Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt

   1 * NVIDIA Tegra Secure Digital Host Controller
   2
   3 This controller on Tegra family SoCs provides an interface for MMC, SD,
   4 and SDIO types of memory cards.
   5
   6 This file documents differences between the core properties described
   7 by mmc.txt and the properties used by the sdhci-tegra driver.
   8
   9 Required properties:
  10 - compatible : For Tegra20, must contain "nvidia,tegra20-sdhci".
  11   For Tegra30, must contain "nvidia,tegra30-sdhci".  For Tegra114,
  12   must contain "nvidia,tegra114-sdhci".  For Tegra124, must contain
  13   "nvidia,tegra124-sdhci".  Otherwise, must contain "nvidia,<chip>-sdhci",
  14   plus one of the above, where <chip> is tegra132 or tegra210.
  15 - clocks : Must contain one entry, for the module clock.
  16   See ../clocks/clock-bindings.txt for details.
  17 - resets : Must contain an entry for each entry in reset-names.
  18   See ../reset/reset.txt for details.
  19 - reset-names : Must include the following entries:
  20   - sdhci
  21
  22 Optional properties:
  23 - power-gpios : Specify GPIOs for power control
  24
  25 Example:
  26
  27 sdhci@c8000200 {
  28         compatible = "nvidia,tegra20-sdhci";
  29         reg = <0xc8000200 0x200>;
  30         interrupts = <47>;
  31         clocks = <&tegra_car 14>;
  32         resets = <&tegra_car 14>;
  33         reset-names = "sdhci";
  34         cd-gpios = <&gpio 69 0>; /* gpio PI5 */
  35         wp-gpios = <&gpio 57 0>; /* gpio PH1 */
  36         power-gpios = <&gpio 155 0>; /* gpio PT3 */
  37         bus-width = <8>;
  38 };