# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/mediatek,mt7986-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MediaTek MT7986 Pin Controller
maintainers:
- Sean Wang <sean.wang@kernel.org>
description:
The MediaTek's MT7986 Pin controller is used to control SoC pins.
properties:
compatible:
enum:
- mediatek,mt7986a-pinctrl
- mediatek,mt7986b-pinctrl
reg:
minItems: 8
maxItems: 8
reg-names:
items:
- const: gpio
- const: iocfg_rt
- const: iocfg_rb
- const: iocfg_lt
- const: iocfg_lb
- const: iocfg_tr
- const: iocfg_tl
- const: eint
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
"#interrupt-cells":
const: 2
allOf:
- $ref: pinctrl.yaml#
required:
- compatible
- reg
- reg-names
- gpio-controller
- "#gpio-cells"
patternProperties:
'-pins$':
type: object
additionalProperties: false
patternProperties:
'^.*mux.*$':
type: object
additionalProperties: false
description: |
pinmux configuration nodes.
The following table shows the effective values of "group", "function"
properties and chip pinout pins
groups function pins (in pin#)
---------------------------------------------------------------------
"watchdog" "watchdog" 0
"wifi_led" "led" 1, 2
"i2c" "i2c" 3, 4
"uart1_0" "uart" 7, 8, 9, 10
"uart1_rx_tx" "uart" 42, 43
"uart1_cts_rts" "uart" 44, 45
"pcie_clk" "pcie" 9
"pcie_wake" "pcie" 10
"spi1_0" "spi" 11, 12, 13, 14
"pwm1_1" "pwm" 20,
"pwm0" "pwm" 21,
"pwm1_0" "pwm" 22,
"snfi" "flash" 23, 24, 25, 26, 27, 28
"spi1_2" "spi" 29, 30, 31, 32
"emmc_45" "emmc" 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
32
"spi1_1" "spi" 23, 24, 25, 26
"uart1_2_rx_tx" "uart" 29, 30
"uart1_2_cts_rts" "uart" 31, 32
"uart1_1" "uart" 23, 24, 25, 26
"uart2_0_rx_tx" "uart" 29, 30
"uart2_0_cts_rts" "uart" 31, 32
"spi0" "spi" 33, 34, 35, 36
"spi0_wp_hold" "spi" 37, 38
"uart1_3_rx_tx" "uart" 35, 36
"uart1_3_cts_rts" "uart" 37, 38
"uart2_1" "uart" 33, 34, 35, 36
"spi1_3" "spi" 33, 34, 35, 36
"uart0" "uart" 39, 40
"pcie_pereset" "pcie" 41
"uart1" "uart" 42, 43, 44, 45
"uart2" "uart" 46, 47, 48, 49
"emmc_51" "emmc" 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
60, 61
"pcm" "audio" 62, 63, 64, 65
"i2s" "audio" 62, 63, 64, 65
"switch_int" "eth" 66
"mdc_mdio" "eth" 67
"wf_2g" "wifi" 74, 75, 76, 77, 78, 79, 80, 81, 82, 83
"wf_5g" "wifi" 91, 92, 93, 94, 95, 96, 97, 98, 99, 100
"wf_dbdc" "wifi" 74, 75, 76, 77, 78, 79, 80, 81, 82, 83,
84, 85
$ref: /schemas/pinctrl/pinmux-node.yaml
properties:
function:
description:
A string containing the name of the function to mux to the group.
There is no "audio", "pcie" functions on mt7986b, you can only use
those functions on mt7986a.
enum: [audio, emmc, eth, i2c, led, flash, pcie, pwm, spi, uart,
watchdog, wifi]
groups:
description:
An array of strings. Each string contains the name of a group.
There is no "pcie_pereset", "uart1", "uart2" "emmc_51", "pcm", and
"i2s" groups on mt7986b, you can only use those groups on mt7986a.
required:
- function
- groups
allOf:
- if:
properties:
function:
const: audio
then:
properties:
groups:
enum: [pcm, i2s]
- if:
properties:
function:
const: emmc
then:
properties:
groups:
enum: [emmc_45, emmc_51]
- if:
properties:
function:
const: eth
then:
properties:
groups:
enum: [switch_int, mdc_mdio]
- if:
properties:
function:
const: i2c
then:
properties:
groups:
enum: [i2c]
- if:
properties:
function:
const: led
then:
properties:
groups:
enum: [wifi_led]
- if:
properties:
function:
const: flash
then:
properties:
groups:
enum: [snfi]
- if:
properties:
function:
const: pcie
then:
properties:
groups:
items:
enum: [pcie_clk, pcie_wake, pcie_pereset]
maxItems: 3
- if:
properties:
function:
const: pwm
then:
properties:
groups:
items:
enum: [pwm0, pwm1_0, pwm1_1]
maxItems: 2
- if:
properties:
function:
const: spi
then:
properties:
groups:
items:
enum: [spi0, spi0_wp_hold, spi1_0, spi1_1, spi1_2, spi1_3]
maxItems: 2
- if:
properties:
function:
const: uart
then:
properties:
groups:
items:
enum: [uart1_0, uart1_rx_tx, uart1_cts_rts, uart1_1,
uart1_2_rx_tx, uart1_2_cts_rts, uart1_3_rx_tx,
uart1_3_cts_rts, uart2_0_rx_tx, uart2_0_cts_rts,
uart2_1, uart0, uart1, uart2]
maxItems: 2
- if:
properties:
function:
const: watchdog
then:
properties:
groups:
enum: [watchdog]
- if:
properties:
function:
const: wifi
then:
properties:
groups:
items:
enum: [wf_2g, wf_5g, wf_dbdc]
maxItems: 3
'^.*conf.*$':
type: object
additionalProperties: false
description:
pinconf configuration nodes.
$ref: /schemas/pinctrl/pincfg-node.yaml
properties:
pins:
description:
An array of strings. Each string contains the name of a pin. There
is no PIN 41 to PIN 65 above on mt7686b, you can only use those
pins on mt7986a.
items:
enum: [SYS_WATCHDOG, WF2G_LED, WF5G_LED, I2C_SCL, I2C_SDA, GPIO_0,
GPIO_1, GPIO_2, GPIO_3, GPIO_4, GPIO_5, GPIO_6, GPIO_7,
GPIO_8, GPIO_9, GPIO_10, GPIO_11, GPIO_12, GPIO_13,
GPIO_14, GPIO_15, PWM0, PWM1, SPI0_CLK, SPI0_MOSI,
SPI0_MISO, SPI0_CS, SPI0_HOLD, SPI0_WP, SPI1_CLK,
SPI1_MOSI, SPI1_MISO, SPI1_CS, SPI2_CLK, SPI2_MOSI,
SPI2_MISO, SPI2_CS, SPI2_HOLD, SPI2_WP, UART0_RXD,
UART0_TXD, PCIE_PERESET_N, UART1_RXD, UART1_TXD, UART1_CTS,
UART1_RTS, UART2_RXD, UART2_TXD, UART2_CTS, UART2_RTS,
EMMC_DATA_0, EMMC_DATA_1, EMMC_DATA_2, EMMC_DATA_3,
EMMC_DATA_4, EMMC_DATA_5, EMMC_DATA_6, EMMC_DATA_7,
EMMC_CMD, EMMC_CK, EMMC_DSL, EMMC_RSTB, PCM_DTX, PCM_DRX,
PCM_CLK, PCM_FS, MT7531_INT, SMI_MDC, SMI_MDIO,
WF0_DIG_RESETB, WF0_CBA_RESETB, WF0_XO_REQ, WF0_TOP_CLK,
WF0_TOP_DATA, WF0_HB1, WF0_HB2, WF0_HB3, WF0_HB4, WF0_HB0,
WF0_HB0_B, WF0_HB5, WF0_HB6, WF0_HB7, WF0_HB8, WF0_HB9,
WF0_HB10, WF1_DIG_RESETB, WF1_CBA_RESETB, WF1_XO_REQ,
WF1_TOP_CLK, WF1_TOP_DATA, WF1_HB1, WF1_HB2, WF1_HB3,
WF1_HB4, WF1_HB0, WF1_HB0_B, WF1_HB5, WF1_HB6, WF1_HB7,
WF1_HB8]
maxItems: 101
bias-disable: true
bias-pull-up:
oneOf:
- type: boolean
description: normal pull up.
- enum: [100, 101, 102, 103]
description:
PUPD/R1/R0 pull down type. See MTK_PUPD_SET_R1R0 defines in
dt-bindings/pinctrl/mt65xx.h.
bias-pull-down:
oneOf:
- type: boolean
description: normal pull down.
- enum: [100, 101, 102, 103]
description:
PUPD/R1/R0 pull down type. See MTK_PUPD_SET_R1R0 defines in
dt-bindings/pinctrl/mt65xx.h.
input-enable: true
input-disable: true
output-enable: true
output-low: true
output-high: true
input-schmitt-enable: true
input-schmitt-disable: true
drive-strength:
enum: [2, 4, 6, 8, 10, 12, 14, 16]
mediatek,pull-up-adv:
description: |
Valid arguments for 'mediatek,pull-up-adv' are '0', '1', '2', '3'
Pull up settings for 2 pull resistors, R0 and R1. 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: |
Valid arguments for 'mediatek,pull-up-adv' are '0', '1', '2', '3'
Pull down settings for 2 pull resistors, R0 and R1. 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:
- pins
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/pinctrl/mt65xx.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
pio: pinctrl@1001f000 {
compatible = "mediatek,mt7986a-pinctrl";
reg = <0 0x1001f000 0 0x1000>,
<0 0x11c30000 0 0x1000>,
<0 0x11c40000 0 0x1000>,
<0 0x11e20000 0 0x1000>,
<0 0x11e30000 0 0x1000>,
<0 0x11f00000 0 0x1000>,
<0 0x11f10000 0 0x1000>,
<0 0x1000b000 0 0x1000>;
reg-names = "gpio", "iocfg_rt", "iocfg_rb", "iocfg_lt",
"iocfg_lb", "iocfg_tr", "iocfg_tl", "eint";
gpio-controller;
#gpio-cells = <2>;
gpio-ranges = <&pio 0 0 100>;
interrupt-controller;
interrupts = <GIC_SPI 225 IRQ_TYPE_LEVEL_HIGH>;
interrupt-parent = <&gic>;
#interrupt-cells = <2>;
pcie_pins: pcie-pins {
mux {
function = "pcie";
groups = "pcie_clk", "pcie_wake", "pcie_pereset";
};
};
pwm_pins: pwm-pins {
mux {
function = "pwm";
groups = "pwm0", "pwm1_0";
};
};
spi0_pins: spi0-pins {
mux {
function = "spi";
groups = "spi0", "spi0_wp_hold";
};
};
uart1_pins: uart1-pins {
mux {
function = "uart";
groups = "uart1";
};
};
uart1_3_pins: uart1-3-pins {
mux {
function = "uart";
groups = "uart1_3_rx_tx", "uart1_3_cts_rts";
};
};
uart2_pins: uart2-pins {
mux {
function = "uart";
groups = "uart2";
};
};
mmc0_pins_default: mmc0-pins {
mux {
function = "emmc";
groups = "emmc_51";
};
conf-cmd-dat {
pins = "EMMC_DATA_0", "EMMC_DATA_1", "EMMC_DATA_2",
"EMMC_DATA_3", "EMMC_DATA_4", "EMMC_DATA_5",
"EMMC_DATA_6", "EMMC_DATA_7", "EMMC_CMD";
input-enable;
drive-strength = <4>;
bias-pull-up = <MTK_PUPD_SET_R1R0_01>; /* pull-up 10K */
};
conf-clk {
pins = "EMMC_CK";
drive-strength = <6>;
bias-pull-down = <MTK_PUPD_SET_R1R0_10>; /* pull-down 50K */
};
conf-ds {
pins = "EMMC_DSL";
bias-pull-down = <MTK_PUPD_SET_R1R0_10>; /* pull-down 50K */
};
conf-rst {
pins = "EMMC_RSTB";
drive-strength = <4>;
bias-pull-up = <MTK_PUPD_SET_R1R0_01>; /* pull-up 10K */
};
};
};
};