# 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 maintainers: - Chunfeng Yun 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,mt7986-xhci - mediatek,mt8173-xhci - mediatek,mt8183-xhci - mediatek,mt8186-xhci - mediatek,mt8188-xhci - mediatek,mt8192-xhci - mediatek,mt8195-xhci - mediatek,mt8365-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: minItems: 1 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 - description: frame count 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 - const: frmcnt_ck 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 resets: maxItems: 1 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 rx-fifo-depth: $ref: /schemas/types.yaml#/definitions/uint32 description: It is a quirk used to work around Gen1 isoc-in endpoint transfer issue that still send out unexpected ACK after device finishes the burst transfer with a short packet and cause an exception, specially on a 4K camera device, it happens on controller before about IPM v1.6.0; the side-effect is that it may cause performance drop about 10%, including bulk transfer, prefer to use 3k here. The size is in bytes. enum: [1024, 2048, 3072, 4096] # 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; 103 - used by mt8195, IP0, specific 1.03; 104 - used by mt8195, IP1, specific 1.04; 105 - used by mt8195, IP2, specific 1.05; 106 - used by mt8195, IP3, specific 1.06; enum: [1, 2, 101, 102, 103, 104, 105, 106] mediatek,u3p-dis-msk: $ref: /schemas/types.yaml#/definitions/uint32 description: The mask to disable u3ports, bit0 for u3port0, bit1 for u3port1, ... etc mediatek,u2p-dis-msk: $ref: /schemas/types.yaml#/definitions/uint32 description: The mask to disable u2ports, bit0 for u2port0, bit1 for u2port1, ... etc "#address-cells": const: 1 "#size-cells": const: 0 patternProperties: "@[0-9a-f]{1}$": 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 #include #include #include #include usb@11270000 { compatible = "mediatek,mt8173-xhci", "mediatek,mtk-xhci"; reg = <0x11270000 0x1000>, <0x11280700 0x0100>; reg-names = "mac", "ippc"; interrupts = ; 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; }; ...