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# 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
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 <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 */
};
};
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