xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/phy/hisilicon,phy-hi3670-pcie.yaml

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/phy/hisilicon,phy-hi3670-pcie.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: HiSilicon Kirin970 PCIe PHY

maintainers:
  - Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

description: |+
  Bindings for PCIe PHY on HiSilicon Kirin 970.

properties:
  compatible:
    const: hisilicon,hi970-pcie-phy

  "#phy-cells":
    const: 0

  reg:
    maxItems: 1
    description: PHY Control registers

  phy-supply:
    description: The PCIe PHY power supply

  clocks:
    items:
      - description: PCIe PHY clock
      - description: PCIe AUX clock
      - description: PCIe APB PHY clock
      - description: PCIe APB SYS clock
      - description: PCIe ACLK clock

  clock-names:
    items:
      - const: phy_ref
      - const: aux
      - const: apb_phy
      - const: apb_sys
      - const: aclk

  hisilicon,eye-diagram-param:
    $ref: /schemas/types.yaml#/definitions/uint32-array
    description: Eye diagram for phy.

required:
  - "#phy-cells"
  - compatible
  - reg
  - clocks
  - clock-names
  - hisilicon,eye-diagram-param
  - phy-supply

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/hi3670-clock.h>

    soc {
      #address-cells = <2>;
      #size-cells = <2>;
      pcie_phy: pcie-phy@fc000000 {
        compatible = "hisilicon,hi970-pcie-phy";
        reg = <0x0 0xfc000000 0x0 0x80000>;
        #phy-cells = <0>;
        phy-supply = <&ldo33>;
        clocks = <&crg_ctrl HI3670_CLK_GATE_PCIEPHY_REF>,
                 <&crg_ctrl HI3670_CLK_GATE_PCIEAUX>,
                 <&crg_ctrl HI3670_PCLK_GATE_PCIE_PHY>,
                 <&crg_ctrl HI3670_PCLK_GATE_PCIE_SYS>,
                 <&crg_ctrl HI3670_ACLK_GATE_PCIE>;
        clock-names = "phy_ref", "aux",
                      "apb_phy", "apb_sys", "aclk";
        hisilicon,eye-diagram-param = <0xffffffff 0xffffffff
                                       0xffffffff 0xffffffff 0xffffffff>;
      };
    };