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     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         };
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