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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/nuvoton,wpcm450-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Nuvoton WPCM450 pin control and GPIO
maintainers:
- Jonathan Neuschäfer <j.neuschaefer@gmx.net>
properties:
compatible:
const: nuvoton,wpcm450-pinctrl
reg:
maxItems: 1
'#address-cells':
const: 1
'#size-cells':
const: 0
patternProperties:
# There are three kinds of subnodes:
# 1. a GPIO controller node for each GPIO bank
# 2. a pinmux node configures pin muxing for a group of pins (e.g. rmii2)
# 3. a pinconf node configures properties of a single pin
"^gpio@[0-7]$":
type: object
description:
Eight GPIO banks (gpio@0 to gpio@7), that each contain between 14 and 18
GPIOs. Some GPIOs support interrupts.
properties:
reg:
minimum: 0
maximum: 7
gpio-controller: true
"#gpio-cells":
const: 2
interrupt-controller: true
"#interrupt-cells":
const: 2
interrupts:
maxItems: 3
description:
The interrupts associated with this GPIO bank
required:
- reg
- gpio-controller
- '#gpio-cells'
"^mux-":
$ref: pinmux-node.yaml#
properties:
groups:
description:
One or more groups of pins to mux to a certain function
items:
enum: [ smb3, smb4, smb5, scs1, scs2, scs3, smb0, smb1, smb2, bsp,
hsp1, hsp2, r1err, r1md, rmii2, r2err, r2md, kbcc, dvo,
clko, smi, uinc, gspi, mben, xcs2, xcs1, sdio, sspi, fi0,
fi1, fi2, fi3, fi4, fi5, fi6, fi7, fi8, fi9, fi10, fi11,
fi12, fi13, fi14, fi15, pwm0, pwm1, pwm2, pwm3, pwm4, pwm5,
pwm6, pwm7, hg0, hg1, hg2, hg3, hg4, hg5, hg6, hg7 ]
function:
description:
The function that a group of pins is muxed to
enum: [ smb3, smb4, smb5, scs1, scs2, scs3, smb0, smb1, smb2, bsp,
hsp1, hsp2, r1err, r1md, rmii2, r2err, r2md, kbcc, dvo0,
dvo1, dvo2, dvo3, dvo4, dvo5, dvo6, dvo7, clko, smi, uinc,
gspi, mben, xcs2, xcs1, sdio, sspi, fi0, fi1, fi2, fi3, fi4,
fi5, fi6, fi7, fi8, fi9, fi10, fi11, fi12, fi13, fi14, fi15,
pwm0, pwm1, pwm2, pwm3, pwm4, pwm5, pwm6, pwm7, hg0, hg1,
hg2, hg3, hg4, hg5, hg6, hg7, gpio ]
dependencies:
groups: [ function ]
function: [ groups ]
additionalProperties: false
"^cfg-":
$ref: pincfg-node.yaml#
properties:
pins:
description:
A list of pins to configure in certain ways, such as enabling
debouncing
items:
pattern: "^gpio1?[0-9]{1,2}$"
input-debounce: true
additionalProperties: false
required:
- compatible
- reg
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
pinctrl: pinctrl@b8003000 {
compatible = "nuvoton,wpcm450-pinctrl";
reg = <0xb8003000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
gpio0: gpio@0 {
reg = <0>;
gpio-controller;
#gpio-cells = <2>;
interrupts = <2 IRQ_TYPE_LEVEL_HIGH>,
<3 IRQ_TYPE_LEVEL_HIGH>,
<4 IRQ_TYPE_LEVEL_HIGH>;
};
mux-rmii2 {
groups = "rmii2";
function = "rmii2";
};
pinmux_uid: mux-uid {
groups = "gspi", "sspi";
function = "gpio";
};
pinctrl_uid: cfg-uid {
pins = "gpio14";
input-debounce = <1>;
};
};
gpio-keys {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uid>, <&pinmux_uid>;
button-uid {
label = "UID";
linux,code = <102>;
gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
};
};
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