xref: /OK3568_Linux_fs/u-boot/doc/device-tree-bindings/mmc/msm_sdhci.txt (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593SmuzhiyunQualcomm Snapdragon SDHCI controller
2*4882a593Smuzhiyun
3*4882a593SmuzhiyunRequired properties:
4*4882a593Smuzhiyun- compatible : "qcom,sdhci-msm-v4"
5*4882a593Smuzhiyun- reg: Base address and length of registers:
6*4882a593Smuzhiyun	- Host controller registers (SDHCI)
7*4882a593Smuzhiyun	- SD Core registers
8*4882a593Smuzhiyun- clock: interface clock (must accept SD bus clock as a frequency)
9*4882a593Smuzhiyun
10*4882a593SmuzhiyunOptional properties:
11*4882a593Smuzhiyun- index: If there is more than one controller - controller index (required
12*4882a593Smuzhiyun	by generic SDHCI code).
13*4882a593Smuzhiyun- bus_width: Width of SD/eMMC bus (default 4)
14*4882a593Smuzhiyun- clock-frequency: Frequency of SD/eMMC bus (default 400 kHz)
15*4882a593Smuzhiyun
16*4882a593SmuzhiyunExample:
17*4882a593Smuzhiyun
18*4882a593Smuzhiyunsdhci@07864000 {
19*4882a593Smuzhiyun	compatible = "qcom,sdhci-msm-v4";
20*4882a593Smuzhiyun	reg = <0x7864900 0x11c 0x7864000 0x800>;
21*4882a593Smuzhiyun	index = <0x1>;
22*4882a593Smuzhiyun	bus-width = <0x4>;
23*4882a593Smuzhiyun	clock = <&clkc 1>;
24*4882a593Smuzhiyun	clock-frequency = <200000000>;
25*4882a593Smuzhiyun};
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