Commit e340c041 authored by André Draszik's avatar André Draszik Committed by Vinod Koul
Browse files

dt-bindings: phy: samsung,usb3-drd-phy: add gs101 compatible 



Add a dedicated google,gs101-usb31drd-phy compatible for Google Tensor
gs101 SoC.

It needs additional clocks enabled for register access, and additional
memory regions (PCS & PMA) are required for successful configuration.

It also requires various power supplies (regulators) for the internal
circuitry to work. The required voltages are:
* pll-supply: 0.85V
* dvdd-usb20-supply: 0.85V (+10%, -7%)
* vddh-usb20-supply: 1.8V (+10%, -7%)
* vdd33-usb20-supply: 3.3V (+10%, -7%)
* vdda-usbdp-supply: 0.85V
* vddh-usbdp-supply: 1.8V

Signed-off-by: default avatarAndré Draszik <andre.draszik@linaro.org>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: default avatarPeter Griffin <peter.griffin@linaro.org>
Link: https://lore.kernel.org/r/20240617-usb-phy-gs101-v3-1-b66de9ae7424@linaro.org


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 4c75fe2a

Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml

+75 −2
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ description: | 
properties:

  compatible:

    enum:

      - google,gs101-usb31drd-phy

      - samsung,exynos5250-usbdrd-phy

      - samsung,exynos5420-usbdrd-phy

      - samsung,exynos5433-usbdrd-phy
@@ -57,7 +58,15 @@ properties: 
      the OF graph bindings specified.



  reg:

    maxItems: 1

    minItems: 1

    maxItems: 3



  reg-names:

    minItems: 1

    items:

      - const: phy

      - const: pcs

      - const: pma



  samsung,pmu-syscon:

    $ref: /schemas/types.yaml#/definitions/phandle
@@ -72,6 +81,19 @@ properties: 
    description:

      VBUS Boost 5V power source.



  pll-supply:

    description: Power supply for the USB PLL.

  dvdd-usb20-supply:

    description: DVDD power supply for the USB 2.0 phy.

  vddh-usb20-supply:

    description: VDDh power supply for the USB 2.0 phy.

  vdd33-usb20-supply:

    description: 3.3V power supply for the USB 2.0 phy.

  vdda-usbdp-supply:

    description: VDDa power supply for the USB DP phy.

  vddh-usbdp-supply:

    description: VDDh power supply for the USB DP phy.



required:

  - compatible

  - clocks
@@ -81,6 +103,40 @@ required: 
  - samsung,pmu-syscon



allOf:

  - if:

      properties:

        compatible:

          contains:

            const: google,gs101-usb31drd-phy

    then:

      properties:

        clocks:

          items:

            - description: Gate of main PHY clock

            - description: Gate of PHY reference clock

            - description: Gate of control interface AXI clock

            - description: Gate of control interface APB clock

            - description: Gate of SCL APB clock

        clock-names:

          items:

            - const: phy

            - const: ref

            - const: ctrl_aclk

            - const: ctrl_pclk

            - const: scl_pclk

        reg:

          minItems: 3

        reg-names:

          minItems: 3

      required:

        - reg-names

        - pll-supply

        - dvdd-usb20-supply

        - vddh-usb20-supply

        - vdd33-usb20-supply

        - vdda-usbdp-supply

        - vddh-usbdp-supply



  - if:

      properties:

        compatible:
@@ -100,7 +156,20 @@ allOf: 
            - const: phy_utmi

            - const: phy_pipe

            - const: itp

    else:

        reg:

          maxItems: 1

        reg-names:

          maxItems: 1



  - if:

      properties:

        compatible:

          contains:

            enum:

              - samsung,exynos5250-usbdrd-phy

              - samsung,exynos5420-usbdrd-phy

              - samsung,exynos850-usbdrd-phy

    then:

      properties:

        clocks:

          minItems: 2
@@ -109,6 +178,10 @@ allOf: 
          items:

            - const: phy

            - const: ref

        reg:

          maxItems: 1

        reg-names:

          maxItems: 1



additionalProperties: false