1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 # Copyright (c) 2020 MediaTek
5 $id: http://devicetree.org/schemas/phy/mediatek,tphy.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: MediaTek T-PHY Controller
14 The T-PHY controller supports physical layer functionality for a number of
15 controllers on MediaTek SoCs, includes USB2.0, USB3.0, PCIe and SATA.
17 Layout differences of banks between T-PHY V1 (mt8173/mt2701) and
18 T-PHY V2 (mt2712) / V3 (mt8195) when works on USB mode:
19 -----------------------------------
24 u2 port0 0x0800 U2PHY_COM
25 u3 port0 0x0900 U3PHYD
29 u2 port1 0x1000 U2PHY_COM
30 u3 port1 0x1100 U3PHYD
34 u2 port2 0x1800 U2PHY_COM
60 SPLLC shared by u3 ports and FMREG shared by u2 ports on V1 are put back
61 into each port; a new bank MISC for u2 ports and CHIP for u3 ports are
62 added on V2; the FMREG bank for slew rate calibration is not used anymore
67 pattern: "^t-phy(@[0-9a-f]+)?$"
73 - mediatek,mt2701-tphy
74 - mediatek,mt7623-tphy
75 - mediatek,mt7622-tphy
76 - mediatek,mt8516-tphy
77 - const: mediatek,generic-tphy-v1
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
90 - mediatek,mt8188-tphy
91 - mediatek,mt8195-tphy
92 - const: mediatek,generic-tphy-v3
93 - const: mediatek,mt2701-u3phy
95 - const: mediatek,mt2712-u3phy
97 - const: mediatek,mt8173-u3phy
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.
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).
117 mediatek,src-ref-clk-mhz:
119 Frequency of reference clock for slew rate calibrate
124 Coefficient for slew rate calibrate, depends on SoC process
125 $ref: /schemas/types.yaml#/definitions/uint32
128 # Required child node:
130 "^(usb|pcie|sata)-phy@[0-9a-f]+$":
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.
144 - description: Reference clock, (HS is 48Mhz, SS/P is 24~27Mhz)
145 - description: Reference clock of analog phy
147 Uses both clocks if the clock of analog and digital phys are
148 separated, otherwise uses "ref" clock only if needed.
159 The cells contain the following arguments.
161 - description: The PHY type
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
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.
187 # The following optional vendor properties are only for debug or HQA test
190 The value of slew rate calibrate (U2 phy)
191 $ref: /schemas/types.yaml#/definitions/uint32
197 The selection of VRT reference voltage (U2 phy)
198 $ref: /schemas/types.yaml#/definitions/uint32
204 The selection of HS_TX TERM reference voltage (U2 phy)
205 $ref: /schemas/types.yaml#/definitions/uint32
211 The selection of internal resistor (U2 phy)
212 $ref: /schemas/types.yaml#/definitions/uint32
218 The selection of disconnect threshold (U2 phy)
219 $ref: /schemas/types.yaml#/definitions/uint32
223 mediatek,pre-emphasis:
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
229 $ref: /schemas/types.yaml#/definitions/uint32
235 Specify the flag to enable BC1.2 if support it
238 mediatek,syscon-type:
239 $ref: /schemas/types.yaml#/definitions/phandle-array
242 A phandle to syscon used to access the register of type switch,
243 the field should always be 3 cells long.
247 The first cell represents a phandle to syscon
249 The second cell represents the register offset
251 The third cell represents the index of config segment
258 additionalProperties: false
266 additionalProperties: false
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>
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";
287 compatible = "mediatek,mt8173-u3phy";
288 reg = <0x11290000 0x800>;
289 #address-cells = <1>;
293 u2port0: usb-phy@11290800 {
294 reg = <0x11290800 0x100>;
295 clocks = <&apmixedsys CLK_APMIXED_REF2USB_TX>, <&clk48m>;
296 clock-names = "ref", "da_ref";
300 u3port0: usb-phy@11290900 {
301 reg = <0x11290900 0x700>;
307 u2port1: usb-phy@11291000 {
308 reg = <0x11291000 0x100>;