[U-Boot-Users] USART on at91rm9200

[Matt Gessner]

> -----Original Message-----
> From: Leonid [mailto:Leonid at a-k-a.net]
> Sent: Monday, August 13, 2007 12:26 PM
> To: Matt Gessner; u-boot-users at lists.sourceforge.net
> Subject: RE: [U-Boot-Users] USART on at91rm9200
> 
> On Monday, August 13, 2007 8:47 AM Matt Gessner wrote:
> To: Leonid; u-boot-users at lists.sourceforge.net
> Subject: RE: [U-Boot-Users] USART on at91rm9200
> 
> > Are you certain you configured it properly?  Did you just tell
u-boot
> to use the USART for your output port?  Did you miss some
> > configuration in your boot setup (the code loaded into SRAM before
you
> start) that might be causing a problem?
> 
> This is always a possibility, but I'm working with u-boot in general
and
> with this particular CPU for so long, I cannot think of something I
have
> really missed. All defines are in place, I even can get serial data on
> USART output, but TX ready/ RX ready bits of CSR are not working
> somehow.
> 

Have a look at the way that linux 2.6.20 (patched from Maxim) does
things.  It's possible there's a configuration or two missing.

I had an issue with USART0 once because I didn't read something
carefully.