On Wed, Nov 12, 2014 at 8:41 AM, Terje Froysa <[email protected]> wrote:
> Thanks Charles,
>
> I appreciate your ideas.
> I seem stuck "between a rock and a hard place" with very little substantial
> experiences to collect from the communities.
>
> I will try a couple of permutations more before I may revert to using the
> standard Linux drivers.
>
> I also got some comments from Xenomai (Gilles Chanteperdrix) below.
>
> Regards
> Terje Froysa
>
>
> At first sight, I would say that the omap_serial driver does not implement
> the necessary support (probably some ioctls), for what setserial is trying
> to do.
>
>  I see several ways out:
>
> - implement the missing support in omap serial so that you can use the
> "setserial none" command;
>
> - try and use the 8250 driver instead of the omap_serial driver, since the
> omap serial devices are 8250 compatible, this driver supports the necessary
> ioctls for the "setserial none" command to work. At some point in time, I
> know using this serial driver for the kernel console worked, but I do not
> know if it was by chance (u-boot enables the clock, so the driver does not
> have to enable it), and if it still works;

Ironically, the "omap_serial" branched from the 8250 driver around 3
years ago, currently linux-omap developers are working on merging back
to using the 8250 based driver in a future kernel version (with a big
pile of patches)..

Regards,

-- 
Robert Nelson
http://www.rcn-ee.com/

-- 
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