On Jan 8, 2008 3:49 PM, Pierre Ossman <[EMAIL PROTECTED]> wrote: > On Tue, 8 Jan 2008 14:40:49 -0500 > Mike Frysinger <[EMAIL PROTECTED]> wrote: > > i dont understand what's confusing. the Blackfin on chip host controller > > only > > supports 1-bit MMC, but it supports 4-bit SD/SDIO. this is a fact. while > > it > > may be a stupid decision, it is what it is, and i need the framework made > > more flexible in order to get the Blackfin driver merged cleanly. we do > > software for hardware, we dont do hardware. > > Well, since I've seen no _hardware_ differences between 4-bit MMC and 4-bit > SD, "support" in this case must me "vendor will guarantee it works". And that > is not the kind of "support" that needs a distinction in the code.
regardless of where the limitation is, the change is necessary. however you wish to classify the issue, it doesnt matter to me. the Blackfin controller needs to declare the following capabilities: - 1-bit MMC - 1-bit SD / 4-bit SD - 1-bit SDIO / 4-bit SDIO the existing framework is not flexible enough to account for this, thus the patch posted. > So, again, if you feel that there is a hardware difference between 4-bit MMC > and 4-bit SD then please elaborate as it is my understanding that they are > identical. you may be 100% correct, i have no idea, i'm not really familiar with MMC/SD/SDIO at all. -mike -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
