SDIO multiplexing
Daniel Willmann
daniel at openmoko.org
Thu May 1 23:09:07 CEST 2008
On Thu, 01 May 2008 19:13:24 +0100
Andy Green <andy at openmoko.com> wrote:
> Well it's not that bad at all. Glamo SD works by setting up the
> transaction to the card, and then Linux goes and does something else
> until it gets an interrupt from the Glamo. Only then it pulls the
> bulk data out of Glamo RAM. So during the interrupt the CPU pulls SD
> data; the rest of the time, including while it waits for completion,
> it can do the graphics side.
Still scrolling slows down to a crawl if you copy something from/to SD.
Regards,
Daniel Willmann
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