Documentation/devicetree/bindings/mmc/davinci_mmc.txt

   1 * TI Highspeed MMC host controller for DaVinci
   2
   3 The Highspeed MMC Host Controller on TI DaVinci family
   4 provides an interface for MMC, SD and SDIO types of memory cards.
   5
   6 This file documents the properties used by the davinci_mmc driver.
   7
   8 Required properties:
   9 - compatible:
  10  Should be "ti,da830-mmc": for da830, da850, dm365
  11  Should be "ti,dm355-mmc": for dm355, dm644x
  12
  13 Optional properties:
  14 - bus-width: Number of data lines, can be <1>, <4>, or <8>, default <1>
  15 - max-frequency: Maximum operating clock frequency, default 25MHz.
  16 - dmas: List of DMA specifiers with the controller specific format
  17         as described in the generic DMA client binding. A tx and rx
  18         specifier is required.
  19 - dma-names: RX and TX  DMA request names. These strings correspond
  20         1:1 with the DMA specifiers listed in dmas.
  21
  22 Example:
  23 mmc0: mmc@1c40000 {
  24         compatible = "ti,da830-mmc",
  25         reg = <0x40000 0x1000>;
  26         interrupts = <16>;
  27         status = "okay";
  28         bus-width = <4>;
  29         max-frequency = <50000000>;
  30         dmas = <&edma 16
  31                 &edma 17>;
  32         dma-names = "rx", "tx";
  33 };