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Diffstat (limited to 'Documentation/devicetree/bindings/pinctrl/pinctrl-single.yaml')
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diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.yaml b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.yaml new file mode 100644 index 0000000000..45a307d3ce --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.yaml @@ -0,0 +1,207 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/pinctrl-single.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Generic Pin Controller with a Single Register for One or More Pins + +maintainers: + - Tony Lindgren <tony@atomide.com> + +description: + Some pin controller devices use a single register for one or more pins. The + range of pin control registers can vary from one to many for each controller + instance. Some SoCs from Altera, Broadcom, HiSilicon, Ralink, and TI have this + kind of pin controller instances. + +properties: + compatible: + oneOf: + - enum: + - pinctrl-single + - pinconf-single + - items: + - enum: + - ti,am437-padconf + - ti,am654-padconf + - ti,dra7-padconf + - ti,omap2420-padconf + - ti,omap2430-padconf + - ti,omap3-padconf + - ti,omap4-padconf + - ti,omap5-padconf + - const: pinctrl-single + + reg: + maxItems: 1 + + interrupt-controller: true + + '#interrupt-cells': + const: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + '#pinctrl-cells': + description: + Number of cells. Usually 2, consisting of register offset, pin configuration + value, and pinmux mode. Some controllers may use 1 for just offset and value. + enum: [ 1, 2 ] + + pinctrl-single,bit-per-mux: + description: Optional flag to indicate register controls more than one pin + type: boolean + + pinctrl-single,function-mask: + description: Mask of the allowed register bits + $ref: /schemas/types.yaml#/definitions/uint32 + + pinctrl-single,function-off: + description: Optional function off mode for disabled state + $ref: /schemas/types.yaml#/definitions/uint32 + + pinctrl-single,register-width: + description: Width of pin specific bits in the register + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [ 8, 16, 32 ] + + pinctrl-single,gpio-range: + description: Optional list of pin base, nr pins & gpio function + $ref: /schemas/types.yaml#/definitions/phandle-array + items: + - items: + - description: phandle of a gpio-range node + - description: pin base + - description: number of pins + - description: gpio function + + '#gpio-range-cells': + description: No longer needed, may exist in older files for gpio-ranges + deprecated: true + const: 3 + + gpio-range: + description: Optional node for gpio range cells + type: object + additionalProperties: false + properties: + '#pinctrl-single,gpio-range-cells': + description: Number of gpio range cells + const: 3 + $ref: /schemas/types.yaml#/definitions/uint32 + +patternProperties: + '-pins(-[0-9]+)?$|-pin$': + description: + Pin group node name using naming ending in -pins followed by an optional + instance number + type: object + additionalProperties: false + + properties: + pinctrl-single,pins: + description: + Array of pins as described in pinmux-node.yaml for pinctrl-pin-array + $ref: /schemas/types.yaml#/definitions/uint32-array + + pinctrl-single,bits: + description: Register bit configuration for pinctrl-single,bit-per-mux + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - description: register offset + - description: value + - description: pin bitmask in the register + + pinctrl-single,bias-pullup: + description: Optional bias pull up configuration + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - description: input + - description: enabled pull up bits + - description: disabled pull up bits + - description: bias pull up mask + + pinctrl-single,bias-pulldown: + description: Optional bias pull down configuration + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - description: input + - description: enabled pull down bits + - description: disabled pull down bits + - description: bias pull down mask + + pinctrl-single,drive-strength: + description: Optional drive strength configuration + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - description: drive strength current + - description: drive strength mask + + pinctrl-single,input-schmitt: + description: Optional input schmitt configuration + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - description: input + - description: enable bits + - description: disable bits + - description: input schmitt mask + + pinctrl-single,low-power-mode: + description: Optional low power mode configuration + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - description: low power mode value + - description: low power mode mask + + pinctrl-single,slew-rate: + description: Optional slew rate configuration + $ref: /schemas/types.yaml#/definitions/uint32-array + items: + - description: slew rate + - description: slew rate mask + +allOf: + - $ref: pinctrl.yaml# + +required: + - compatible + - reg + - pinctrl-single,register-width + +additionalProperties: false + +examples: + - | + soc { + #address-cells = <1>; + #size-cells = <1>; + + pinmux@4a100040 { + compatible = "pinctrl-single"; + reg = <0x4a100040 0x0196>; + #address-cells = <1>; + #size-cells = <0>; + #pinctrl-cells = <2>; + #interrupt-cells = <1>; + interrupt-controller; + pinctrl-single,register-width = <16>; + pinctrl-single,function-mask = <0xffff>; + pinctrl-single,gpio-range = <&range 0 3 0>; + range: gpio-range { + #pinctrl-single,gpio-range-cells = <3>; + }; + + uart2-pins { + pinctrl-single,pins = + <0xd8 0x118>, + <0xda 0>, + <0xdc 0x118>, + <0xde 0>; + }; + }; + }; |