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linux/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
# Copyright (c) 2020 MediaTek
%YAML 1.2
---
$id: http://devicetree.org/schemas/usb/mediatek,mtu3.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MediaTek USB3 DRD Controller Device Tree Bindings
maintainers:
- Chunfeng Yun <chunfeng.yun@mediatek.com>
allOf:
- $ref: "usb-drd.yaml"
description: |
The DRD controller has a glue layer IPPC (IP Port Control), and its host is
based on xHCI.
properties:
compatible:
items:
- enum:
- mediatek,mt2712-mtu3
- mediatek,mt8173-mtu3
- mediatek,mt8183-mtu3
- mediatek,mt8192-mtu3
- const: mediatek,mtu3
reg:
items:
- description: the registers of device MAC
- description: the registers of IP Port Control
reg-names:
items:
- const: mac
- const: ippc
interrupts:
maxItems: 1
power-domains:
description: A phandle to USB power domain node to control USB's MTCMOS
maxItems: 1
clocks:
minItems: 1
items:
- description: Controller clock used by normal mode
- description: Reference clock used by low power mode etc
- description: Mcu bus clock for register access
- description: DMA bus clock for data transfer
clock-names:
minItems: 1
items:
- const: sys_ck # required, others are optional
- const: ref_ck
- const: mcu_ck
- const: dma_ck
phys:
description:
List of all the USB PHYs used, it's better to keep the sequence
as the hardware layout.
minItems: 1
items:
- description: USB2/HS PHY # required, others are optional
- description: USB3/SS(P) PHY
- description: USB2/HS PHY # the following for backward compatible
- description: USB3/SS(P) PHY
- description: USB2/HS PHY
- description: USB3/SS(P) PHY
- description: USB2/HS PHY
- description: USB3/SS(P) PHY
- description: USB2/HS PHY
vusb33-supply:
description: Regulator of USB AVDD3.3v
vbus-supply:
deprecated: true
description: |
Regulator of USB VBUS5v, needed when supports dual-role mode.
Particularly, if use an output GPIO to control a VBUS regulator, should
model it as a regulator. See bindings/regulator/fixed-regulator.yaml
It's considered valid for compatibility reasons, not allowed for
new bindings, and put into a usb-connector node.
dr_mode:
enum: [host, peripheral, otg]
default: otg
maximum-speed:
enum: [super-speed-plus, super-speed, high-speed, full-speed]
"#address-cells":
enum: [1, 2]
"#size-cells":
enum: [1, 2]
ranges: true
extcon:
deprecated: true
description: |
Phandle to the extcon device detecting the IDDIG/VBUS state, neede
when supports dual-role mode.
It's considered valid for compatibility reasons, not allowed for
new bindings, and use "usb-role-switch" property instead.
usb-role-switch:
$ref: /schemas/types.yaml#/definitions/flag
description: Support role switch.
type: boolean
connector:
$ref: /connector/usb-connector.yaml#
description:
Connector for dual role switch, especially for "gpio-usb-b-connector"
type: object
port:
description:
Any connector to the data bus of this controller should be modelled
using the OF graph bindings specified, if the "usb-role-switch"
property is used. See graph.txt
$ref: /schemas/graph.yaml#/properties/port
enable-manual-drd:
$ref: /schemas/types.yaml#/definitions/flag
description:
supports manual dual-role switch via debugfs; usually used when
receptacle is TYPE-A and also wants to support dual-role mode.
type: boolean
wakeup-source:
description: enable USB remote wakeup, see power/wakeup-source.txt
type: boolean
mediatek,syscon-wakeup:
$ref: /schemas/types.yaml#/definitions/phandle-array
maxItems: 1
description:
A phandle to syscon used to access the register of the USB wakeup glue
layer between xHCI and SPM, the field should always be 3 cells long.
items:
items:
- description:
The first cell represents a phandle to syscon
- description:
The second cell represents the register base address of the glue
layer in syscon
- description: |
The third cell represents the hardware version of the glue layer,
1 - used by mt8173 etc, revision 1 without following IPM rule;
2 - used by mt2712 etc, revision 2 with following IPM rule;
101 - used by mt8183, specific 1.01;
102 - used by mt8192, specific 1.02;
enum: [1, 2, 101, 102]
mediatek,u3p-dis-msk:
$ref: /schemas/types.yaml#/definitions/uint32
description: The mask to disable u3ports, bit0 for u3port0,
bit1 for u3port1, ... etc
# Required child node when support dual-role
patternProperties:
"^usb@[0-9a-f]+$":
type: object
$ref: /usb/mediatek,mtk-xhci.yaml#
description:
The xhci should be added as subnode to mtu3 as shown in the following
example if the host mode is enabled.
dependencies:
connector: [ 'usb-role-switch' ]
port: [ 'usb-role-switch' ]
wakeup-source: [ 'mediatek,syscon-wakeup' ]
required:
- compatible
- reg
- reg-names
- interrupts
- clocks
- clock-names
additionalProperties: false
examples:
# Dual role switch by extcon
- |
#include <dt-bindings/clock/mt8173-clk.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/phy/phy.h>
#include <dt-bindings/power/mt8173-power.h>
usb@11271000 {
compatible = "mediatek,mt8173-mtu3", "mediatek,mtu3";
reg = <0x11271000 0x3000>, <0x11280700 0x0100>;
reg-names = "mac", "ippc";
interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_LOW>;
phys = <&phy_port0 PHY_TYPE_USB3>, <&phy_port1 PHY_TYPE_USB2>;
power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>;
clocks = <&topckgen CLK_TOP_USB30_SEL>;
clock-names = "sys_ck";
vusb33-supply = <&mt6397_vusb_reg>;
vbus-supply = <&usb_p0_vbus>;
extcon = <&extcon_usb>;
dr_mode = "otg";
wakeup-source;
mediatek,syscon-wakeup = <&pericfg 0x400 1>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
xhci: usb@11270000 {
compatible = "mediatek,mt8173-xhci", "mediatek,mtk-xhci";
reg = <0x11270000 0x1000>;
reg-names = "mac";
interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>;
clocks = <&topckgen CLK_TOP_USB30_SEL>, <&clk26m>;
clock-names = "sys_ck", "ref_ck";
vusb33-supply = <&mt6397_vusb_reg>;
};
};
# Enable/disable device by an input gpio for VBUS pin
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/power/mt2712-power.h>
usb@112c1000 {
compatible = "mediatek,mt2712-mtu3", "mediatek,mtu3";
reg = <0x112c1000 0x3000>, <0x112d0700 0x0100>;
reg-names = "mac", "ippc";
interrupts = <GIC_SPI 248 IRQ_TYPE_LEVEL_LOW>;
phys = <&u2port2 PHY_TYPE_USB2>;
power-domains = <&scpsys MT2712_POWER_DOMAIN_USB2>;
clocks = <&topckgen CLK_TOP_USB30_SEL>;
clock-names = "sys_ck";
dr_mode = "peripheral";
usb-role-switch;
connector {
compatible = "gpio-usb-b-connector", "usb-b-connector";
type = "micro";
vbus-gpios = <&pio 13 GPIO_ACTIVE_HIGH>;
};
};
# Dual role switch with type-c
- |
usb@11201000 {
compatible ="mediatek,mt8183-mtu3", "mediatek,mtu3";
reg = <0x11201000 0x2e00>, <0x11203e00 0x0100>;
reg-names = "mac", "ippc";
interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_LOW>;
phys = <&u2port0 PHY_TYPE_USB2>;
clocks = <&clk26m>;
clock-names = "sys_ck";
mediatek,syscon-wakeup = <&pericfg 0x400 1>;
wakeup-source;
dr_mode = "otg";
usb-role-switch;
#address-cells = <1>;
#size-cells = <1>;
ranges;
host: usb@11200000 {
compatible = "mediatek,mt8183-xhci", "mediatek,mtk-xhci";
reg = <0x11200000 0x1000>;
reg-names = "mac";
interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_LOW>;
clocks = <&clk26m>;
clock-names = "sys_ck";
};
port {
usb_role_sw: endpoint {
remote-endpoint = <&hs_ep>;
};
};
};
...
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