,imx8m-pinctrl.yaml new file mode 100644 index 0000000000..6068be11df --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/fsl,imx8m-pinctrl.yaml @@ -0,0 +1,90 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/fsl,imx8m-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale IMX8M IOMUX Controller + +maintainers: + - Peng Fan <peng.fan@nxp.com> + +description: + Please refer to fsl,imx-pinctrl.txt and pinctrl-bindings.txt in this directory + for common binding part and usage. + +properties: + compatible: + enum: + - fsl,imx8mm-iomuxc + - fsl,imx8mn-iomuxc + - fsl,imx8mp-iomuxc + - fsl,imx8mq-iomuxc + + reg: + maxItems: 1 + +# Client device subnode's properties +patternProperties: + 'grp$': + type: object + description: + Pinctrl node's client devices use subnodes for desired pin configuration. + Client device subnodes use below standard properties. + + properties: + fsl,pins: + description: + each entry consists of 6 integers and represents the mux and config + setting for one pin. The first 5 integers <mux_reg conf_reg input_reg + mux_val input_val> are specified using a PIN_FUNC_ID macro, which can + be found in <arch/arm64/boot/dts/freescale/imx8m[m,n,p,q]-pinfunc.h>. + The last integer CONFIG is the pad setting value like pull-up on this + pin. Please refer to i.MX8M Mini/Nano/Plus/Quad Reference Manual for + detailed CONFIG settings. + $ref: /schemas/types.yaml#/definitions/uint32-matrix + items: + items: + - description: | + "mux_reg" indicates the offset of mux register. + - description: | + "conf_reg" indicates the offset of pad configuration register. + - description: | + "input_reg" indicates the offset of select input register. + - description: | + "mux_val" indicates the mux value to be applied. + - description: | + "input_val" indicates the select input value to be applied. + - description: | + "pad_setting" indicates the pad configuration value to be + applied. + + required: + - fsl,pins + + additionalProperties: false + +allOf: + - $ref: pinctrl.yaml# + +required: + - compatible + - reg + +additionalProperties: false + +examples: + # Pinmux controller node + - | + iomuxc: pinctrl@30330000 { + compatible = "fsl,imx8mm-iomuxc"; + reg = <0x30330000 0x10000>; + + pinctrl_uart2: uart2grp { + fsl,pins = + <0x23C 0x4A4 0x4FC 0x0 0x0 0x140>, + <0x240 0x4A8 0x000 0x0 0x0 0x140>; + }; + }; + +... |