SDIO on AT91SAMPM9263

[Dan Williams]

On Wed, 2009-11-04 at 12:27 +0100, Bart Cerneels wrote:
> Hi all
> 
> I've hit a problem with libertas and a marvell sd8385 using FW version
> 5.0.11p0 and 5.0.20p0.
> 
> It's the same timeout issues like [1] but with completely difference
> processor architecture and MMC host controller.
> While I suspected the host controller to be the problem, this makes me
> think its the libertas-sdio driver again.
> 
> So what is the most likely culprit here firmware (tried 2 versions),
> libertas-core, libertas-sdio or perhaps it's the MMC host screwing
> everything up.
> 
> I'm not really experience with SD but I absolutely have to fix this
> issue this month so if you can help me you can expect a patch if it
> turns out to be a libertas bug.

Does the SDHC have any quirks or errata with respect to DMA, block size,
multi-block transfers, or interrupts?

Dan