by mmc.txt and the properties that represent the IPROC SDHCI controller.
Required properties:
-- compatible : Should be "brcm,sdhci-iproc-cygnus".
+- compatible : Should be one of the following
+ "brcm,bcm2835-sdhci"
+ "brcm,sdhci-iproc-cygnus"
+
- clocks : The clock feeding the SDHCI controller.
Optional properties: