xref: /openbmc/linux/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-pcie-phy.yaml (revision 30638230)

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/phy/qcom,sc8280xp-qmp-pcie-phy.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Qualcomm QMP PHY controller (PCIe, SC8280XP)

maintainers:
  - Vinod Koul <vkoul@kernel.org>

description:
  The QMP PHY controller supports physical layer functionality for a number of
  controllers on Qualcomm chipsets, such as, PCIe, UFS, and USB.

properties:
  compatible:
    enum:
      - qcom,sc8280xp-qmp-gen3x1-pcie-phy
      - qcom,sc8280xp-qmp-gen3x2-pcie-phy
      - qcom,sc8280xp-qmp-gen3x4-pcie-phy

  reg:
    minItems: 1
    maxItems: 2

  clocks:
    maxItems: 6

  clock-names:
    items:
      - const: aux
      - const: cfg_ahb
      - const: ref
      - const: rchng
      - const: pipe
      - const: pipediv2

  power-domains:
    maxItems: 1

  resets:
    maxItems: 1

  reset-names:
    items:
      - const: phy

  vdda-phy-supply: true

  vdda-pll-supply: true

  qcom,4ln-config-sel:
    description: PCIe 4-lane configuration
    $ref: /schemas/types.yaml#/definitions/phandle-array
    items:
      - items:
          - description: phandle of TCSR syscon
          - description: offset of PCIe 4-lane configuration register
          - description: offset of configuration bit for this PHY

  "#clock-cells":
    const: 0

  clock-output-names:
    maxItems: 1

  "#phy-cells":
    const: 0

required:
  - compatible
  - reg
  - clocks
  - clock-names
  - power-domains
  - resets
  - reset-names
  - vdda-phy-supply
  - vdda-pll-supply
  - "#clock-cells"
  - clock-output-names
  - "#phy-cells"

additionalProperties: false

allOf:
  - if:
      properties:
        compatible:
          contains:
            enum:
              - qcom,sc8280xp-qmp-gen3x4-pcie-phy
    then:
      properties:
        reg:
          items:
            - description: port a
            - description: port b
      required:
        - qcom,4ln-config-sel
    else:
      properties:
        reg:
          maxItems: 1

examples:
  - |
    #include <dt-bindings/clock/qcom,gcc-sc8280xp.h>

    pcie2b_phy: phy@1c18000 {
      compatible = "qcom,sc8280xp-qmp-gen3x2-pcie-phy";
      reg = <0x01c18000 0x2000>;

      clocks = <&gcc GCC_PCIE_2B_AUX_CLK>,
               <&gcc GCC_PCIE_2B_CFG_AHB_CLK>,
               <&gcc GCC_PCIE_2A2B_CLKREF_CLK>,
               <&gcc GCC_PCIE2B_PHY_RCHNG_CLK>,
               <&gcc GCC_PCIE_2B_PIPE_CLK>,
               <&gcc GCC_PCIE_2B_PIPEDIV2_CLK>;
      clock-names = "aux", "cfg_ahb", "ref", "rchng",
                    "pipe", "pipediv2";

      power-domains = <&gcc PCIE_2B_GDSC>;

      resets = <&gcc GCC_PCIE_2B_PHY_BCR>;
      reset-names = "phy";

      vdda-phy-supply = <&vreg_l6d>;
      vdda-pll-supply = <&vreg_l4d>;

      #clock-cells = <0>;
      clock-output-names = "pcie_2b_pipe_clk";

      #phy-cells = <0>;
    };

    pcie2a_phy: phy@1c24000 {
      compatible = "qcom,sc8280xp-qmp-gen3x4-pcie-phy";
      reg = <0x01c24000 0x2000>, <0x01c26000 0x2000>;

      clocks = <&gcc GCC_PCIE_2A_AUX_CLK>,
               <&gcc GCC_PCIE_2A_CFG_AHB_CLK>,
               <&gcc GCC_PCIE_2A2B_CLKREF_CLK>,
               <&gcc GCC_PCIE2A_PHY_RCHNG_CLK>,
               <&gcc GCC_PCIE_2A_PIPE_CLK>,
               <&gcc GCC_PCIE_2A_PIPEDIV2_CLK>;
      clock-names = "aux", "cfg_ahb", "ref", "rchng",
                    "pipe", "pipediv2";

      power-domains = <&gcc PCIE_2A_GDSC>;

      resets = <&gcc GCC_PCIE_2A_PHY_BCR>;
      reset-names = "phy";

      vdda-phy-supply = <&vreg_l6d>;
      vdda-pll-supply = <&vreg_l4d>;

      qcom,4ln-config-sel = <&tcsr 0xa044 0>;

      #clock-cells = <0>;
      clock-output-names = "pcie_2a_pipe_clk";

      #phy-cells = <0>;
    };