lkml.org 
[lkml]   [2006]   [Oct]   [16]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateMon, 16 Oct 2006 08:34:20 +0200
FromPierre Ossman <>
SubjectRe: [PATCH] MMC: Select only one voltage bit in OCR response
Timo Teras wrote:
> I see. But if we do send an OCR with an unsupported bit set, the card will
> go to inactive state and is unusable. This problem is masked on controllers
> with only 3.3V support, but I'm working with a controller supporting several
> different voltages.
>
> For example, I have a card giving an OCR reply of 0x0ff80080. The current
> code will reply to this with 0x00000180 which is clearly incorrect.
>
> Maybe something like "ocr &= 3 << bit;" would be more approriate?
> 

Russell? Comments? Do you still have the offending card?

-- 
     -- Pierre Ossman

  Linux kernel, MMC maintainer        http://www.kernel.org
  PulseAudio, core developer          http://pulseaudio.org
  rdesktop, core developer          http://www.rdesktop.org
  OLPC, developer                     http://www.laptop.org

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-10-16 06:37    [from the cache]
©2003-2008