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* Hisilicon specific extensions to the Synopsis Designware Mobile
Storage Host Controller
Read synopsis-dw-mshc.txt for more details
The Synopsis 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 Synopsis dw mshc controller properties described
by synopsis-dw-mshc.txt and the properties used by the Hisilicon specific
extensions to the Synopsis Designware Mobile Storage Host Controller.
Required Properties:
* compatible: should be
- "hisilicon,hi4511-dw-mshc": for controllers with hi4511
specific extentions.
* vmmc-supply: should be vmmc used in dwmmc
* fifo-depth: should be provided if register can not provide correct value
* clken-reg: should be clock enable register and offset
* drv-sel-reg: should be driver delay select register and offset
* sam-sel-reg: should be sample delay select register and offset
* div-reg: should be divider register and offset
Example:
The MSHC controller node can be split into two portions, SoC specific and
board specific portions as listed below.
dwmmc_0: dwmmc0@fcd03000 {
compatible = "hisilicon,hi4511-dw-mshc";
reg = <0xfcd03000 0x1000>;
interrupts = <0 16 4>;
#address-cells = <1>;
#size-cells = <0>;
clocks = <&clk_sd>, <&clk_ddrc_per>;
clock-names = "ciu", "biu";
clken-reg = <0x1f8 0>;
drv-sel-reg = <0x1f8 4>;
sam-sel-reg = <0x1f8 8>;
div-reg = <0x1f8 1>;
};
dwmmc0@fcd03000 {
num-slots = <1>;
vmmc-supply = <&ldo12>;
fifo-depth = <0x100>;
supports-highspeed;
pinctrl-names = "default";
pinctrl-0 = <&sd_pmx_pins &sd_cfg_func1 &sd_cfg_func2>;
cd-gpio = <&gpio10 3 0>;
slot@0 {
reg = <0>;
bus-width = <4>;
};
};
PCTRL:
Required Properties:
* compatible: should be
- "hisilicon,pctrl": Peripheral control
Example:
pctrl: pctrl@fca09000 {
compatible = "hisilicon,pctrl";
reg = <0xfca09000 0x1000>;
};