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v0.7.0
v0.7.0
https://github.com/torvalds/linux
Tip revision: 3906fe9bb7f1a2c8667ae54e967dc8690824f4ea authored by Linus Torvalds on 25 October 2021, 18:30:31 UTC
Linux 5.15-rc7
Linux 5.15-rc7
Tip revision: 3906fe9
pinctrl-mt8195.yaml
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/pinctrl-mt8195.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Mediatek MT8195 Pin Controller
maintainers:
- Sean Wang <sean.wang@mediatek.com>
description: |
The Mediatek's Pin controller is used to control SoC pins.
properties:
compatible:
const: mediatek,mt8195-pinctrl
gpio-controller: true
'#gpio-cells':
description: |
Number of cells in GPIO specifier. Since the generic GPIO binding is used,
the amount of cells must be specified as 2. See the below
mentioned gpio binding representation for description of particular cells.
const: 2
gpio-ranges:
description: gpio valid number range.
maxItems: 1
reg:
description: |
Physical address base for gpio base registers. There are 8 GPIO
physical address base in mt8195.
maxItems: 8
reg-names:
description: |
Gpio base register names.
maxItems: 8
interrupt-controller: true
'#interrupt-cells':
const: 2
interrupts:
description: The interrupt outputs to sysirq.
maxItems: 1
#PIN CONFIGURATION NODES
patternProperties:
'-pins$':
type: object
description: |
A pinctrl node should contain at least one subnodes representing the
pinctrl groups available on the machine. Each subnode will list the
pins it needs, and how they should be configured, with regard to muxer
configuration, pullups, drive strength, input enable/disable and
input schmitt.
An example of using macro:
pincontroller {
/* GPIO0 set as multifunction GPIO0 */
gpio_pin {
pinmux = <PINMUX_GPIO0__FUNC_GPIO0>;
};
/* GPIO8 set as multifunction SDA0 */
i2c0_pin {
pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
};
};
$ref: "pinmux-node.yaml"
properties:
pinmux:
description: |
Integer array, represents gpio pin number and mux setting.
Supported pin number and mux varies for different SoCs, and are defined
as macros in dt-bindings/pinctrl/<soc>-pinfunc.h directly.
drive-strength:
enum: [2, 4, 6, 8, 10, 12, 14, 16]
bias-pull-down: true
bias-pull-up: true
bias-disable: true
output-high: true
output-low: true
input-enable: true
input-disable: true
input-schmitt-enable: true
input-schmitt-disable: true
required:
- pinmux
additionalProperties: false
required:
- compatible
- reg
- interrupts
- interrupt-controller
- '#interrupt-cells'
- gpio-controller
- '#gpio-cells'
- gpio-ranges
additionalProperties: false
examples:
- |
#include <dt-bindings/pinctrl/mt8195-pinfunc.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
pio: pinctrl@10005000 {
compatible = "mediatek,mt8195-pinctrl";
reg = <0x10005000 0x1000>,
<0x11d10000 0x1000>,
<0x11d30000 0x1000>,
<0x11d40000 0x1000>,
<0x11e20000 0x1000>,
<0x11eb0000 0x1000>,
<0x11f40000 0x1000>,
<0x1000b000 0x1000>;
reg-names = "iocfg0", "iocfg_bm", "iocfg_bl",
"iocfg_br", "iocfg_lm", "iocfg_rb",
"iocfg_tl", "eint";
gpio-controller;
#gpio-cells = <2>;
gpio-ranges = <&pio 0 0 144>;
interrupt-controller;
interrupts = <GIC_SPI 225 IRQ_TYPE_LEVEL_HIGH 0>;
#interrupt-cells = <2>;
pio-pins {
pinmux = <PINMUX_GPIO0__FUNC_GPIO0>;
output-low;
};
};