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,mt7988-xhci 33 - mediatek,mt8173-xhci 34 - mediatek,mt8183-xhci 35 - mediatek,mt8186-xhci 36 - mediatek,mt8188-xhci 37 - mediatek,mt8192-xhci 38 - mediatek,mt8195-xhci 39 - mediatek,mt8365-xhci 40 - const: mediatek,mtk-xhci 41 42 reg: 43 minItems: 1 44 items: 45 - description: the registers of xHCI MAC 46 - description: the registers of IP Port Control 47 48 reg-names: 49 minItems: 1 50 items: 51 - const: mac 52 - const: ippc # optional, only needed for case 1. 53 54 interrupts: 55 description: 56 use "interrupts-extended" when the interrupts are connected to the 57 separate interrupt controllers 58 minItems: 1 59 items: 60 - description: xHCI host controller interrupt 61 - description: optional, wakeup interrupt used to support runtime PM 62 63 interrupt-names: 64 minItems: 1 65 items: 66 - const: host 67 - const: wakeup 68 69 power-domains: 70 description: A phandle to USB power domain node to control USB's MTCMOS 71 maxItems: 1 72 73 clocks: 74 minItems: 1 75 items: 76 - description: Controller clock used by normal mode 77 - description: Reference clock used by low power mode etc 78 - description: Mcu bus clock for register access 79 - description: DMA bus clock for data transfer 80 - description: controller clock 81 - description: frame count clock 82 83 clock-names: 84 minItems: 1 85 items: 86 - const: sys_ck # required, the following ones are optional 87 - const: ref_ck 88 - const: mcu_ck 89 - const: dma_ck 90 - const: xhci_ck 91 - const: frmcnt_ck 92 93 phys: 94 description: 95 List of all PHYs used on this HCD, it's better to keep PHYs in order 96 as the hardware layout 97 minItems: 1 98 items: 99 - description: USB2/HS PHY # required, others are optional 100 - description: USB3/SS(P) PHY 101 - description: USB2/HS PHY 102 - description: USB3/SS(P) PHY 103 - description: USB2/HS PHY 104 - description: USB3/SS(P) PHY 105 - description: USB2/HS PHY 106 - description: USB3/SS(P) PHY 107 - description: USB2/HS PHY 108 109 port: 110 $ref: /schemas/graph.yaml#/properties/port 111 description: Super Speed (SS) Output endpoint to a Type-C connector 112 113 vusb33-supply: 114 description: Regulator of USB AVDD3.3v 115 116 vbus-supply: 117 description: Regulator of USB VBUS5v 118 119 resets: 120 maxItems: 1 121 122 usb3-lpm-capable: true 123 124 usb2-lpm-disable: true 125 126 imod-interval-ns: 127 description: 128 Interrupt moderation interval value, it is 8 times as much as that 129 defined in the xHCI spec on MTK's controller. 130 default: 5000 131 132 rx-fifo-depth: 133 $ref: /schemas/types.yaml#/definitions/uint32 134 description: 135 It is a quirk used to work around Gen1 isoc-in endpoint transfer issue 136 that still send out unexpected ACK after device finishes the burst 137 transfer with a short packet and cause an exception, specially on a 4K 138 camera device, it happens on controller before about IPM v1.6.0; 139 the side-effect is that it may cause performance drop about 10%, 140 including bulk transfer, prefer to use 3k here. The size is in bytes. 141 enum: [1024, 2048, 3072, 4096] 142 143 # the following properties are only used for case 1 144 wakeup-source: 145 description: enable USB remote wakeup, see power/wakeup-source.txt 146 type: boolean 147 148 mediatek,syscon-wakeup: 149 $ref: /schemas/types.yaml#/definitions/phandle-array 150 maxItems: 1 151 description: 152 A phandle to syscon used to access the register of the USB wakeup glue 153 layer between xHCI and SPM, the field should always be 3 cells long. 154 items: 155 items: 156 - description: 157 The first cell represents a phandle to syscon 158 - description: 159 The second cell represents the register base address of the glue 160 layer in syscon 161 - description: | 162 The third cell represents the hardware version of the glue layer, 163 1 - used by mt8173 etc, revision 1 without following IPM rule; 164 2 - used by mt2712 etc, revision 2 following IPM rule; 165 101 - used by mt8183, specific 1.01; 166 102 - used by mt8192, specific 1.02; 167 103 - used by mt8195, IP0, specific 1.03; 168 104 - used by mt8195, IP1, specific 1.04; 169 105 - used by mt8195, IP2, specific 1.05; 170 106 - used by mt8195, IP3, specific 1.06; 171 enum: [1, 2, 101, 102, 103, 104, 105, 106] 172 173 mediatek,u3p-dis-msk: 174 $ref: /schemas/types.yaml#/definitions/uint32 175 description: The mask to disable u3ports, bit0 for u3port0, 176 bit1 for u3port1, ... etc 177 178 mediatek,u2p-dis-msk: 179 $ref: /schemas/types.yaml#/definitions/uint32 180 description: The mask to disable u2ports, bit0 for u2port0, 181 bit1 for u2port1, ... etc 182 183 "#address-cells": 184 const: 1 185 186 "#size-cells": 187 const: 0 188 189patternProperties: 190 "@[0-9a-f]{1}$": 191 type: object 192 description: The hard wired USB devices. 193 194dependencies: 195 wakeup-source: [ 'mediatek,syscon-wakeup' ] 196 197required: 198 - compatible 199 - reg 200 - reg-names 201 - interrupts 202 - clocks 203 - clock-names 204 205additionalProperties: false 206 207examples: 208 - | 209 #include <dt-bindings/clock/mt8173-clk.h> 210 #include <dt-bindings/interrupt-controller/arm-gic.h> 211 #include <dt-bindings/interrupt-controller/irq.h> 212 #include <dt-bindings/phy/phy.h> 213 #include <dt-bindings/power/mt8173-power.h> 214 215 usb@11270000 { 216 compatible = "mediatek,mt8173-xhci", "mediatek,mtk-xhci"; 217 reg = <0x11270000 0x1000>, <0x11280700 0x0100>; 218 reg-names = "mac", "ippc"; 219 interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>; 220 power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>; 221 clocks = <&topckgen CLK_TOP_USB30_SEL>, <&clk26m>; 222 clock-names = "sys_ck", "ref_ck"; 223 phys = <&u3port0 PHY_TYPE_USB3>, <&u2port1 PHY_TYPE_USB2>; 224 vusb33-supply = <&mt6397_vusb_reg>; 225 vbus-supply = <&usb_p1_vbus>; 226 imod-interval-ns = <10000>; 227 mediatek,syscon-wakeup = <&pericfg 0x400 1>; 228 wakeup-source; 229 usb3-lpm-capable; 230 }; 231... 232