SGTL5000 misc

Fabio Estevam festevam at gmail.com
Wed Feb 3 06:23:16 PST 2016


On Wed, Feb 3, 2016 at 11:42 AM, Erik Friesen <friesendrywall at gmail.com> wrote:
> First post on the list here..
>
> I have been working with an embeddedarm ts4900 and built a baseboard
> that uses the sgtl5000.  I also have worked with the RiotBoard, which
> uses the same chip, both using the i.mx6 arm.  I find that
> occasionally the sgtl5000 is resetting, and there is no way to bring
> it back online.  As near as I can tell, the i2c bus comes back alive,
> for example alsamixer communicates fine, coms happen on the i2c bus
> per scope.  However, its obvious the chip never got re initialized by
> how it acts.
>
> I know the thing shouldn't reset, that is the primary problem, but I
> still want some backup method.  Its probably due to ground bounce from
> a non earth grounded setup.  It could be that using the external
> regulator will help, we will see.
>
> Is there a suggestion on a way the sgtl5000.c could be extended to
> support some sort of re init routine?
>
> I am using the embeddedarm repo as a base.

Which kernel version do you use?



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