Re: [PATCH v2 1/2] omap3: Provide means for changing CSI2 PHY configuration

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Hi Kevin,

Thanks for the comments!

On Tue, Oct 09, 2012 at 01:50:04PM -0700, Kevin Hilman wrote:
> Hi Sakari,
> 
> Sakari Ailus <sakari.ailus@xxxxxx> writes:
> 
> > The OMAP 3630 has configuration how the ISP CSI-2 PHY pins are connected to
> > the actual CSI-2 receivers outside the ISP itself. Allow changing this
> > configuration from the ISP driver.
> >
> > Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxx>
> 
> These control module registers (CSIRXFE, CAMERA_PHY_CTRL) are in the
> CORE powerdomain, so they will be lost during off-mode transitions.  So,
> I suspect you'll also want to add them to the save/restore functions in
> control.c in order for this to work across off-mode transitions.

I've got another patch that implements this in the ISP driver instead.

<URL:http://www.spinics.net/lists/linux-media/msg54781.html>

The ISP also can't wake up the MPU from the off mode, so I don't think
losing the register contents is necessarily an issue. The registers will be
written to a new value whenever streaming is started. Perhaps adding a note
about that would be worthwhile.

Regards,

-- 
Sakari Ailus
e-mail: sakari.ailus@xxxxxx	XMPP: sailus@xxxxxxxxxxxxxx
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