Documentation/devicetree/bindings/phy/mediatek,tphy.yaml - linux - Git at Google

 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 # Copyright (c) 2020 MediaTek
 %YAML 1.2
 ---
 $id: http://devicetree.org/schemas/phy/mediatek,tphy.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#

 title: MediaTek T-PHY Controller

 maintainers:
   - Chunfeng Yun <chunfeng.yun@mediatek.com>

 description: |
   The T-PHY controller supports physical layer functionality for a number of
   controllers on MediaTek SoCs, includes USB2.0, USB3.0, PCIe and SATA.

   Layout differences of banks between T-PHY V1 (mt8173/mt2701) and
   T-PHY V2 (mt2712) / V3 (mt8195) when works on USB mode:
   -----------------------------------
   Version 1:
   port        offset    bank
   shared      0x0000    SPLLC
               0x0100    FMREG
   u2 port0    0x0800    U2PHY_COM
   u3 port0    0x0900    U3PHYD
               0x0a00    U3PHYD_BANK2
               0x0b00    U3PHYA
               0x0c00    U3PHYA_DA
   u2 port1    0x1000    U2PHY_COM
   u3 port1    0x1100    U3PHYD
               0x1200    U3PHYD_BANK2
               0x1300    U3PHYA
               0x1400    U3PHYA_DA
   u2 port2    0x1800    U2PHY_COM
               ...

   Version 2/3:
   port        offset    bank
   u2 port0    0x0000    MISC
               0x0100    FMREG
               0x0300    U2PHY_COM
   u3 port0    0x0700    SPLLC
               0x0800    CHIP
               0x0900    U3PHYD
               0x0a00    U3PHYD_BANK2
               0x0b00    U3PHYA
               0x0c00    U3PHYA_DA
   u2 port1    0x1000    MISC
               0x1100    FMREG
               0x1300    U2PHY_COM
   u3 port1    0x1700    SPLLC
               0x1800    CHIP
               0x1900    U3PHYD
               0x1a00    U3PHYD_BANK2
               0x1b00    U3PHYA
               0x1c00    U3PHYA_DA
   u2 port2    0x2000    MISC
               ...

   SPLLC shared by u3 ports and FMREG shared by u2 ports on V1 are put back
   into each port; a new bank MISC for u2 ports and CHIP for u3 ports are
   added on V2; the FMREG bank for slew rate calibration is not used anymore
   and reserved on V3;

 properties:
   $nodename:
     pattern: "^t-phy(@[0-9a-f]+)?$"

   compatible:
     oneOf:
       - items:
           - enum:
               - mediatek,mt2701-tphy
               - mediatek,mt7623-tphy
               - mediatek,mt7622-tphy
               - mediatek,mt8516-tphy
           - const: mediatek,generic-tphy-v1
       - items:
           - enum:
               - mediatek,mt2712-tphy
               - mediatek,mt7629-tphy
               - mediatek,mt7986-tphy
               - mediatek,mt8183-tphy
               - mediatek,mt8186-tphy
               - mediatek,mt8192-tphy
               - mediatek,mt8365-tphy
           - const: mediatek,generic-tphy-v2
       - items:
           - enum:
               - mediatek,mt8188-tphy
               - mediatek,mt8195-tphy
           - const: mediatek,generic-tphy-v3
       - const: mediatek,mt2701-u3phy
         deprecated: true
       - const: mediatek,mt2712-u3phy
         deprecated: true
       - const: mediatek,mt8173-u3phy

   reg:
     description:
       Register shared by multiple ports, exclude port's private register.
       It is needed for T-PHY V1, such as mt2701 and mt8173, but not for
       T-PHY V2/V3, such as mt2712.
     maxItems: 1

   "#address-cells":
     enum: [1, 2]

   "#size-cells":
     enum: [1, 2]

   # Used with non-empty value if optional 'reg' is not provided.
   # The format of the value is an arbitrary number of triplets of
   # (child-bus-address, parent-bus-address, length).
   ranges: true

   mediatek,src-ref-clk-mhz:
     description:
       Frequency of reference clock for slew rate calibrate
     default: 26

   mediatek,src-coef:
     description:
       Coefficient for slew rate calibrate, depends on SoC process
     $ref: /schemas/types.yaml#/definitions/uint32
     default: 28

 # Required child node:
 patternProperties:
   "^(usb|pcie|sata)-phy@[0-9a-f]+$":
     type: object
     description:
       A sub-node is required for each port the controller provides.
       Address range information including the usual 'reg' property
       is used inside these nodes to describe the controller's topology.

     properties:
       reg:
         maxItems: 1

       clocks:
         minItems: 1
         items:
           - description: Reference clock, (HS is 48Mhz, SS/P is 24~27Mhz)
           - description: Reference clock of analog phy
         description:
           Uses both clocks if the clock of analog and digital phys are
           separated, otherwise uses "ref" clock only if needed.

       clock-names:
         minItems: 1
         items:
           - const: ref
           - const: da_ref

       "#phy-cells":
         const: 1
         description: |
           The cells contain the following arguments.

           - description: The PHY type
               enum:
                 - PHY_TYPE_USB2
                 - PHY_TYPE_USB3
                 - PHY_TYPE_PCIE
                 - PHY_TYPE_SATA
                 - PHY_TYPE_SGMII

       nvmem-cells:
         items:
           - description: internal R efuse for U2 PHY or U3/PCIe PHY
           - description: rx_imp_sel efuse for U3/PCIe PHY
           - description: tx_imp_sel efuse for U3/PCIe PHY
         description: |
           Phandles to nvmem cell that contains the efuse data;
           Available only for U2 PHY or U3/PCIe PHY of version 2/3, these
           three items should be provided at the same time for U3/PCIe PHY,
           when use software to load efuse;
           If unspecified, will use hardware auto-load efuse.

       nvmem-cell-names:
         items:
           - const: intr
           - const: rx_imp
           - const: tx_imp

       # The following optional vendor properties are only for debug or HQA test
       mediatek,eye-src:
         description:
           The value of slew rate calibrate (U2 phy)
         $ref: /schemas/types.yaml#/definitions/uint32
         minimum: 1
         maximum: 7

       mediatek,eye-vrt:
         description:
           The selection of VRT reference voltage (U2 phy)
         $ref: /schemas/types.yaml#/definitions/uint32
         minimum: 1
         maximum: 7

       mediatek,eye-term:
         description:
           The selection of HS_TX TERM reference voltage (U2 phy)
         $ref: /schemas/types.yaml#/definitions/uint32
         minimum: 1
         maximum: 7

       mediatek,intr:
         description:
           The selection of internal resistor (U2 phy)
         $ref: /schemas/types.yaml#/definitions/uint32
         minimum: 1
         maximum: 31

       mediatek,discth:
         description:
           The selection of disconnect threshold (U2 phy)
         $ref: /schemas/types.yaml#/definitions/uint32
         minimum: 1
         maximum: 15

       mediatek,pre-emphasis:
         description:
           The level of pre-emphasis which used to widen the eye opening and
           boost eye swing, the unit step is about 4.16% increment; e.g. the
           level 1 means amplitude increases about 4.16%, the level 2 is about
           8.3% etc. (U2 phy)
         $ref: /schemas/types.yaml#/definitions/uint32
         minimum: 1
         maximum: 3

       mediatek,bc12:
         description:
           Specify the flag to enable BC1.2 if support it
         type: boolean

       mediatek,force-mode:
         description:
           The force mode is used to manually switch the shared phy mode between
           USB3 and PCIe, when USB3 phy type is selected by the consumer, and
           force-mode is set, will cause phy's power and pipe toggled and force
           phy as USB3 mode which switched from default PCIe mode. But prefer to
           use the property "mediatek,syscon-type" for newer SoCs that support it.
         type: boolean

       mediatek,syscon-type:
         $ref: /schemas/types.yaml#/definitions/phandle-array
         maxItems: 1
         description:
           A phandle to syscon used to access the register of type switch,
           the field should always be 3 cells long.
         items:
           items:
             - description:
                 The first cell represents a phandle to syscon
             - description:
                 The second cell represents the register offset
             - description:
                 The third cell represents the index of config segment
               enum: [0, 1, 2, 3]

     required:
       - reg
       - "#phy-cells"

     additionalProperties: false

 required:
   - compatible
   - "#address-cells"
   - "#size-cells"
   - ranges

 additionalProperties: false

 examples:
   - |
     #include <dt-bindings/clock/mt8173-clk.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     #include <dt-bindings/interrupt-controller/irq.h>
     #include <dt-bindings/phy/phy.h>
     usb@11271000 {
         compatible = "mediatek,mt8173-mtu3", "mediatek,mtu3";
         reg = <0x11271000 0x3000>, <0x11280700 0x0100>;
         reg-names = "mac", "ippc";
         phys = <&u2port0 PHY_TYPE_USB2>,
                <&u3port0 PHY_TYPE_USB3>,
                <&u2port1 PHY_TYPE_USB2>;
         interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
         clocks = <&topckgen CLK_TOP_USB30_SEL>;
         clock-names = "sys_ck";
     };

     t-phy@11290000 {
         compatible = "mediatek,mt8173-u3phy";
         reg = <0x11290000 0x800>;
         #address-cells = <1>;
         #size-cells = <1>;
         ranges;

         u2port0: usb-phy@11290800 {
             reg = <0x11290800 0x100>;
             clocks = <&apmixedsys CLK_APMIXED_REF2USB_TX>, <&clk48m>;
             clock-names = "ref", "da_ref";
             #phy-cells = <1>;
         };

         u3port0: usb-phy@11290900 {
             reg = <0x11290900 0x700>;
             clocks = <&clk26m>;
             clock-names = "ref";
             #phy-cells = <1>;
         };

         u2port1: usb-phy@11291000 {
             reg = <0x11291000 0x100>;
             #phy-cells = <1>;
         };
     };

 ...
	# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
	# Copyright (c) 2020 MediaTek
	%YAML 1.2
	---
	$id: http://devicetree.org/schemas/phy/mediatek,tphy.yaml#
	$schema: http://devicetree.org/meta-schemas/core.yaml#

	title: MediaTek T-PHY Controller

	maintainers:
	- Chunfeng Yun <chunfeng.yun@mediatek.com>

	description: \|
	The T-PHY controller supports physical layer functionality for a number of
	controllers on MediaTek SoCs, includes USB2.0, USB3.0, PCIe and SATA.

	Layout differences of banks between T-PHY V1 (mt8173/mt2701) and
	T-PHY V2 (mt2712) / V3 (mt8195) when works on USB mode:
	-----------------------------------
	Version 1:
	port offset bank
	shared 0x0000 SPLLC
	0x0100 FMREG
	u2 port0 0x0800 U2PHY_COM
	u3 port0 0x0900 U3PHYD
	0x0a00 U3PHYD_BANK2
	0x0b00 U3PHYA
	0x0c00 U3PHYA_DA
	u2 port1 0x1000 U2PHY_COM
	u3 port1 0x1100 U3PHYD
	0x1200 U3PHYD_BANK2
	0x1300 U3PHYA
	0x1400 U3PHYA_DA
	u2 port2 0x1800 U2PHY_COM
	...

	Version 2/3:
	port offset bank
	u2 port0 0x0000 MISC
	0x0100 FMREG
	0x0300 U2PHY_COM
	u3 port0 0x0700 SPLLC
	0x0800 CHIP
	0x0900 U3PHYD
	0x0a00 U3PHYD_BANK2
	0x0b00 U3PHYA
	0x0c00 U3PHYA_DA
	u2 port1 0x1000 MISC
	0x1100 FMREG
	0x1300 U2PHY_COM
	u3 port1 0x1700 SPLLC
	0x1800 CHIP
	0x1900 U3PHYD
	0x1a00 U3PHYD_BANK2
	0x1b00 U3PHYA
	0x1c00 U3PHYA_DA
	u2 port2 0x2000 MISC
	...

	SPLLC shared by u3 ports and FMREG shared by u2 ports on V1 are put back
	into each port; a new bank MISC for u2 ports and CHIP for u3 ports are
	added on V2; the FMREG bank for slew rate calibration is not used anymore
	and reserved on V3;

	properties:
	$nodename:
	pattern: "^t-phy(@[0-9a-f]+)?$"

	compatible:
	oneOf:
	- items:
	- enum:
	- mediatek,mt2701-tphy
	- mediatek,mt7623-tphy
	- mediatek,mt7622-tphy
	- mediatek,mt8516-tphy
	- const: mediatek,generic-tphy-v1
	- items:
	- enum:
	- mediatek,mt2712-tphy
	- mediatek,mt7629-tphy
	- mediatek,mt7986-tphy
	- mediatek,mt8183-tphy
	- mediatek,mt8186-tphy
	- mediatek,mt8192-tphy
	- mediatek,mt8365-tphy
	- const: mediatek,generic-tphy-v2
	- items:
	- enum:
	- mediatek,mt8188-tphy
	- mediatek,mt8195-tphy
	- const: mediatek,generic-tphy-v3
	- const: mediatek,mt2701-u3phy
	deprecated: true
	- const: mediatek,mt2712-u3phy
	deprecated: true
	- const: mediatek,mt8173-u3phy

	reg:
	description:
	Register shared by multiple ports, exclude port's private register.
	It is needed for T-PHY V1, such as mt2701 and mt8173, but not for
	T-PHY V2/V3, such as mt2712.
	maxItems: 1

	"#address-cells":
	enum: [1, 2]

	"#size-cells":
	enum: [1, 2]

	# Used with non-empty value if optional 'reg' is not provided.
	# The format of the value is an arbitrary number of triplets of
	# (child-bus-address, parent-bus-address, length).
	ranges: true

	mediatek,src-ref-clk-mhz:
	description:
	Frequency of reference clock for slew rate calibrate
	default: 26

	mediatek,src-coef:
	description:
	Coefficient for slew rate calibrate, depends on SoC process
	$ref: /schemas/types.yaml#/definitions/uint32
	default: 28

	# Required child node:
	patternProperties:
	"^(usb\|pcie\|sata)-phy@[0-9a-f]+$":
	type: object
	description:
	A sub-node is required for each port the controller provides.
	Address range information including the usual 'reg' property
	is used inside these nodes to describe the controller's topology.

	properties:
	reg:
	maxItems: 1

	clocks:
	minItems: 1
	items:
	- description: Reference clock, (HS is 48Mhz, SS/P is 24~27Mhz)
	- description: Reference clock of analog phy
	description:
	Uses both clocks if the clock of analog and digital phys are
	separated, otherwise uses "ref" clock only if needed.

	clock-names:
	minItems: 1
	items:
	- const: ref
	- const: da_ref

	"#phy-cells":
	const: 1
	description: \|
	The cells contain the following arguments.

	- description: The PHY type
	enum:
	- PHY_TYPE_USB2
	- PHY_TYPE_USB3
	- PHY_TYPE_PCIE
	- PHY_TYPE_SATA
	- PHY_TYPE_SGMII

	nvmem-cells:
	items:
	- description: internal R efuse for U2 PHY or U3/PCIe PHY
	- description: rx_imp_sel efuse for U3/PCIe PHY
	- description: tx_imp_sel efuse for U3/PCIe PHY
	description: \|
	Phandles to nvmem cell that contains the efuse data;
	Available only for U2 PHY or U3/PCIe PHY of version 2/3, these
	three items should be provided at the same time for U3/PCIe PHY,
	when use software to load efuse;
	If unspecified, will use hardware auto-load efuse.

	nvmem-cell-names:
	items:
	- const: intr
	- const: rx_imp
	- const: tx_imp

	# The following optional vendor properties are only for debug or HQA test
	mediatek,eye-src:
	description:
	The value of slew rate calibrate (U2 phy)
	$ref: /schemas/types.yaml#/definitions/uint32
	minimum: 1
	maximum: 7

	mediatek,eye-vrt:
	description:
	The selection of VRT reference voltage (U2 phy)
	$ref: /schemas/types.yaml#/definitions/uint32
	minimum: 1
	maximum: 7

	mediatek,eye-term:
	description:
	The selection of HS_TX TERM reference voltage (U2 phy)
	$ref: /schemas/types.yaml#/definitions/uint32
	minimum: 1
	maximum: 7

	mediatek,intr:
	description:
	The selection of internal resistor (U2 phy)
	$ref: /schemas/types.yaml#/definitions/uint32
	minimum: 1
	maximum: 31

	mediatek,discth:
	description:
	The selection of disconnect threshold (U2 phy)
	$ref: /schemas/types.yaml#/definitions/uint32
	minimum: 1
	maximum: 15

	mediatek,pre-emphasis:
	description:
	The level of pre-emphasis which used to widen the eye opening and
	boost eye swing, the unit step is about 4.16% increment; e.g. the
	level 1 means amplitude increases about 4.16%, the level 2 is about
	8.3% etc. (U2 phy)
	$ref: /schemas/types.yaml#/definitions/uint32
	minimum: 1
	maximum: 3

	mediatek,bc12:
	description:
	Specify the flag to enable BC1.2 if support it
	type: boolean

	mediatek,force-mode:
	description:
	The force mode is used to manually switch the shared phy mode between
	USB3 and PCIe, when USB3 phy type is selected by the consumer, and
	force-mode is set, will cause phy's power and pipe toggled and force
	phy as USB3 mode which switched from default PCIe mode. But prefer to
	use the property "mediatek,syscon-type" for newer SoCs that support it.
	type: boolean

	mediatek,syscon-type:
	$ref: /schemas/types.yaml#/definitions/phandle-array
	maxItems: 1
	description:
	A phandle to syscon used to access the register of type switch,
	the field should always be 3 cells long.
	items:
	items:
	- description:
	The first cell represents a phandle to syscon
	- description:
	The second cell represents the register offset
	- description:
	The third cell represents the index of config segment
	enum: [0, 1, 2, 3]

	required:
	- reg
	- "#phy-cells"

	additionalProperties: false

	required:
	- compatible
	- "#address-cells"
	- "#size-cells"
	- ranges

	additionalProperties: false

	examples:
	- \|
	#include <dt-bindings/clock/mt8173-clk.h>
	#include <dt-bindings/interrupt-controller/arm-gic.h>
	#include <dt-bindings/interrupt-controller/irq.h>
	#include <dt-bindings/phy/phy.h>
	usb@11271000 {
	compatible = "mediatek,mt8173-mtu3", "mediatek,mtu3";
	reg = <0x11271000 0x3000>, <0x11280700 0x0100>;
	reg-names = "mac", "ippc";
	phys = <&u2port0 PHY_TYPE_USB2>,
	<&u3port0 PHY_TYPE_USB3>,
	<&u2port1 PHY_TYPE_USB2>;
	interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
	clocks = <&topckgen CLK_TOP_USB30_SEL>;
	clock-names = "sys_ck";
	};

	t-phy@11290000 {
	compatible = "mediatek,mt8173-u3phy";
	reg = <0x11290000 0x800>;
	#address-cells = <1>;
	#size-cells = <1>;
	ranges;

	u2port0: usb-phy@11290800 {
	reg = <0x11290800 0x100>;
	clocks = <&apmixedsys CLK_APMIXED_REF2USB_TX>, <&clk48m>;
	clock-names = "ref", "da_ref";
	#phy-cells = <1>;
	};

	u3port0: usb-phy@11290900 {
	reg = <0x11290900 0x700>;
	clocks = <&clk26m>;
	clock-names = "ref";
	#phy-cells = <1>;
	};

	u2port1: usb-phy@11291000 {
	reg = <0x11291000 0x100>;
	#phy-cells = <1>;
	};
	};

	...