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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,mtk-xhci.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MediaTek USB3 xHCI Device Tree Bindings
maintainers:
- Chunfeng Yun <chunfeng.yun@mediatek.com>
allOf:
- $ref: "usb-xhci.yaml"
description: |
There are two scenarios:
case 1: only supports xHCI driver;
case 2: supports dual-role mode, and the host is based on xHCI driver.
properties:
# common properties for both case 1 and case 2
compatible:
items:
- enum:
- mediatek,mt2701-xhci
- mediatek,mt2712-xhci
- mediatek,mt7622-xhci
- mediatek,mt7623-xhci
- mediatek,mt7629-xhci
- mediatek,mt8173-xhci
- mediatek,mt8183-xhci
- mediatek,mt8192-xhci
- const: mediatek,mtk-xhci
reg:
minItems: 1
items:
- description: the registers of xHCI MAC
- description: the registers of IP Port Control
reg-names:
minItems: 1
items:
- const: mac
- const: ippc # optional, only needed for case 1.
interrupts:
description:
use "interrupts-extended" when the interrupts are connected to the
separate interrupt controllers
minItems: 1
items:
- description: xHCI host controller interrupt
- description: optional, wakeup interrupt used to support runtime PM
interrupt-names:
items:
- const: host
- const: wakeup
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
- description: controller clock
clock-names:
minItems: 1
items:
- const: sys_ck # required, the following ones are optional
- const: ref_ck
- const: mcu_ck
- const: dma_ck
- const: xhci_ck
assigned-clocks:
minItems: 1
maxItems: 5
assigned-clock-parents:
minItems: 1
maxItems: 5
phys:
description:
List of all PHYs used on this HCD, it's better to keep PHYs in order
as the hardware layout
minItems: 1
items:
- description: USB2/HS PHY # required, others are optional
- 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
- description: USB3/SS(P) PHY
- description: USB2/HS PHY
vusb33-supply:
description: Regulator of USB AVDD3.3v
vbus-supply:
description: Regulator of USB VBUS5v
usb3-lpm-capable: true
usb2-lpm-disable: true
imod-interval-ns:
description:
Interrupt moderation interval value, it is 8 times as much as that
defined in the xHCI spec on MTK's controller.
default: 5000
# the following properties are only used for case 1
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 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:
$ref: /schemas/types.yaml#/definitions/uint32
description: The mask to disable u3ports, bit0 for u3port0,
bit1 for u3port1, ... etc
"#address-cells":
const: 1
"#size-cells":
const: 0
patternProperties:
"@[0-9a-f]{1}$":
type: object
description: The hard wired USB devices.
dependencies:
wakeup-source: [ 'mediatek,syscon-wakeup' ]
required:
- compatible
- reg
- reg-names
- interrupts
- clocks
- clock-names
additionalProperties: false
examples:
- |
#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@11270000 {
compatible = "mediatek,mt8173-xhci", "mediatek,mtk-xhci";
reg = <0x11270000 0x1000>, <0x11280700 0x0100>;
reg-names = "mac", "ippc";
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";
phys = <&u3port0 PHY_TYPE_USB3>, <&u2port1 PHY_TYPE_USB2>;
vusb33-supply = <&mt6397_vusb_reg>;
vbus-supply = <&usb_p1_vbus>;
imod-interval-ns = <10000>;
mediatek,syscon-wakeup = <&pericfg 0x400 1>;
wakeup-source;
usb3-lpm-capable;
};
...
|
