[U-Boot] serial init

Valentin Ecker valentin.ecker.dev at gmail.com
Thu Mar 18 15:58:29 CET 2010


I see...I think we have a very similar setup, and I see how you init  
your ports. Although I'm not sure if this is suitable for me, since  
editing the ns16550-files to support/init an external COM-chip is not  
a really clean/nice implementation.

I'm not sure if there is any way to implement this in a nice way. But  
I will let you know if we find something ;)

thx for your help!
Valentin

On 18.03.2010, at 15:37, Michael Zaidman wrote:

> On Thu, Mar 18, 2010 at 2:21 PM, Valentin Ecker
> <valentin.ecker.dev at gmail.com> wrote:
>> well, i don't want to use the second com port of the ns16550. Im  
>> using an
>> external serial chip over EMIF.
>
> I am not familiar with Davinci architecture and probably my case is
> completely different from yours but on our board we have dual uart on
> mpc8349 chip + external quad uart ns16554 chip connected via local
> bus. The current u-boot code supports up to 4  ns16550 devices, i.e.
> from COM1 to COM4. So I extended the serial_ports array to 6 entries
> and in this way got ability to communicate via COM5 and COM6.
>
> Michael.



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