Apple's Type-C PHY (ATCPHY) is a PHY for USB 2.0, USB 3.x, USB4/Thunderbolt, and DisplayPort connectivity found in Apple Silicon SoCs. The PHY handles muxing between these different protocols and also provides the reset controller for the attached dwc3 USB controller. Signed-off-by: Sven Peter <sven@xxxxxxxxxx> --- .../devicetree/bindings/phy/apple,atcphy.yaml | 210 +++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 211 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/apple,atcphy.yaml b/Documentation/devicetree/bindings/phy/apple,atcphy.yaml new file mode 100644 index 0000000000000000000000000000000000000000..eb14010557c94f313b54b528e2d4039fe540062a --- /dev/null +++ b/Documentation/devicetree/bindings/phy/apple,atcphy.yaml @@ -0,0 +1,210 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/apple,atcphy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple Type-C PHY (ATCPHY) + +maintainers: + - Sven Peter <sven@xxxxxxxxxx> + +description: + The Apple Type-C PHY (ATCPHY) is a PHY for USB 2.0, USB 3.x, + USB4/Thunderbolt, and DisplayPort connectivity found in Apple Silicon SoCs. + + The PHY handles muxing between these different protocols and also provides the + reset controller for the attached dwc3 USB controller. + + The PHY is designed for USB4 operation and does not handle individual + differential pairs as distinct DisplayPort lanes. Any reference to lane in + this binding hence refers to two differential pairs (RX and TX) as used in USB + terminology. + +properties: + compatible: + enum: + - apple,t6000-atcphy + - apple,t6000-atcphy-dp-only # PHY hardwired to DP-to-HDMI converter on M2 Pro MacBook + - apple,t6020-atcphy + - apple,t8103-atcphy + - apple,t8112-atcphy + + reg: + minItems: 5 + maxItems: 5 + + reg-names: + items: + - const: core + - const: lpdptx + - const: axi2af + - const: usb2phy + - const: pipehandler + + "#phy-cells": + const: 1 + + "#reset-cells": + const: 0 + + orientation-switch: + type: boolean + description: + The PHY handles swapping lanes if the Type-C connector is flipped. + + mode-switch: + type: boolean + description: + The PHY handles muxing between USB 2.0, USB 3.x, USB4/Thunderbolt, and DisplayPort. + + power-domains: + minItems: 1 + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: Output endpoint of the PHY to the Type-C connector + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: Incoming endpoint from the USB3 controller + + port@2: + $ref: /schemas/graph.yaml#/properties/port + description: Incoming endpoint from the DisplayPort controller + + port@3: + $ref: /schemas/graph.yaml#/properties/port + description: Incoming endpoint from the USB4/Thunderbolt controller + + apple,tunable-axi2af: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + AXI2AF tunables. + + This array is filled with 3-tuples each containing three 32-bit values + <register offset>, <mask>, and <value> by the bootloader. + The driver will use these to configure the PHY by reading from each + register, ANDing it with <mask>, ORing it with <value>, and storing the + result back to the register. + These values slightly differ even between different chips of the same + generation and are likely calibration values determined by Apple at + manufacturing time. + + apple,tunable-common: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + Common tunables required for all modes, see apple,tunable-axi2af for details. + + apple,tunable-fuses: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + Fuse based tunables required for all modes, see apple,tunable-axi2af for details. + + apple,tunable-lane0-usb: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + USB tunables on lane 0, see apple,tunable-axi2af for details. + + apple,tunable-lane1-usb: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + USB tunables on lane 1, see apple,tunable-axi2af for details. + + apple,tunable-lane0-cio: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + USB4/Thunderbolt ("converged IO") tunables on lane 0, see apple,tunable-axi2af for details. + + apple,tunable-lane1-cio: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + USB4/Thunderbolt ("converged IO") tunables on lane 1, see apple,tunable-axi2af for details. + + apple,tunable-lane0-dp: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + DisplayPort tunables on lane 0, see apple,tunable-axi2af for details. + + Note that lane here refers to a USB RX and TX pair re-used for DisplayPort + and not to an individual DisplayPort differential lane. + + apple,tunable-lane1-dp: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + DisplayPort tunables on lane 1, see apple,tunable-axi2af for details. + + Note that lane here refers to a USB RX and TX pair re-used for DisplayPort + and not to an individual DisplayPort differential lane. + +required: + - compatible + - reg + - reg-names + - "#phy-cells" + - "#reset-cells" + - orientation-switch + - mode-switch + +additionalProperties: false + +examples: + - | + phy@383000000 { + compatible = "apple,t8103-atcphy"; + reg = <0x3 0x83000000 0x0 0x4c000>, + <0x3 0x83050000 0x0 0x8000>, + <0x3 0x80000000 0x0 0x4000>, + <0x3 0x82a90000 0x0 0x4000>, + <0x3 0x82a84000 0x0 0x4000>; + reg-names = "core", "lpdptx", "axi2af", "usb2phy", + "pipehandler"; + + #phy-cells = <1>; + #reset-cells = <0>; + + orientation-switch; + mode-switch; + power-domains = <&ps_atc0_usb>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + endpoint { + remote-endpoint = <&typec_connector_ss>; + }; + }; + + port@1 { + reg = <1>; + + endpoint { + remote-endpoint = <&dwc3_ss_out>; + }; + }; + + port@2 { + reg = <2>; + + endpoint { + remote-endpoint = <&dcp_dp_out>; + }; + }; + + port@3 { + reg = <3>; + + endpoint { + remote-endpoint = <&acio_tbt_out>; + }; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 0e085cb0762f765958d67be61ae0d3d773503431..11a9b084a2e51d7b9b2e4c1777a2439df4a6858b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2393,6 +2393,7 @@ F: Documentation/devicetree/bindings/nvme/apple,nvme-ans.yaml F: Documentation/devicetree/bindings/nvmem/apple,efuses.yaml F: Documentation/devicetree/bindings/nvmem/apple,spmi-nvmem.yaml F: Documentation/devicetree/bindings/pci/apple,pcie.yaml +F: Documentation/devicetree/bindings/phy/apple,atcphy.yaml F: Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml F: Documentation/devicetree/bindings/power/apple* F: Documentation/devicetree/bindings/power/reset/apple,smc-reboot.yaml -- 2.34.1
