xref: /OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/mmc/zx-dw-mshc.txt (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun* ZTE specific extensions to the Synopsys Designware Mobile Storage
2*4882a593Smuzhiyun  Host Controller
3*4882a593Smuzhiyun
4*4882a593SmuzhiyunThe Synopsys designware mobile storage host controller is used to interface
5*4882a593Smuzhiyuna SoC with storage medium such as eMMC or SD/MMC cards. This file documents
6*4882a593Smuzhiyundifferences between the core Synopsys dw mshc controller properties described
7*4882a593Smuzhiyunby synopsys-dw-mshc.txt and the properties used by the ZTE specific
8*4882a593Smuzhiyunextensions to the Synopsys Designware Mobile Storage Host Controller.
9*4882a593Smuzhiyun
10*4882a593SmuzhiyunRequired Properties:
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun* compatible: should be
13*4882a593Smuzhiyun	- "zte,zx296718-dw-mshc": for ZX SoCs
14*4882a593Smuzhiyun
15*4882a593SmuzhiyunExample:
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun	mmc1: mmc@1110000 {
18*4882a593Smuzhiyun		compatible = "zte,zx296718-dw-mshc";
19*4882a593Smuzhiyun		reg = <0x01110000 0x1000>;
20*4882a593Smuzhiyun		interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
21*4882a593Smuzhiyun		fifo-depth = <32>;
22*4882a593Smuzhiyun		data-addr = <0x200>;
23*4882a593Smuzhiyun		fifo-watermark-aligned;
24*4882a593Smuzhiyun		bus-width = <4>;
25*4882a593Smuzhiyun		clock-frequency = <50000000>;
26*4882a593Smuzhiyun		clocks = <&topcrm SD0_AHB>, <&topcrm SD0_WCLK>;
27*4882a593Smuzhiyun		clock-names = "biu", "ciu";
28*4882a593Smuzhiyun		max-frequency = <50000000>;
29*4882a593Smuzhiyun		cap-sdio-irq;
30*4882a593Smuzhiyun		cap-sd-highspeed;
31*4882a593Smuzhiyun	};
32