b8653ea97957d003eb3c039eb2c876799eadcac9
[sfrench/cifs-2.6.git] / 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,hi4511-dw-mshc": for controllers with hi4511 specific extentions.
16
17 Example:
18
19         /* for Hi3620 */
20
21         /* SoC portion */
22         dwmmc_0: dwmmc0@fcd03000 {
23                 compatible = "hisilicon,hi4511-dw-mshc";
24                 reg = <0xfcd03000 0x1000>;
25                 interrupts = <0 16 4>;
26                 #address-cells = <1>;
27                 #size-cells = <0>;
28                 clocks = <&mmc_clock HI3620_SD_CIUCLK>, <&clock HI3620_DDRC_PER_CLK>;
29                 clock-names = "ciu", "biu";
30         };
31
32         /* Board portion */
33         dwmmc0@fcd03000 {
34                 num-slots = <1>;
35                 vmmc-supply = <&ldo12>;
36                 fifo-depth = <0x100>;
37                 supports-highspeed;
38                 pinctrl-names = "default";
39                 pinctrl-0 = <&sd_pmx_pins &sd_cfg_func1 &sd_cfg_func2>;
40                 slot@0 {
41                         reg = <0>;
42                         bus-width = <4>;
43                         disable-wp;
44                         cd-gpios = <&gpio10 3 0>;
45                 };
46         };