Messages in this thread | | | From | Prabhakar Lad <> | Date | Thu, 4 Oct 2012 10:22:06 +0530 | Subject | Re: [PATCH] ARM: davinci: dm644x: fix out range signal for ED |
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Hi Sekhar,
On Wed, Oct 3, 2012 at 4:08 PM, Sekhar Nori <nsekhar@ti.com> wrote: > On 10/3/2012 12:05 PM, Prabhakar wrote: >> From: Lad, Prabhakar <prabhakar.lad@ti.com> >> >> while testing display on dm644x, for ED out-range signals >> was observed. This patch fixes appropriate clock setting >> for ED. > > Can you please clarify what you mean by "out range signal"? Are there > any user visible artifacts on the display? What was the clock being > provided earlier and what is the value after this patch? > > Also, is the issue severe enough that this patch should be applied to > stable tree as well? > Ideally a clock of 54Mhz is required for enhanced definition to work, which it was actually set to but while testing I noticed out-of-range signal. The out-of-range signal is often caused when the field rate is above the rate that the television will handle. When this is the case the TV or monitor displays "Out-Of-Range Signal".
Reducing the clock fixed it. now the clock is set to 27Mhz.
Regards, --Prabhakar
> Thanks, > Sekhar
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