[PATCH] fix-glamofb-flicker-72hz-refresh.patch

[Werner Almesberger]

Andy Green wrote:
> This is on a 200MHz bandwidth 'scope, that's really what
> the "square wave" actually looks like at the LCM connector :-)

My breakfast almost hit the screen :-(

I wouldn't be surprised if this caused yield issues or, worse,
misbehaviour in the field.

We also had a LCM clock problem in GTA01 development, where a clock
was accidently inverted. (Not sure if this was pixels or data.)
Surprisingly, the LCM tolerated this abuse more often than not,
that's why it took us months to find that problem, but there was
surely a lot of anger on our side about the "lousy quality" we got
from our supplier ...

(I kind of wonder what they thought of us ;-)

> If there is no objection maybe we could try 12pF or somesuch there
> instead of 47pF.  But at this time near production I can imagine the
> urge is to let all sleeping dogs lie.

47pF really seems to be pushing our luck. Allen, do you remember
what kind of interference issue this fixes ?

- Werner