public inbox for linux-omap@vger.kernel.org
 help / color / mirror / Atom feed
* [PATCH v4 0/1] Put the OMAP2 SPI CS in inactive state when returning from suspend
@ 2010-11-12 23:44 Gregory CLEMENT
  2010-11-13  1:07 ` Grant Likely
  0 siblings, 1 reply; 2+ messages in thread
From: Gregory CLEMENT @ 2010-11-12 23:44 UTC (permalink / raw)
  To: linux-omap, spi-devel-general; +Cc: David Brownell, Grant Likely, Kevin Hilman

We notice that when system wake up from OFF mode, then CS is in inactive 
state until the first SPI transfer.
For our design it lead to some conflict on this I/O.
Inactive state for CS when there is no transfer should be the correct 
behavior: this is the purpose of these patches.

* Change from v3:
Patch clean-up according to Kevin Hilman and checkpatch.
Now force CS to be in inactive state only if it was inactive when it was 
suspended.

Gregory CLEMENT (1):
   OMAP2: Spi: Force CS to be in inactive state after off-mode
     transition

  drivers/spi/omap2_mcspi.c |   35 +++++++++++++++++++++++++++++++++++
  1 files changed, 35 insertions(+), 0 deletions(-)


^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: [PATCH v4 0/1] Put the OMAP2 SPI CS in inactive state when returning from suspend
  2010-11-12 23:44 [PATCH v4 0/1] Put the OMAP2 SPI CS in inactive state when returning from suspend Gregory CLEMENT
@ 2010-11-13  1:07 ` Grant Likely
  0 siblings, 0 replies; 2+ messages in thread
From: Grant Likely @ 2010-11-13  1:07 UTC (permalink / raw)
  To: Gregory CLEMENT
  Cc: linux-omap, spi-devel-general, David Brownell, Kevin Hilman

On Fri, Nov 12, 2010 at 4:44 PM, Gregory CLEMENT
<gregory.clement@free-electrons.com> wrote:
> We notice that when system wake up from OFF mode, then CS is in inactive
> state until the first SPI transfer.
> For our design it lead to some conflict on this I/O.
> Inactive state for CS when there is no transfer should be the correct
> behavior: this is the purpose of these patches.
>
> * Change from v3:
> Patch clean-up according to Kevin Hilman and checkpatch.
> Now force CS to be in inactive state only if it was inactive when it was
> suspended.
>
> Gregory CLEMENT (1):
>  OMAP2: Spi: Force CS to be in inactive state after off-mode
>    transition
>
>  drivers/spi/omap2_mcspi.c |   35 +++++++++++++++++++++++++++++++++++
>  1 files changed, 35 insertions(+), 0 deletions(-)

Hi Gregory,

If you've only got one patch then please put all the explanation text
into the patch description.  Using a cover letter like this is only
useful when describing the context for a series (more than 1) of
patches.  Also, revision history should always be in patch
description, regardless of whether or not there is a cover letter (at
least for the subsystems that I maintain.  Otherwise, it is too easy
for vital information to get separated from the patch.

Thanks,
g.
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2010-11-13  1:08 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-11-12 23:44 [PATCH v4 0/1] Put the OMAP2 SPI CS in inactive state when returning from suspend Gregory CLEMENT
2010-11-13  1:07 ` Grant Likely

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox