[Openchrome-devel] [PATCH 2/2] via: Add missing magic value to IGA1 fetch count

Ondrej Zary linux
Wed Sep 5 06:57:32 PDT 2012

On Saturday 1 September 2012, James Simmons wrote:
> > Fetch count for IGA1 is missing magic "+4" that is called
> > IGA1_FETCH_COUNT_PATCH_VALUE in viafb. This causes screen to be distorted
> > at least on K8M890CE.
> Never mind I did fix the set_base issue before. You almost had the patch
> right. The value is +1 instead of +4 since the fetch count passed in is
> the number of quad words (>> 4). Thank you for finding these bugs.

Looks like it works with +1 too. Testing it right now - at 1280x1024, the pich 
is 0x40. Anything from 0x41 to 0xfa seems to work. Don't know why viafb uses 

Ondrej Zary

More information about the Openchrome-devel mailing list