313 lines
9.1 KiB
YAML
313 lines
9.1 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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# Copyright (c) 2020 MediaTek
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/phy/mediatek,tphy.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: MediaTek T-PHY Controller
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maintainers:
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- Chunfeng Yun <chunfeng.yun@mediatek.com>
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description: |
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The T-PHY controller supports physical layer functionality for a number of
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controllers on MediaTek SoCs, includes USB2.0, USB3.0, PCIe and SATA.
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Layout differences of banks between T-PHY V1 (mt8173/mt2701) and
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T-PHY V2 (mt2712) / V3 (mt8195) when works on USB mode:
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-----------------------------------
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Version 1:
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port offset bank
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shared 0x0000 SPLLC
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0x0100 FMREG
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u2 port0 0x0800 U2PHY_COM
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u3 port0 0x0900 U3PHYD
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0x0a00 U3PHYD_BANK2
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0x0b00 U3PHYA
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0x0c00 U3PHYA_DA
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u2 port1 0x1000 U2PHY_COM
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u3 port1 0x1100 U3PHYD
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0x1200 U3PHYD_BANK2
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0x1300 U3PHYA
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0x1400 U3PHYA_DA
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u2 port2 0x1800 U2PHY_COM
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...
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Version 2/3:
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port offset bank
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u2 port0 0x0000 MISC
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0x0100 FMREG
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0x0300 U2PHY_COM
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u3 port0 0x0700 SPLLC
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0x0800 CHIP
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0x0900 U3PHYD
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0x0a00 U3PHYD_BANK2
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0x0b00 U3PHYA
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0x0c00 U3PHYA_DA
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u2 port1 0x1000 MISC
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0x1100 FMREG
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0x1300 U2PHY_COM
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u3 port1 0x1700 SPLLC
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0x1800 CHIP
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0x1900 U3PHYD
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0x1a00 U3PHYD_BANK2
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0x1b00 U3PHYA
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0x1c00 U3PHYA_DA
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u2 port2 0x2000 MISC
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...
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SPLLC shared by u3 ports and FMREG shared by u2 ports on V1 are put back
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into each port; a new bank MISC for u2 ports and CHIP for u3 ports are
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added on V2; the FMREG bank for slew rate calibration is not used anymore
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and reserved on V3;
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properties:
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$nodename:
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pattern: "^t-phy@[0-9a-f]+$"
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compatible:
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oneOf:
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- items:
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- enum:
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- mediatek,mt2701-tphy
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- mediatek,mt7623-tphy
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- mediatek,mt7622-tphy
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- mediatek,mt8516-tphy
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- const: mediatek,generic-tphy-v1
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- items:
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- enum:
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- mediatek,mt2712-tphy
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- mediatek,mt7629-tphy
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- mediatek,mt8183-tphy
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- mediatek,mt8186-tphy
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- mediatek,mt8192-tphy
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- mediatek,mt8365-tphy
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- const: mediatek,generic-tphy-v2
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- items:
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- enum:
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- mediatek,mt8188-tphy
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- mediatek,mt8195-tphy
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- const: mediatek,generic-tphy-v3
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- const: mediatek,mt2701-u3phy
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deprecated: true
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- const: mediatek,mt2712-u3phy
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deprecated: true
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- const: mediatek,mt8173-u3phy
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reg:
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description:
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Register shared by multiple ports, exclude port's private register.
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It is needed for T-PHY V1, such as mt2701 and mt8173, but not for
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T-PHY V2/V3, such as mt2712.
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maxItems: 1
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"#address-cells":
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enum: [1, 2]
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"#size-cells":
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enum: [1, 2]
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# Used with non-empty value if optional 'reg' is not provided.
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# The format of the value is an arbitrary number of triplets of
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# (child-bus-address, parent-bus-address, length).
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ranges: true
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mediatek,src-ref-clk-mhz:
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description:
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Frequency of reference clock for slew rate calibrate
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default: 26
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mediatek,src-coef:
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description:
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Coefficient for slew rate calibrate, depends on SoC process
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 28
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# Required child node:
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patternProperties:
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"^(usb|pcie|sata)-phy@[0-9a-f]+$":
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type: object
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description:
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A sub-node is required for each port the controller provides.
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Address range information including the usual 'reg' property
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is used inside these nodes to describe the controller's topology.
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properties:
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reg:
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maxItems: 1
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clocks:
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minItems: 1
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items:
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- description: Reference clock, (HS is 48Mhz, SS/P is 24~27Mhz)
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- description: Reference clock of analog phy
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description:
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Uses both clocks if the clock of analog and digital phys are
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separated, otherwise uses "ref" clock only if needed.
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clock-names:
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minItems: 1
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items:
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- const: ref
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- const: da_ref
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"#phy-cells":
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const: 1
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description: |
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The cells contain the following arguments.
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- description: The PHY type
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enum:
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- PHY_TYPE_USB2
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- PHY_TYPE_USB3
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- PHY_TYPE_PCIE
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- PHY_TYPE_SATA
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- PHY_TYPE_SGMII
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nvmem-cells:
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items:
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- description: internal R efuse for U2 PHY or U3/PCIe PHY
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- description: rx_imp_sel efuse for U3/PCIe PHY
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- description: tx_imp_sel efuse for U3/PCIe PHY
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description: |
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Phandles to nvmem cell that contains the efuse data;
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Available only for U2 PHY or U3/PCIe PHY of version 2/3, these
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three items should be provided at the same time for U3/PCIe PHY,
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when use software to load efuse;
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If unspecified, will use hardware auto-load efuse.
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nvmem-cell-names:
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items:
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- const: intr
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- const: rx_imp
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- const: tx_imp
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# The following optional vendor properties are only for debug or HQA test
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mediatek,eye-src:
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description:
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The value of slew rate calibrate (U2 phy)
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1
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maximum: 7
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mediatek,eye-vrt:
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description:
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The selection of VRT reference voltage (U2 phy)
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1
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maximum: 7
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mediatek,eye-term:
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description:
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The selection of HS_TX TERM reference voltage (U2 phy)
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1
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maximum: 7
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mediatek,intr:
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description:
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The selection of internal resistor (U2 phy)
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1
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maximum: 31
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mediatek,discth:
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description:
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The selection of disconnect threshold (U2 phy)
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1
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maximum: 15
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mediatek,pre-emphasis:
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description:
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The level of pre-emphasis which used to widen the eye opening and
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boost eye swing, the unit step is about 4.16% increment; e.g. the
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level 1 means amplitude increases about 4.16%, the level 2 is about
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8.3% etc. (U2 phy)
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1
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maximum: 3
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mediatek,bc12:
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description:
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Specify the flag to enable BC1.2 if support it
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type: boolean
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mediatek,syscon-type:
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$ref: /schemas/types.yaml#/definitions/phandle-array
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maxItems: 1
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description:
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A phandle to syscon used to access the register of type switch,
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the field should always be 3 cells long.
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items:
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items:
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- description:
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The first cell represents a phandle to syscon
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- description:
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The second cell represents the register offset
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- description:
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The third cell represents the index of config segment
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enum: [0, 1, 2, 3]
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required:
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- reg
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- "#phy-cells"
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additionalProperties: false
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required:
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- compatible
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- "#address-cells"
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- "#size-cells"
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- ranges
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/mt8173-clk.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/phy/phy.h>
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usb@11271000 {
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compatible = "mediatek,mt8173-mtu3", "mediatek,mtu3";
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reg = <0x11271000 0x3000>, <0x11280700 0x0100>;
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reg-names = "mac", "ippc";
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phys = <&u2port0 PHY_TYPE_USB2>,
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<&u3port0 PHY_TYPE_USB3>,
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<&u2port1 PHY_TYPE_USB2>;
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interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
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clocks = <&topckgen CLK_TOP_USB30_SEL>;
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clock-names = "sys_ck";
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};
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t-phy@11290000 {
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compatible = "mediatek,mt8173-u3phy";
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reg = <0x11290000 0x800>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges;
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u2port0: usb-phy@11290800 {
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reg = <0x11290800 0x100>;
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clocks = <&apmixedsys CLK_APMIXED_REF2USB_TX>, <&clk48m>;
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clock-names = "ref", "da_ref";
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#phy-cells = <1>;
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};
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u3port0: usb-phy@11290900 {
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reg = <0x11290900 0x700>;
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clocks = <&clk26m>;
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clock-names = "ref";
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#phy-cells = <1>;
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};
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u2port1: usb-phy@11291000 {
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reg = <0x11291000 0x100>;
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#phy-cells = <1>;
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};
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};
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...
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