Documentation/devicetree/bindings/mmc/hi3798cv200-dw-mshc.txt

   1 * Hisilicon Hi3798CV200 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 Hi3798CV200
  10 specific extensions to the Synopsys Designware Mobile Storage Host Controller.
  11
  12 Required Properties:
  13 - compatible: Should contain "hisilicon,hi3798cv200-dw-mshc".
  14 - clocks: A list of phandle + clock-specifier pairs for the clocks listed
  15   in clock-names.
  16 - clock-names: Should contain the following:
  17         "ciu" - The ciu clock described in synopsys-dw-mshc.txt.
  18         "biu" - The biu clock described in synopsys-dw-mshc.txt.
  19         "ciu-sample" - Hi3798CV200 extended phase clock for ciu sampling.
  20         "ciu-drive"  - Hi3798CV200 extended phase clock for ciu driving.
  21
  22 Example:
  23
  24         emmc: mmc@9830000 {
  25                 compatible = "hisilicon,hi3798cv200-dw-mshc";
  26                 reg = <0x9830000 0x10000>;
  27                 interrupts = <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
  28                 clocks = <&crg HISTB_MMC_CIU_CLK>,
  29                          <&crg HISTB_MMC_BIU_CLK>,
  30                          <&crg HISTB_MMC_SAMPLE_CLK>,
  31                          <&crg HISTB_MMC_DRV_CLK>;
  32                 clock-names = "ciu", "biu", "ciu-sample", "ciu-drive";
  33                 fifo-depth = <256>;
  34                 clock-frequency = <200000000>;
  35                 cap-mmc-highspeed;
  36                 mmc-ddr-1_8v;
  37                 mmc-hs200-1_8v;
  38                 non-removable;
  39                 bus-width = <8>;
  40         };