Re: [PATCH 5/5] SDIO: put active devices into 1-bit mode during suspend

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi David,

   > I couldn't find anything in the SDIO specification (you know the
   > section number?).  Part A2 has a requirement that the controller
   > be placed into 1-bit mode but this doesn't mean that the card has
   > to be.

I think it's part E1 section 8, and does specify that it's necessary
for both host and card.

   > Maybe it's not really a big deal, a single command only costs a
   > few 10s of microseconds anyway.

Yeah, and it's only being sent on a powered-suspend, which so far OLPC
is the only user of -- I'd rather have the next user tell us it isn't
necessary than break it for them by introducing an incorrect quirk.

Thanks,

- Chris.
-- 
Chris Ball   <cjb@xxxxxxxxxx>
One Laptop Per Child
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux