[U-Boot] NS16550 Register structure
Wolfgang Denk
wd at denx.de
Thu Jan 28 12:00:55 CET 2010
Dear Hemant,
In message <2A3DCF3DA181AD40BDE86A3150B27B6B03097EC8CA at dbde02.ent.ti.com> you wrote:
>
> Any suggestions on this?
Well, the best solution would obviously be to fix the hardware...
> > There is no abort on ARM and also nothing gets to the console when UART
> > register is accessed.
Then what exactly is happening on your hardware when you read the
register? Did you really try out all options, i. e. reading as a 8
bit access with 0, 1, 2 and 3 bytes offset, etc.?
If you don't see any ecxceptions, then these accesses must be somehow
visible on the bus. Find out (using a scope / logic analyzer) which
byte lanes get accessed when, and show us a table here what happens
when.
Only after we understand what is happening on your system we can come
up with any recommendations.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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