[PATCH] fix-lcm-flicker.patch
joerg
joerg.twinklephone at gmx.de
Thu Mar 27 09:01:26 CET 2008
Am Do 27. März 2008 schrieb Werner Almesberger:
> Andy Green wrote:
> > Select instead mode 4 which swaps on alternate lines and frames, so
> > we take advantage of EMI reduction but do not see the flicker.
>
> I waited until dark, then tested it and got the following results:
>
> - portrait mode: pressed on "+" and looked at what I got. It's nice
> and stable. I can seen something resembling flicker when moving the
> device or moving the eye, but that may also be an unrelated effect.
> In any case, the image doesn't look deficient.
>
> - landscape mode: I still see line flicker. Nothing like the horrors
> we've had before, but something that's visible. That is, if I look
> carefully and from nearby. If I put on my glasses (I'm near-sighted)
> and hold the device at a distance where I can then see it without a
> blur, I don't notice any flicker anymore.
>
> I tried setting JBT_REG_ASW_SLEW to 0 and to 1, and the line flicker
> didn't go away. So I'd say your solution is as good as it gets, and
> it seems to be quite sufficient for real-life use.
>
> Congratulations on fixing that bugger !
Great job! Amazing how far we can get with a few datasheet pages available ;-)
jOERG
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