1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2# Copyright (c) 2020 MediaTek 3%YAML 1.2 4--- 5$id: http://devicetree.org/schemas/usb/mediatek,mtk-xhci.yaml# 6$schema: http://devicetree.org/meta-schemas/core.yaml# 7 8title: MediaTek USB3 xHCI 9 10maintainers: 11 - Chunfeng Yun <chunfeng.yun@mediatek.com> 12 13allOf: 14 - $ref: usb-xhci.yaml 15 16description: | 17 There are two scenarios: 18 case 1: only supports xHCI driver; 19 case 2: supports dual-role mode, and the host is based on xHCI driver. 20 21properties: 22 # common properties for both case 1 and case 2 23 compatible: 24 items: 25 - enum: 26 - mediatek,mt2701-xhci 27 - mediatek,mt2712-xhci 28 - mediatek,mt7622-xhci 29 - mediatek,mt7623-xhci 30 - mediatek,mt7629-xhci 31 - mediatek,mt7986-xhci 32 - mediatek,mt8173-xhci 33 - mediatek,mt8183-xhci 34 - mediatek,mt8186-xhci 35 - mediatek,mt8188-xhci 36 - mediatek,mt8192-xhci 37 - mediatek,mt8195-xhci 38 - mediatek,mt8365-xhci 39 - const: mediatek,mtk-xhci 40 41 reg: 42 minItems: 1 43 items: 44 - description: the registers of xHCI MAC 45 - description: the registers of IP Port Control 46 47 reg-names: 48 minItems: 1 49 items: 50 - const: mac 51 - const: ippc # optional, only needed for case 1. 52 53 interrupts: 54 description: 55 use "interrupts-extended" when the interrupts are connected to the 56 separate interrupt controllers 57 minItems: 1 58 items: 59 - description: xHCI host controller interrupt 60 - description: optional, wakeup interrupt used to support runtime PM 61 62 interrupt-names: 63 minItems: 1 64 items: 65 - const: host 66 - const: wakeup 67 68 power-domains: 69 description: A phandle to USB power domain node to control USB's MTCMOS 70 maxItems: 1 71 72 clocks: 73 minItems: 1 74 items: 75 - description: Controller clock used by normal mode 76 - description: Reference clock used by low power mode etc 77 - description: Mcu bus clock for register access 78 - description: DMA bus clock for data transfer 79 - description: controller clock 80 - description: frame count clock 81 82 clock-names: 83 minItems: 1 84 items: 85 - const: sys_ck # required, the following ones are optional 86 - const: ref_ck 87 - const: mcu_ck 88 - const: dma_ck 89 - const: xhci_ck 90 - const: frmcnt_ck 91 92 phys: 93 description: 94 List of all PHYs used on this HCD, it's better to keep PHYs in order 95 as the hardware layout 96 minItems: 1 97 items: 98 - description: USB2/HS PHY # required, others are optional 99 - description: USB3/SS(P) PHY 100 - description: USB2/HS PHY 101 - description: USB3/SS(P) PHY 102 - description: USB2/HS PHY 103 - description: USB3/SS(P) PHY 104 - description: USB2/HS PHY 105 - description: USB3/SS(P) PHY 106 - description: USB2/HS PHY 107 108 vusb33-supply: 109 description: Regulator of USB AVDD3.3v 110 111 vbus-supply: 112 description: Regulator of USB VBUS5v 113 114 resets: 115 maxItems: 1 116 117 usb3-lpm-capable: true 118 119 usb2-lpm-disable: true 120 121 imod-interval-ns: 122 description: 123 Interrupt moderation interval value, it is 8 times as much as that 124 defined in the xHCI spec on MTK's controller. 125 default: 5000 126 127 rx-fifo-depth: 128 $ref: /schemas/types.yaml#/definitions/uint32 129 description: 130 It is a quirk used to work around Gen1 isoc-in endpoint transfer issue 131 that still send out unexpected ACK after device finishes the burst 132 transfer with a short packet and cause an exception, specially on a 4K 133 camera device, it happens on controller before about IPM v1.6.0; 134 the side-effect is that it may cause performance drop about 10%, 135 including bulk transfer, prefer to use 3k here. The size is in bytes. 136 enum: [1024, 2048, 3072, 4096] 137 138 # the following properties are only used for case 1 139 wakeup-source: 140 description: enable USB remote wakeup, see power/wakeup-source.txt 141 type: boolean 142 143 mediatek,syscon-wakeup: 144 $ref: /schemas/types.yaml#/definitions/phandle-array 145 maxItems: 1 146 description: 147 A phandle to syscon used to access the register of the USB wakeup glue 148 layer between xHCI and SPM, the field should always be 3 cells long. 149 items: 150 items: 151 - description: 152 The first cell represents a phandle to syscon 153 - description: 154 The second cell represents the register base address of the glue 155 layer in syscon 156 - description: | 157 The third cell represents the hardware version of the glue layer, 158 1 - used by mt8173 etc, revision 1 without following IPM rule; 159 2 - used by mt2712 etc, revision 2 following IPM rule; 160 101 - used by mt8183, specific 1.01; 161 102 - used by mt8192, specific 1.02; 162 103 - used by mt8195, IP0, specific 1.03; 163 104 - used by mt8195, IP1, specific 1.04; 164 105 - used by mt8195, IP2, specific 1.05; 165 106 - used by mt8195, IP3, specific 1.06; 166 enum: [1, 2, 101, 102, 103, 104, 105, 106] 167 168 mediatek,u3p-dis-msk: 169 $ref: /schemas/types.yaml#/definitions/uint32 170 description: The mask to disable u3ports, bit0 for u3port0, 171 bit1 for u3port1, ... etc 172 173 mediatek,u2p-dis-msk: 174 $ref: /schemas/types.yaml#/definitions/uint32 175 description: The mask to disable u2ports, bit0 for u2port0, 176 bit1 for u2port1, ... etc 177 178 "#address-cells": 179 const: 1 180 181 "#size-cells": 182 const: 0 183 184patternProperties: 185 "@[0-9a-f]{1}$": 186 type: object 187 description: The hard wired USB devices. 188 189dependencies: 190 wakeup-source: [ 'mediatek,syscon-wakeup' ] 191 192required: 193 - compatible 194 - reg 195 - reg-names 196 - interrupts 197 - clocks 198 - clock-names 199 200additionalProperties: false 201 202examples: 203 - | 204 #include <dt-bindings/clock/mt8173-clk.h> 205 #include <dt-bindings/interrupt-controller/arm-gic.h> 206 #include <dt-bindings/interrupt-controller/irq.h> 207 #include <dt-bindings/phy/phy.h> 208 #include <dt-bindings/power/mt8173-power.h> 209 210 usb@11270000 { 211 compatible = "mediatek,mt8173-xhci", "mediatek,mtk-xhci"; 212 reg = <0x11270000 0x1000>, <0x11280700 0x0100>; 213 reg-names = "mac", "ippc"; 214 interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>; 215 power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>; 216 clocks = <&topckgen CLK_TOP_USB30_SEL>, <&clk26m>; 217 clock-names = "sys_ck", "ref_ck"; 218 phys = <&u3port0 PHY_TYPE_USB3>, <&u2port1 PHY_TYPE_USB2>; 219 vusb33-supply = <&mt6397_vusb_reg>; 220 vbus-supply = <&usb_p1_vbus>; 221 imod-interval-ns = <10000>; 222 mediatek,syscon-wakeup = <&pericfg 0x400 1>; 223 wakeup-source; 224 usb3-lpm-capable; 225 }; 226... 227