xref: /openbmc/linux/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml (revision 84e85359)

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/mmc/synopsys-dw-mshc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Synopsys Designware Mobile Storage Host Controller

maintainers:
  - Ulf Hansson <ulf.hansson@linaro.org>

# Everything else is described in the common file
properties:
  compatible:
    enum:
      - altr,socfpga-dw-mshc
      - img,pistachio-dw-mshc
      - snps,dw-mshc

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    minItems: 2
    maxItems: 2
    description:
      Handle to "biu" and "ciu" clocks for the
      bus interface unit clock and the card interface unit clock.

  clock-names:
    items:
      - const: biu
      - const: ciu

  altr,sysmgr-syscon:
    $ref: /schemas/types.yaml#/definitions/phandle-array
    items:
      - items:
          - description: phandle to the sysmgr node
          - description: register offset that controls the SDMMC clock phase
          - description: register shift for the smplsel(drive in) setting
    description:
      This property is optional. Contains the phandle to System Manager block
      that contains the SDMMC clock-phase control register. The first value is
      the pointer to the sysmgr, the 2nd value is the register offset for the
      SDMMC clock phase register, and the 3rd value is the bit shift for the
      smplsel(drive in) setting.

allOf:
  - $ref: synopsys-dw-mshc-common.yaml#

  - if:
      properties:
        compatible:
          contains:
            const: altr,socfpga-dw-mshc
    then:
      properties:
        altr,sysmgr-syscon: true
    else:
      properties:
        altr,sysmgr-syscon: false

required:
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names

unevaluatedProperties: false

examples:
  - |
    mmc@12200000 {
      compatible = "snps,dw-mshc";
      reg = <0x12200000 0x1000>;
      interrupts = <0 75 0>;
      clocks = <&clock 351>, <&clock 132>;
      clock-names = "biu", "ciu";
      dmas = <&pdma 12>;
      dma-names = "rx-tx";
      resets = <&rst 20>;
      reset-names = "reset";
      vmmc-supply = <&buck8>;
      #address-cells = <1>;
      #size-cells = <0>;
      broken-cd;
      bus-width = <8>;
      cap-mmc-highspeed;
      cap-sd-highspeed;
      card-detect-delay = <200>;
      max-frequency = <200000000>;
      clock-frequency = <400000000>;
      data-addr = <0x200>;
      fifo-depth = <0x80>;
      fifo-watermark-aligned;
    };