Wolfgang Denk wrote: >Dear Kate, > >in message <40D6ECB0.6040301 at iti.fi> you wrote: > > >>Small notice about Coral-P card. Least one that i have needs separate -12V to >>connec to PCI >>connector pins. There is no -12V supply on board. The Coral-P does itself >>need >>-12V but there is one analog mux in video output that needs -5V that is >>generated from -12V. >> >> > >Are you really sure? Maybe it was just an issue of finding the right >jumper settings (which is non-trivial). We tested both with Rev. 4.0 >and Rev. 5.0 cards, and didn't need -12V. > > > I am absolutelly sure. Ihe document mb86295eb01-schematics-190503.pdf in page 8 has analog mux U25 EL4331C that takes to pin 13 -5V voltage that comes from U251 79L05 regulator that generates it from -12V. Even there is bypass jumpers JP 250-JP252 the EL4331C inputs still clamp video output levels. I really fighted a long tive with debugging driver untill i found reason why there is no video signal.
My board is Rev 3.0 so, may be they have fixed it in 4.0 or 5.0 versions. Kate ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
