cavium-mmc.txt

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    1 * Cavium Octeon & ThunderX MMC controller
    2 
    3 The highspeed MMC host controller on Caviums SoCs provides an interface
    4 for MMC and SD types of memory cards.
    5 
    6 Supported maximum speeds are the ones of the eMMC standard 4.41 as well
    7 as the speed of SD standard 4.0. Only 3.3 Volt is supported.
    8 
    9 Required properties:
   10  - compatible : should be one of:
   11    cavium,octeon-6130-mmc
   12    cavium,octeon-7890-mmc
   13    cavium,thunder-8190-mmc
   14    cavium,thunder-8390-mmc
   15    mmc-slot
   16  - reg : mmc controller base registers
   17  - clocks : phandle
   18 
   19 Optional properties:
   20  - for cd, bus-width and additional generic mmc parameters
   21    please refer to mmc.txt within this directory
   22  - cavium,cmd-clk-skew : number of coprocessor clocks before sampling command
   23  - cavium,dat-clk-skew : number of coprocessor clocks before sampling data
   24 
   25 Deprecated properties:
   26 - spi-max-frequency : use max-frequency instead
   27 - cavium,bus-max-width : use bus-width instead
   28 - power-gpios : use vmmc-supply instead
   29 - cavium,octeon-6130-mmc-slot : use mmc-slot instead
   30 
   31 Examples:
   32         mmc_1_4: mmc@1,4 {
   33                 compatible = "cavium,thunder-8390-mmc";
   34                 reg = <0x0c00 0 0 0 0>; /* DEVFN = 0x0c (1:4) */
   35                 #address-cells = <1>;
   36                 #size-cells = <0>;
   37                 clocks = <&sclk>;
   38 
   39                 mmc-slot@0 {
   40                         compatible = "mmc-slot";
   41                         reg = <0>;
   42                         vmmc-supply = <&mmc_supply_3v3>;
   43                         max-frequency = <42000000>;
   44                         bus-width = <4>;
   45                         cap-sd-highspeed;
   46                 };
   47 
   48                 mmc-slot@1 {
   49                         compatible = "mmc-slot";
   50                         reg = <1>;
   51                         vmmc-supply = <&mmc_supply_3v3>;
   52                         max-frequency = <42000000>;
   53                         bus-width = <8>;
   54                         cap-mmc-highspeed;
   55                         non-removable;
   56                 };
   57         };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/mmc/cavium-mmc.txt

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sys/contrib/device-tree/Bindings/mmc/cavium-mmc.txt