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dt-bindings: pinctrl: Add DT bindings for apple, pinctrl

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The Apple GPIO controller is a simple combined pin and GPIO conroller
present on Apple ARM SoC platforms, including various iPhone and iPad
devices and the "Apple Silicon" Macs.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Link: https://lore.kernel.org/r/20210520171310.772-2-mark.kettenis@xs4all.nl
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Mark Kettenis 2021-05-20 19:13:06 +02:00 committed by Linus Walleij
parent f56b273cd8
commit 710071479c
3 changed files with 121 additions and 0 deletions
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106
Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml Normal file
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/apple,pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Apple GPIO controller
maintainers:
- Mark Kettenis <kettenis@openbsd.org>
description: |
The Apple GPIO controller is a simple combined pin and GPIO
controller present on Apple ARM SoC platforms, including various
iPhone and iPad devices and the "Apple Silicon" Macs.
properties:
compatible:
items:
- const: apple,t8103-pinctrl
- const: apple,pinctrl
reg:
maxItems: 1
clocks:
maxItems: 1
gpio-controller: true
'#gpio-cells':
const: 2
gpio-ranges:
maxItems: 1
interrupts:
description: One interrupt for each of the (up to 7) interrupt
groups supported by the controller sorted by interrupt group
number in ascending order.
minItems: 1
maxItems: 7
interrupt-controller: true
patternProperties:
'-pins$':
type: object
$ref: pinmux-node.yaml#
properties:
pinmux:
description:
Values are constructed from pin number and alternate function
configuration number using the APPLE_PINMUX() helper macro
defined in include/dt-bindings/pinctrl/apple.h.
required:
- pinmux
additionalProperties: false
required:
- compatible
- reg
- gpio-controller
- '#gpio-cells'
- gpio-ranges
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/apple-aic.h>
#include <dt-bindings/pinctrl/apple.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
pinctrl: pinctrl@23c100000 {
compatible = "apple,t8103-pinctrl", "apple,pinctrl";
reg = <0x2 0x3c100000 0x0 0x100000>;
clocks = <&gpio_clk>;
gpio-controller;
#gpio-cells = <2>;
gpio-ranges = <&pinctrl 0 0 212>;
interrupt-controller;
interrupt-parent = <&aic>;
interrupts = <AIC_IRQ 16 IRQ_TYPE_LEVEL_HIGH>,
<AIC_IRQ 17 IRQ_TYPE_LEVEL_HIGH>,
<AIC_IRQ 18 IRQ_TYPE_LEVEL_HIGH>,
<AIC_IRQ 19 IRQ_TYPE_LEVEL_HIGH>,
<AIC_IRQ 20 IRQ_TYPE_LEVEL_HIGH>,
<AIC_IRQ 21 IRQ_TYPE_LEVEL_HIGH>,
<AIC_IRQ 22 IRQ_TYPE_LEVEL_HIGH>;
pcie_pins: pcie-pins {
pinmux = <APPLE_PINMUX(150, 1)>,
<APPLE_PINMUX(151, 1)>,
<APPLE_PINMUX(32, 1)>;
};
};
};

2
MAINTAINERS
View file

@ -1655,9 +1655,11 @@ C: irc://chat.freenode.net/asahi-dev
T: git https://github.com/AsahiLinux/linux.git
F: Documentation/devicetree/bindings/arm/apple.yaml
F: Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml
F: arch/arm64/boot/dts/apple/
F: drivers/irqchip/irq-apple-aic.c
F: include/dt-bindings/interrupt-controller/apple-aic.h
F: include/dt-bindings/pinctrl/apple.h
ARM/ARTPEC MACHINE SUPPORT
M: Jesper Nilsson <jesper.nilsson@axis.com>

13
include/dt-bindings/pinctrl/apple.h Normal file
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/* SPDX-License-Identifier: GPL-2.0+ OR MIT */
/*
* This header provides constants for Apple pinctrl bindings.
*/
#ifndef _DT_BINDINGS_PINCTRL_APPLE_H
#define _DT_BINDINGS_PINCTRL_APPLE_H
#define APPLE_PINMUX(pin, func) ((pin) | ((func) << 16))
#define APPLE_PIN(pinmux) ((pinmux) & 0xffff)
#define APPLE_FUNC(pinmux) ((pinmux) >> 16)
#endif /* _DT_BINDINGS_PINCTRL_APPLE_H */