Kernel-4.18.0-80.el8_k3-dw-mshc

• Hisilicon specific extensions to the Synopsys Designware Mobile
  Storage Host Controller

Read synopsys-dw-mshc.txt for more details

The Synopsys designware mobile storage host controller is used to interface
a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
differences between the core Synopsys dw mshc controller properties described
by synopsys-dw-mshc.txt and the properties used by the Hisilicon specific
extensions to the Synopsys Designware Mobile Storage Host Controller.

Required Properties:

• compatible: should be one of the following.
  • “hisilicon,hi3660-dw-mshc”: for controllers with hi3660 specific extensions.
  • “hisilicon,hi4511-dw-mshc”: for controllers with hi4511 specific extensions.
  • “hisilicon,hi6220-dw-mshc”: for controllers with hi6220 specific extensions.

Optional Properties:

• hisilicon,peripheral-syscon: phandle of syscon used to control peripheral.

Example:

/* for Hi3620 */

/* SoC portion */
dwmmc_0: dwmmc0@fcd03000 {
    compatible = "hisilicon,hi4511-dw-mshc";
    reg = <0xfcd03000 0x1000>;
    interrupts = <0 16 4>;
    #address-cells = <1>;
    #size-cells = <0>;
    clocks = <&mmc_clock HI3620_SD_CIUCLK>, <&clock HI3620_DDRC_PER_CLK>;
    clock-names = "ciu", "biu";
};

/* Board portion */
dwmmc0@fcd03000 {
    vmmc-supply = <&ldo12>;
    fifo-depth = <0x100>;
    pinctrl-names = "default";
    pinctrl-0 = <&sd_pmx_pins &sd_cfg_func1 &sd_cfg_func2>;
    bus-width = <4>;
    disable-wp;
    cd-gpios = <&gpio10 3 0>;
    cap-mmc-highspeed;
    cap-sd-highspeed;
};

/* for Hi6220 */

dwmmc_1: dwmmc1@f723e000 {
    compatible = "hisilicon,hi6220-dw-mshc";
    bus-width = <0x4>;
    disable-wp;
    cap-sd-highspeed;
    sd-uhs-sdr12;
    sd-uhs-sdr25;
    card-detect-delay = <200>;
    hisilicon,peripheral-syscon = <&ao_ctrl>;
    reg = <0x0 0xf723e000 0x0 0x1000>;
    interrupts = <0x0 0x49 0x4>;
    clocks = <&clock_sys HI6220_MMC1_CIUCLK>, <&clock_sys HI6220_MMC1_CLK>;
    clock-names = "ciu", "biu";
    cd-gpios = <&gpio1 0 1>;
    pinctrl-names = "default", "idle";
    pinctrl-0 = <&sd_pmx_func &sd_clk_cfg_func &sd_cfg_func>;
    pinctrl-1 = <&sd_pmx_idle &sd_clk_cfg_idle &sd_cfg_idle>;
    vqmmc-supply = <&ldo7>;
    vmmc-supply = <&ldo10>;
};