1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2# Copyright (c) 2020 MediaTek 3%YAML 1.2 4--- 5$id: http://devicetree.org/schemas/phy/mediatek,tphy.yaml# 6$schema: http://devicetree.org/meta-schemas/core.yaml# 7 8title: MediaTek T-PHY Controller 9 10maintainers: 11 - Chunfeng Yun <chunfeng.yun@mediatek.com> 12 13description: | 14 The T-PHY controller supports physical layer functionality for a number of 15 controllers on MediaTek SoCs, includes USB2.0, USB3.0, PCIe and SATA. 16 17 Layout differences of banks between T-PHY V1 (mt8173/mt2701) and 18 T-PHY V2 (mt2712) / V3 (mt8195) when works on USB mode: 19 ----------------------------------- 20 Version 1: 21 port offset bank 22 shared 0x0000 SPLLC 23 0x0100 FMREG 24 u2 port0 0x0800 U2PHY_COM 25 u3 port0 0x0900 U3PHYD 26 0x0a00 U3PHYD_BANK2 27 0x0b00 U3PHYA 28 0x0c00 U3PHYA_DA 29 u2 port1 0x1000 U2PHY_COM 30 u3 port1 0x1100 U3PHYD 31 0x1200 U3PHYD_BANK2 32 0x1300 U3PHYA 33 0x1400 U3PHYA_DA 34 u2 port2 0x1800 U2PHY_COM 35 ... 36 37 Version 2/3: 38 port offset bank 39 u2 port0 0x0000 MISC 40 0x0100 FMREG 41 0x0300 U2PHY_COM 42 u3 port0 0x0700 SPLLC 43 0x0800 CHIP 44 0x0900 U3PHYD 45 0x0a00 U3PHYD_BANK2 46 0x0b00 U3PHYA 47 0x0c00 U3PHYA_DA 48 u2 port1 0x1000 MISC 49 0x1100 FMREG 50 0x1300 U2PHY_COM 51 u3 port1 0x1700 SPLLC 52 0x1800 CHIP 53 0x1900 U3PHYD 54 0x1a00 U3PHYD_BANK2 55 0x1b00 U3PHYA 56 0x1c00 U3PHYA_DA 57 u2 port2 0x2000 MISC 58 ... 59 60 SPLLC shared by u3 ports and FMREG shared by u2 ports on V1 are put back 61 into each port; a new bank MISC for u2 ports and CHIP for u3 ports are 62 added on V2; the FMREG bank for slew rate calibration is not used anymore 63 and reserved on V3; 64 65properties: 66 $nodename: 67 pattern: "^t-phy@[0-9a-f]+$" 68 69 compatible: 70 oneOf: 71 - items: 72 - enum: 73 - mediatek,mt2701-tphy 74 - mediatek,mt7623-tphy 75 - mediatek,mt7622-tphy 76 - mediatek,mt8516-tphy 77 - const: mediatek,generic-tphy-v1 78 - items: 79 - enum: 80 - mediatek,mt2712-tphy 81 - mediatek,mt7629-tphy 82 - mediatek,mt7986-tphy 83 - mediatek,mt8183-tphy 84 - mediatek,mt8186-tphy 85 - mediatek,mt8192-tphy 86 - mediatek,mt8365-tphy 87 - const: mediatek,generic-tphy-v2 88 - items: 89 - enum: 90 - mediatek,mt8188-tphy 91 - mediatek,mt8195-tphy 92 - const: mediatek,generic-tphy-v3 93 - const: mediatek,mt2701-u3phy 94 deprecated: true 95 - const: mediatek,mt2712-u3phy 96 deprecated: true 97 - const: mediatek,mt8173-u3phy 98 99 reg: 100 description: 101 Register shared by multiple ports, exclude port's private register. 102 It is needed for T-PHY V1, such as mt2701 and mt8173, but not for 103 T-PHY V2/V3, such as mt2712. 104 maxItems: 1 105 106 "#address-cells": 107 enum: [1, 2] 108 109 "#size-cells": 110 enum: [1, 2] 111 112 # Used with non-empty value if optional 'reg' is not provided. 113 # The format of the value is an arbitrary number of triplets of 114 # (child-bus-address, parent-bus-address, length). 115 ranges: true 116 117 mediatek,src-ref-clk-mhz: 118 description: 119 Frequency of reference clock for slew rate calibrate 120 default: 26 121 122 mediatek,src-coef: 123 description: 124 Coefficient for slew rate calibrate, depends on SoC process 125 $ref: /schemas/types.yaml#/definitions/uint32 126 default: 28 127 128# Required child node: 129patternProperties: 130 "^(usb|pcie|sata)-phy@[0-9a-f]+$": 131 type: object 132 description: 133 A sub-node is required for each port the controller provides. 134 Address range information including the usual 'reg' property 135 is used inside these nodes to describe the controller's topology. 136 137 properties: 138 reg: 139 maxItems: 1 140 141 clocks: 142 minItems: 1 143 items: 144 - description: Reference clock, (HS is 48Mhz, SS/P is 24~27Mhz) 145 - description: Reference clock of analog phy 146 description: 147 Uses both clocks if the clock of analog and digital phys are 148 separated, otherwise uses "ref" clock only if needed. 149 150 clock-names: 151 minItems: 1 152 items: 153 - const: ref 154 - const: da_ref 155 156 "#phy-cells": 157 const: 1 158 description: | 159 The cells contain the following arguments. 160 161 - description: The PHY type 162 enum: 163 - PHY_TYPE_USB2 164 - PHY_TYPE_USB3 165 - PHY_TYPE_PCIE 166 - PHY_TYPE_SATA 167 - PHY_TYPE_SGMII 168 169 nvmem-cells: 170 items: 171 - description: internal R efuse for U2 PHY or U3/PCIe PHY 172 - description: rx_imp_sel efuse for U3/PCIe PHY 173 - description: tx_imp_sel efuse for U3/PCIe PHY 174 description: | 175 Phandles to nvmem cell that contains the efuse data; 176 Available only for U2 PHY or U3/PCIe PHY of version 2/3, these 177 three items should be provided at the same time for U3/PCIe PHY, 178 when use software to load efuse; 179 If unspecified, will use hardware auto-load efuse. 180 181 nvmem-cell-names: 182 items: 183 - const: intr 184 - const: rx_imp 185 - const: tx_imp 186 187 # The following optional vendor properties are only for debug or HQA test 188 mediatek,eye-src: 189 description: 190 The value of slew rate calibrate (U2 phy) 191 $ref: /schemas/types.yaml#/definitions/uint32 192 minimum: 1 193 maximum: 7 194 195 mediatek,eye-vrt: 196 description: 197 The selection of VRT reference voltage (U2 phy) 198 $ref: /schemas/types.yaml#/definitions/uint32 199 minimum: 1 200 maximum: 7 201 202 mediatek,eye-term: 203 description: 204 The selection of HS_TX TERM reference voltage (U2 phy) 205 $ref: /schemas/types.yaml#/definitions/uint32 206 minimum: 1 207 maximum: 7 208 209 mediatek,intr: 210 description: 211 The selection of internal resistor (U2 phy) 212 $ref: /schemas/types.yaml#/definitions/uint32 213 minimum: 1 214 maximum: 31 215 216 mediatek,discth: 217 description: 218 The selection of disconnect threshold (U2 phy) 219 $ref: /schemas/types.yaml#/definitions/uint32 220 minimum: 1 221 maximum: 15 222 223 mediatek,pre-emphasis: 224 description: 225 The level of pre-emphasis which used to widen the eye opening and 226 boost eye swing, the unit step is about 4.16% increment; e.g. the 227 level 1 means amplitude increases about 4.16%, the level 2 is about 228 8.3% etc. (U2 phy) 229 $ref: /schemas/types.yaml#/definitions/uint32 230 minimum: 1 231 maximum: 3 232 233 mediatek,bc12: 234 description: 235 Specify the flag to enable BC1.2 if support it 236 type: boolean 237 238 mediatek,syscon-type: 239 $ref: /schemas/types.yaml#/definitions/phandle-array 240 maxItems: 1 241 description: 242 A phandle to syscon used to access the register of type switch, 243 the field should always be 3 cells long. 244 items: 245 items: 246 - description: 247 The first cell represents a phandle to syscon 248 - description: 249 The second cell represents the register offset 250 - description: 251 The third cell represents the index of config segment 252 enum: [0, 1, 2, 3] 253 254 required: 255 - reg 256 - "#phy-cells" 257 258 additionalProperties: false 259 260required: 261 - compatible 262 - "#address-cells" 263 - "#size-cells" 264 - ranges 265 266additionalProperties: false 267 268examples: 269 - | 270 #include <dt-bindings/clock/mt8173-clk.h> 271 #include <dt-bindings/interrupt-controller/arm-gic.h> 272 #include <dt-bindings/interrupt-controller/irq.h> 273 #include <dt-bindings/phy/phy.h> 274 usb@11271000 { 275 compatible = "mediatek,mt8173-mtu3", "mediatek,mtu3"; 276 reg = <0x11271000 0x3000>, <0x11280700 0x0100>; 277 reg-names = "mac", "ippc"; 278 phys = <&u2port0 PHY_TYPE_USB2>, 279 <&u3port0 PHY_TYPE_USB3>, 280 <&u2port1 PHY_TYPE_USB2>; 281 interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>; 282 clocks = <&topckgen CLK_TOP_USB30_SEL>; 283 clock-names = "sys_ck"; 284 }; 285 286 t-phy@11290000 { 287 compatible = "mediatek,mt8173-u3phy"; 288 reg = <0x11290000 0x800>; 289 #address-cells = <1>; 290 #size-cells = <1>; 291 ranges; 292 293 u2port0: usb-phy@11290800 { 294 reg = <0x11290800 0x100>; 295 clocks = <&apmixedsys CLK_APMIXED_REF2USB_TX>, <&clk48m>; 296 clock-names = "ref", "da_ref"; 297 #phy-cells = <1>; 298 }; 299 300 u3port0: usb-phy@11290900 { 301 reg = <0x11290900 0x700>; 302 clocks = <&clk26m>; 303 clock-names = "ref"; 304 #phy-cells = <1>; 305 }; 306 307 u2port1: usb-phy@11291000 { 308 reg = <0x11291000 0x100>; 309 #phy-cells = <1>; 310 }; 311 }; 312 313... 314