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-rw-r--r-- | Documentation/devicetree/bindings/pinctrl/renesas,rza2-pinctrl.yaml | 103 |
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diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rza2-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rza2-pinctrl.yaml new file mode 100644 index 000000000..d761fddc2 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rza2-pinctrl.yaml @@ -0,0 +1,103 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/renesas,rza2-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/A2 combined Pin and GPIO controller + +maintainers: + - Chris Brandt <chris.brandt@renesas.com> + - Geert Uytterhoeven <geert+renesas@glider.be> + +description: + The Renesas SoCs of the RZ/A2 series feature a combined Pin and GPIO + controller. + Pin multiplexing and GPIO configuration is performed on a per-pin basis. + Each port features up to 8 pins, each of them configurable for GPIO function + (port mode) or in alternate function mode. + Up to 8 different alternate function modes exist for each single pin. + +properties: + compatible: + const: "renesas,r7s9210-pinctrl" # RZ/A2M + + reg: + maxItems: 1 + + gpio-controller: true + + '#gpio-cells': + const: 2 + description: + The first cell contains the global GPIO port index, constructed using the + RZA2_PIN() helper macro in r7s9210-pinctrl.h. + E.g. "RZA2_PIN(PORT6, 0)" for P6_0. + + gpio-ranges: + maxItems: 1 + +patternProperties: + "^.*$": + if: + type: object + then: + allOf: + - $ref: pincfg-node.yaml# + - $ref: pinmux-node.yaml# + description: + The child nodes of the pin controller designate pins to be used for + specific peripheral functions or as GPIO. + + A pin multiplexing sub-node describes how to configure a set of + (or a single) pin in some desired alternate function mode. + The values for the pinmux properties are a combination of port name, + pin number and the desired function index. Use the RZA2_PINMUX macro + located in include/dt-bindings/pinctrl/r7s9210-pinctrl.h to easily + define these. + For assigning GPIO pins, use the macro RZA2_PIN also in + to express the desired port pin. + + properties: + phandle: true + + pinmux: + description: + Values are constructed from GPIO port number, pin number, and + alternate function configuration number using the RZA2_PINMUX() + helper macro in r7s9210-pinctrl.h. + + required: + - pinmux + + additionalProperties: false + +allOf: + - $ref: "pinctrl.yaml#" + +required: + - compatible + - reg + - gpio-controller + - '#gpio-cells' + - gpio-ranges + +additionalProperties: false + +examples: + - | + #include <dt-bindings/pinctrl/r7s9210-pinctrl.h> + pinctrl: pinctrl@fcffe000 { + compatible = "renesas,r7s9210-pinctrl"; + reg = <0xfcffe000 0x1000>; + + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&pinctrl 0 0 176>; + + /* Serial Console */ + scif4_pins: serial4 { + pinmux = <RZA2_PINMUX(PORT9, 0, 4)>, /* TxD4 */ + <RZA2_PINMUX(PORT9, 1, 4)>; /* RxD4 */ + }; + }; |