Documentation/devicetree/bindings/mmc/litex,mmc.yaml

   1 # SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/mmc/litex,mmc.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: LiteX LiteSDCard device
   8
   9 maintainers:
  10   - Gabriel Somlo <gsomlo@gmail.com>
  11
  12 description: |
  13   LiteSDCard is a small footprint, configurable SDCard core for FPGA based
  14   system on chips.
  15
  16   The hardware source is Open Source and can be found on at
  17   https://github.com/enjoy-digital/litesdcard/.
  18
  19 allOf:
  20   - $ref: mmc-controller.yaml#
  21
  22 properties:
  23   compatible:
  24     const: litex,mmc
  25
  26   reg:
  27     items:
  28       - description: PHY registers
  29       - description: CORE registers
  30       - description: DMA Reader buffer
  31       - description: DMA Writer buffer
  32       - description: IRQ registers
  33     minItems: 4
  34
  35   reg-names:
  36     items:
  37       - const: phy
  38       - const: core
  39       - const: reader
  40       - const: writer
  41       - const: irq
  42     minItems: 4
  43
  44   clocks:
  45     maxItems: 1
  46     description:
  47       Handle to reference clock.
  48
  49   vmmc-supply:
  50     description:
  51       Handle to fixed-voltage supply for the card power.
  52
  53   interrupts:
  54     maxItems: 1
  55
  56 required:
  57   - compatible
  58   - reg
  59   - reg-names
  60   - clocks
  61   - vmmc-supply
  62
  63 additionalProperties: false
  64
  65 examples:
  66   - |
  67     mmc: mmc@12005000 {
  68         compatible = "litex,mmc";
  69         reg = <0x12005000 0x100>,
  70               <0x12003800 0x100>,
  71               <0x12003000 0x100>,
  72               <0x12004800 0x100>,
  73               <0x12004000 0x100>;
  74         reg-names = "phy", "core", "reader", "writer", "irq";
  75         clocks = <&reference_clk>;
  76         vmmc-supply = <&vreg_mmc>;
  77         interrupts = <4>;
  78     };