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,hi3660-dw-mshc": for controllers with hi3660 specific extensions.
  16   - "hisilicon,hi4511-dw-mshc": for controllers with hi4511 specific extensions.
  17   - "hisilicon,hi6220-dw-mshc": for controllers with hi6220 specific extensions.
  18
  19 Optional Properties:
  20 - hisilicon,peripheral-syscon: phandle of syscon used to control peripheral.
  21
  22 Example:
  23
  24         /* for Hi3620 */
  25
  26         /* SoC portion */
  27         dwmmc_0: dwmmc0@fcd03000 {
  28                 compatible = "hisilicon,hi4511-dw-mshc";
  29                 reg = <0xfcd03000 0x1000>;
  30                 interrupts = <0 16 4>;
  31                 #address-cells = <1>;
  32                 #size-cells = <0>;
  33                 clocks = <&mmc_clock HI3620_SD_CIUCLK>, <&clock HI3620_DDRC_PER_CLK>;
  34                 clock-names = "ciu", "biu";
  35         };
  36
  37         /* Board portion */
  38         dwmmc0@fcd03000 {
  39                 vmmc-supply = <&ldo12>;
  40                 fifo-depth = <0x100>;
  41                 pinctrl-names = "default";
  42                 pinctrl-0 = <&sd_pmx_pins &sd_cfg_func1 &sd_cfg_func2>;
  43                 bus-width = <4>;
  44                 disable-wp;
  45                 cd-gpios = <&gpio10 3 0>;
  46                 cap-mmc-highspeed;
  47                 cap-sd-highspeed;
  48         };
  49
  50         /* for Hi6220 */
  51
  52         dwmmc_1: dwmmc1@f723e000 {
  53                 compatible = "hisilicon,hi6220-dw-mshc";
  54                 bus-width = <0x4>;
  55                 disable-wp;
  56                 cap-sd-highspeed;
  57                 sd-uhs-sdr12;
  58                 sd-uhs-sdr25;
  59                 card-detect-delay = <200>;
  60                 hisilicon,peripheral-syscon = <&ao_ctrl>;
  61                 reg = <0x0 0xf723e000 0x0 0x1000>;
  62                 interrupts = <0x0 0x49 0x4>;
  63                 clocks = <&clock_sys HI6220_MMC1_CIUCLK>, <&clock_sys HI6220_MMC1_CLK>;
  64                 clock-names = "ciu", "biu";
  65                 cd-gpios = <&gpio1 0 1>;
  66                 pinctrl-names = "default", "idle";
  67                 pinctrl-0 = <&sd_pmx_func &sd_clk_cfg_func &sd_cfg_func>;
  68                 pinctrl-1 = <&sd_pmx_idle &sd_clk_cfg_idle &sd_cfg_idle>;
  69                 vqmmc-supply = <&ldo7>;
  70                 vmmc-supply = <&ldo10>;
  71         };