xref: /openbmc/linux/Documentation/devicetree/bindings/phy/mediatek,ufs-phy.yaml (revision 84e85359)

# 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,ufs-phy.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: MediaTek Universal Flash Storage (UFS) M-PHY

maintainers:
  - Stanley Chu <stanley.chu@mediatek.com>
  - Chunfeng Yun <chunfeng.yun@mediatek.com>

description: |
  UFS M-PHY nodes are defined to describe on-chip UFS M-PHY hardware macro.
  Each UFS M-PHY node should have its own node.
  To bind UFS M-PHY with UFS host controller, the controller node should
  contain a phandle reference to UFS M-PHY node.

properties:
  $nodename:
    pattern: "^ufs-phy@[0-9a-f]+$"

  compatible:
    oneOf:
      - items:
          - enum:
              - mediatek,mt8195-ufsphy
          - const: mediatek,mt8183-ufsphy
      - const: mediatek,mt8183-ufsphy

  reg:
    maxItems: 1

  clocks:
    items:
      - description: Unipro core control clock.
      - description: M-PHY core control clock.

  clock-names:
    items:
      - const: unipro
      - const: mp

  "#phy-cells":
    const: 0

required:
  - compatible
  - reg
  - "#phy-cells"
  - clocks
  - clock-names

additionalProperties: false

examples:
  - |
    #include <dt-bindings/clock/mt8183-clk.h>
    ufsphy: ufs-phy@11fa0000 {
        compatible = "mediatek,mt8183-ufsphy";
        reg = <0x11fa0000 0xc000>;
        clocks = <&infracfg CLK_INFRA_UNIPRO_SCK>,
                 <&infracfg CLK_INFRA_UFS_MP_SAP_BCLK>;
        clock-names = "unipro", "mp";
        #phy-cells = <0>;
    };

...