[U-Boot-Users] Serial init of both SMC and SCC

[Wolfgang Denk]

In message <004B1D7A5257174C9044A1B7BD0E60ED0178CC5C at ratatosk.combitechsystems.com> you wrote:
> >
> I'm trying to get three serial ports up and running simultaneously. I'm
> using slightly modified TQM823L based board (added FPGA) with serials on
> SMC1, SMC2 and SCC3. The problem is to get SCC3 alive into Linux. A
> detailed study of the problem follows shows that when using 
> SCC3 for console in u-boot, it also works in Linux, but when using SMC1
> (or SMC2) for console, SCC3 does not work in Linux. So I have come to my
> own humble conclusion that it has something to do with the
> initialization of the serial devices in u-boot. Long story short:

No,  you  are  wrong.  Linux  drivers  must   never   rely   on   any
initialization done by any boot loader.

> I _really_ want the console on SMC1 and I need the SCC3 serial working
> on the side. Are there any appropriate ways of achieving this (I've
> tried enabling both SMC1 and SCC3 for console but that did not do the
> trick)?

Fix your Linux driver / port. This is not an U-Boot issue.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
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