# 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 - Geert Uytterhoeven 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 additionalProperties: type: object 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: 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 examples: - | #include 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 = , /* TxD4 */ ; /* RxD4 */ }; };