xref: /freebsd/sys/contrib/device-tree/Bindings/mmc/litex,mmc.yaml (revision c9ccf3a32da427475985b85d7df023ccfb138c27)

# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/mmc/litex,mmc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: LiteX LiteSDCard device

maintainers:
  - Gabriel Somlo <gsomlo@gmail.com>

description: |
  LiteSDCard is a small footprint, configurable SDCard core for FPGA based
  system on chips.

  The hardware source is Open Source and can be found on at
  https://github.com/enjoy-digital/litesdcard/.

allOf:
  - $ref: mmc-controller.yaml#

properties:
  compatible:
    const: litex,mmc

  reg:
    items:
      - description: PHY registers
      - description: CORE registers
      - description: DMA Reader buffer
      - description: DMA Writer buffer
      - description: IRQ registers
    minItems: 4

  reg-names:
    items:
      - const: phy
      - const: core
      - const: reader
      - const: writer
      - const: irq
    minItems: 4

  clocks:
    maxItems: 1
    description:
      Handle to reference clock.

  vmmc-supply:
    description:
      Handle to fixed-voltage supply for the card power.

  interrupts:
    maxItems: 1

required:
  - compatible
  - reg
  - reg-names
  - clocks
  - vmmc-supply

additionalProperties: false

examples:
  - |
    mmc: mmc@12005000 {
        compatible = "litex,mmc";
        reg = <0x12005000 0x100>,
              <0x12003800 0x100>,
              <0x12003000 0x100>,
              <0x12004800 0x100>,
              <0x12004000 0x100>;
        reg-names = "phy", "core", "reader", "writer", "irq";
        clocks = <&reference_clk>;
        vmmc-supply = <&vreg_mmc>;
        interrupts = <4>;
    };