On Friday 21 February 2014 17:31:27 Alistair Popple wrote:

 
+config MMC_SDHCI_OF_476GTR
+	tristate "SDHCI OF support for the IBM PPC476GTR SoC"
+	depends on MMC_SDHCI_PLTFM
+	depends on PPC_OF
+	help
+	  This selects the Secure Digital Host Controller Interface (SDHCI)
+	  found on the PPC476GTR SoC.
+
+	  If you have a controller with this interface, say Y or M here.
+
+	  If unsure, say N.

Your driver doesn't actually do anything beyond what is in the common
sdhci-pltfm.c infrastructure. IMHO you really shoulnd't need a SoC
specific abstraction for it at all and instead add a generic
platform driver registration into sdhci-pltfm.c. I'd suggest
you use "generic-sdhci" (similar to what we do for usb-ohci and usb-ehci
now) as the compatible string and change your device tree to claim
compatibility with that and your soc-specific string.

	Arnd