RE: [Gumstix-users] new gumstix patches - should fix HWUART

[Gordon K. <go...@gu...>]

IIRC, I changed some reserved DMA registers to HWUAT based on pp 595 & 596 here:

http://www.intel.com/design/pca/applicationsprocessors/manuals/27869302.pdf

Gordon



> -----Original Message-----
> From: gum...@li... 
> [mailto:gum...@li...] On Behalf 
> Of Zach Welch
> Sent: Thursday, March 25, 2004 1:38 PM
> To: gum...@li...
> Subject: Re: [Gumstix-users] new gumstix patches - should fix HWUART
> 
> 
> Gordon Kruberg wrote:
> > Thank you for all your work.  I will try to test the HW-UART code as
> > soon as possible.  One question I had was whether you 
> thought it was 
> > a problem that the HWUART used the IRQ(0)?
> 
> IRQ 0 works fine, though it did cause a little bit of 
> confusion at first.  The problem seems to be entirely 
> isolated to the read channel, as writing data will generate 
> appropriate interrupts.
> 
> My feeling is that the DMA control register definitions might 
> be wrong, as were all of the register definitions for the 
> HWUART before I fixed them.  I can not find any documentation 
> to confirm your changes of two reserved DMA control registers 
> to correspond to the HWUART.  Can you provide a pointer into 
> the specs showing where you got this?
> 
> Cheers,
> 
> Zach
>