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* 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,hi4511-dw-mshc": for controllers with hi4511 specific extensions.
Optional Properties:
* "hisilicon,disable-boot"
- Hit the disable_boot register before reseting the mmc controller and
enabling the clocks. It's required on Hisilicon Hi6220 SoC when the mmc
controller was accessed by the bootloader.
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 {
num-slots = <1>;
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;
};