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@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.