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 vusb33-supply: 110 description: Regulator of USB AVDD3.3v 111 112 vbus-supply: 113 description: Regulator of USB VBUS5v 114 115 resets: 116 maxItems: 1 117 118 usb3-lpm-capable: true 119 120 usb2-lpm-disable: true 121 122 imod-interval-ns: 123 description: 124 Interrupt moderation interval value, it is 8 times as much as that 125 defined in the xHCI spec on MTK's controller. 126 default: 5000 127 128 rx-fifo-depth: 129 $ref: /schemas/types.yaml#/definitions/uint32 130 description: 131 It is a quirk used to work around Gen1 isoc-in endpoint transfer issue 132 that still send out unexpected ACK after device finishes the burst 133 transfer with a short packet and cause an exception, specially on a 4K 134 camera device, it happens on controller before about IPM v1.6.0; 135 the side-effect is that it may cause performance drop about 10%, 136 including bulk transfer, prefer to use 3k here. The size is in bytes. 137 enum: [1024, 2048, 3072, 4096] 138 139 # the following properties are only used for case 1 140 wakeup-source: 141 description: enable USB remote wakeup, see power/wakeup-source.txt 142 type: boolean 143 144 mediatek,syscon-wakeup: 145 $ref: /schemas/types.yaml#/definitions/phandle-array 146 maxItems: 1 147 description: 148 A phandle to syscon used to access the register of the USB wakeup glue 149 layer between xHCI and SPM, the field should always be 3 cells long. 150 items: 151 items: 152 - description: 153 The first cell represents a phandle to syscon 154 - description: 155 The second cell represents the register base address of the glue 156 layer in syscon 157 - description: | 158 The third cell represents the hardware version of the glue layer, 159 1 - used by mt8173 etc, revision 1 without following IPM rule; 160 2 - used by mt2712 etc, revision 2 following IPM rule; 161 101 - used by mt8183, specific 1.01; 162 102 - used by mt8192, specific 1.02; 163 103 - used by mt8195, IP0, specific 1.03; 164 104 - used by mt8195, IP1, specific 1.04; 165 105 - used by mt8195, IP2, specific 1.05; 166 106 - used by mt8195, IP3, specific 1.06; 167 enum: [1, 2, 101, 102, 103, 104, 105, 106] 168 169 mediatek,u3p-dis-msk: 170 $ref: /schemas/types.yaml#/definitions/uint32 171 description: The mask to disable u3ports, bit0 for u3port0, 172 bit1 for u3port1, ... etc 173 174 mediatek,u2p-dis-msk: 175 $ref: /schemas/types.yaml#/definitions/uint32 176 description: The mask to disable u2ports, bit0 for u2port0, 177 bit1 for u2port1, ... etc 178 179 "#address-cells": 180 const: 1 181 182 "#size-cells": 183 const: 0 184 185patternProperties: 186 "@[0-9a-f]{1}$": 187 type: object 188 description: The hard wired USB devices. 189 190dependencies: 191 wakeup-source: [ 'mediatek,syscon-wakeup' ] 192 193required: 194 - compatible 195 - reg 196 - reg-names 197 - interrupts 198 - clocks 199 - clock-names 200 201additionalProperties: false 202 203examples: 204 - | 205 #include <dt-bindings/clock/mt8173-clk.h> 206 #include <dt-bindings/interrupt-controller/arm-gic.h> 207 #include <dt-bindings/interrupt-controller/irq.h> 208 #include <dt-bindings/phy/phy.h> 209 #include <dt-bindings/power/mt8173-power.h> 210 211 usb@11270000 { 212 compatible = "mediatek,mt8173-xhci", "mediatek,mtk-xhci"; 213 reg = <0x11270000 0x1000>, <0x11280700 0x0100>; 214 reg-names = "mac", "ippc"; 215 interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>; 216 power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>; 217 clocks = <&topckgen CLK_TOP_USB30_SEL>, <&clk26m>; 218 clock-names = "sys_ck", "ref_ck"; 219 phys = <&u3port0 PHY_TYPE_USB3>, <&u2port1 PHY_TYPE_USB2>; 220 vusb33-supply = <&mt6397_vusb_reg>; 221 vbus-supply = <&usb_p1_vbus>; 222 imod-interval-ns = <10000>; 223 mediatek,syscon-wakeup = <&pericfg 0x400 1>; 224 wakeup-source; 225 usb3-lpm-capable; 226 }; 227... 228