[U-Boot] [PATCH] serial: add environment control for SERIAL_MULTI
Allen Martin
amartin at nvidia.com
Fri Oct 26 00:50:57 CEST 2012
On Thu, Oct 25, 2012 at 03:46:01PM -0700, Joe Hershberger wrote:
> Hi Stephen,
>
> On Thu, Oct 25, 2012 at 5:43 PM, Stephen Warren <swarren at wwwdotorg.org> wrote:
> > On 10/25/2012 03:59 PM, Allen Martin wrote:
> >> Add a new special environment variable "serial" that allows selection
> >> of serial device when CONFIG_SERIAL_MULTI is defined. This replaces
> >> the existing calls to serial_assign() from cmd_nvedit.c and iomux.c
> >> that were not doing anything.
> >
> > So I think this requires (for example) the following environment variables:
> >
> > stdout=serial
> > serial=eserial0
> >
> > Is it possible to allow the following instead:
> >
> > stdout=eserial0
>
> This is precisely what the patch I had pre-Marek serial did.
In your patch would "stdout=serial" still work for case where there is
only one serial port? I think it's important to try to preserve that
to no be too disruptive.
>
> > That way, one could presumably set:
> >
> > stdout=eserial0,eserial3
>
> Though it didn't allow this.
>
Shouldn't that be (nearly) transparent through iomux?
-Allen
--
nvpublic
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