Documentation/devicetree/bindings/mmc/samsung-sdhci.txt

   1 * Samsung's SDHCI Controller device tree bindings
   2
   3 Samsung's SDHCI controller is used as a connectivity interface with external
   4 MMC, SD and eMMC storage mediums. This file documents differences between the
   5 core mmc properties described by mmc.txt and the properties used by the
   6 Samsung implementation of the SDHCI controller.
   7
   8 Required SoC Specific Properties:
   9 - compatible: should be one of the following
  10   - "samsung,s3c6410-sdhci": For controllers compatible with s3c6410 sdhci
  11     controller.
  12   - "samsung,exynos4210-sdhci": For controllers compatible with Exynos4 sdhci
  13     controller.
  14
  15 Required Board Specific Properties:
  16 - pinctrl-0: Should specify pin control groups used for this controller.
  17 - pinctrl-names: Should contain only one value - "default".
  18
  19 Example:
  20         sdhci@12530000 {
  21                 compatible = "samsung,exynos4210-sdhci";
  22                 reg = <0x12530000 0x100>;
  23                 interrupts = <0 75 0>;
  24                 bus-width = <4>;
  25                 cd-gpios = <&gpk2 2 0>;
  26                 pinctrl-names = "default";
  27                 pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus4>;
  28         };
  29
  30         Note: This example shows both SoC specific and board specific properties
  31         in a single device node. The properties can be actually be separated
  32         into SoC specific node and board specific node.