# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/mediatek,mt6779-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MediaTek MT6779 Pin Controller
maintainers:
- Andy Teng <andy.teng@mediatek.com>
- Sean Wang <sean.wang@kernel.org>
description:
The MediaTek pin controller on MT6779 is used to control pin functions, pull
up/down resistance and drive strength options.
properties:
compatible:
enum:
- mediatek,mt6779-pinctrl
- mediatek,mt6797-pinctrl
reg:
description: Physical addresses for GPIO base(s) and EINT registers.
reg-names: true
gpio-controller: true
"#gpio-cells":
const: 2
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.
gpio-ranges:
minItems: 1
maxItems: 5
description:
GPIO valid number range.
interrupt-controller: true
interrupts:
maxItems: 1
description:
Specifies the summary IRQ.
"#interrupt-cells":
const: 2
required:
- compatible
- reg
- reg-names
- gpio-controller
- "#gpio-cells"
allOf:
- $ref: pinctrl.yaml#
- if:
properties:
compatible:
contains:
const: mediatek,mt6779-pinctrl
then:
properties:
reg:
minItems: 9
maxItems: 9
reg-names:
items:
- const: gpio
- const: iocfg_rm
- const: iocfg_br
- const: iocfg_lm
- const: iocfg_lb
- const: iocfg_rt
- const: iocfg_lt
- const: iocfg_tl
- const: eint
- if:
properties:
compatible:
contains:
const: mediatek,mt6797-pinctrl
then:
properties:
reg:
minItems: 5
maxItems: 5
reg-names:
items:
- const: gpio
- const: iocfgl
- const: iocfgb
- const: iocfgr
- const: iocfgt
- if:
properties:
reg-names:
contains:
const: eint
then:
required:
- interrupts
- interrupt-controller
- "#interrupt-cells"
patternProperties:
'-[0-9]*$':
type: object
additionalProperties: false
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.
$ref: /schemas/pinctrl/pincfg-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.
bias-disable: true
bias-pull-up: true
bias-pull-down: true
input-enable: true
input-disable: true
output-low: true
output-high: true
input-schmitt-enable: true
input-schmitt-disable: true
drive-strength:
enum: [2, 4, 8, 12, 16]
slew-rate:
enum: [0, 1]
mediatek,pull-up-adv:
description: |
Pull up settings for 2 pull resistors, R0 and R1. User can
configure those special pins. Valid arguments are described as
below:
0: (R1, R0) = (0, 0) which means R1 disabled and R0 disabled.
1: (R1, R0) = (0, 1) which means R1 disabled and R0 enabled.
2: (R1, R0) = (1, 0) which means R1 enabled and R0 disabled.
3: (R1, R0) = (1, 1) which means R1 enabled and R0 enabled.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1, 2, 3]
mediatek,pull-down-adv:
description: |
Pull down settings for 2 pull resistors, R0 and R1. User can
configure those special pins. Valid arguments are described as
below:
0: (R1, R0) = (0, 0) which means R1 disabled and R0 disabled.
1: (R1, R0) = (0, 1) which means R1 disabled and R0 enabled.
2: (R1, R0) = (1, 0) which means R1 enabled and R0 disabled.
3: (R1, R0) = (1, 1) which means R1 enabled and R0 enabled.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1, 2, 3]
required:
- pinmux
additionalProperties: false
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/pinctrl/mt6779-pinfunc.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
pio: pinctrl@10005000 {
compatible = "mediatek,mt6779-pinctrl";
reg = <0 0x10005000 0 0x1000>,
<0 0x11c20000 0 0x1000>,
<0 0x11d10000 0 0x1000>,
<0 0x11e20000 0 0x1000>,
<0 0x11e70000 0 0x1000>,
<0 0x11ea0000 0 0x1000>,
<0 0x11f20000 0 0x1000>,
<0 0x11f30000 0 0x1000>,
<0 0x1000b000 0 0x1000>;
reg-names = "gpio", "iocfg_rm",
"iocfg_br", "iocfg_lm",
"iocfg_lb", "iocfg_rt",
"iocfg_lt", "iocfg_tl",
"eint";
gpio-controller;
#gpio-cells = <2>;
gpio-ranges = <&pio 0 0 210>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <GIC_SPI 204 IRQ_TYPE_LEVEL_HIGH>;
mmc0_pins_default: mmc0-0 {
cmd-dat-pins {
pinmux = <PINMUX_GPIO168__FUNC_MSDC0_DAT0>,
<PINMUX_GPIO172__FUNC_MSDC0_DAT1>,
<PINMUX_GPIO169__FUNC_MSDC0_DAT2>,
<PINMUX_GPIO177__FUNC_MSDC0_DAT3>,
<PINMUX_GPIO170__FUNC_MSDC0_DAT4>,
<PINMUX_GPIO173__FUNC_MSDC0_DAT5>,
<PINMUX_GPIO171__FUNC_MSDC0_DAT6>,
<PINMUX_GPIO174__FUNC_MSDC0_DAT7>,
<PINMUX_GPIO167__FUNC_MSDC0_CMD>;
input-enable;
mediatek,pull-up-adv = <1>;
};
clk-pins {
pinmux = <PINMUX_GPIO176__FUNC_MSDC0_CLK>;
mediatek,pull-down-adv = <2>;
};
rst-pins {
pinmux = <PINMUX_GPIO178__FUNC_MSDC0_RSTB>;
mediatek,pull-up-adv = <0>;
};
};
};
mmc0 {
pinctrl-0 = <&mmc0_pins_default>;
pinctrl-names = "default";
};
};