Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt

   1 * Hisilicon specific extensions to the Synopsys Designware Mobile
   2   Storage Host Controller
   3
   4 Read synopsys-dw-mshc.txt for more details
   5
   6 The Synopsys designware mobile storage host controller is used to interface
   7 a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
   8 differences between the core Synopsys dw mshc controller properties described
   9 by synopsys-dw-mshc.txt and the properties used by the Hisilicon specific
  10 extensions to the Synopsys Designware Mobile Storage Host Controller.
  11
  12 Required Properties:
  13
  14 * compatible: should be one of the following.
  15   - "hisilicon,hi4511-dw-mshc": for controllers with hi4511 specific extensions.
  16
  17 Example:
  18
  19         /* for Hi3620 */
  20
  21         /* SoC portion */
  22         dwmmc_0: dwmmc0@fcd03000 {
  23                 compatible = "hisilicon,hi4511-dw-mshc";
  24                 reg = <0xfcd03000 0x1000>;
  25                 interrupts = <0 16 4>;
  26                 #address-cells = <1>;
  27                 #size-cells = <0>;
  28                 clocks = <&mmc_clock HI3620_SD_CIUCLK>, <&clock HI3620_DDRC_PER_CLK>;
  29                 clock-names = "ciu", "biu";
  30         };
  31
  32         /* Board portion */
  33         dwmmc0@fcd03000 {
  34                 num-slots = <1>;
  35                 vmmc-supply = <&ldo12>;
  36                 fifo-depth = <0x100>;
  37                 supports-highspeed;
  38                 pinctrl-names = "default";
  39                 pinctrl-0 = <&sd_pmx_pins &sd_cfg_func1 &sd_cfg_func2>;
  40                 slot@0 {
  41                         reg = <0>;
  42                         bus-width = <4>;
  43                         disable-wp;
  44                         cd-gpios = <&gpio10 3 0>;
  45                 };
  46         };