Tyler Trafford wrote:
Hans Verkuil wrote:
A quick update: I strongly suspect the cx25840 and in particular the
firmware that is being loaded. I had a lucky run today where the
second unit of the PVR550 had no sound and I've pretty much excluded
the tuner, tda9887 and wm8775 chips as possible causes.
However, the firmware that is uploaded to the cx25840 is precisely the
part that is responsible for the audio detection. If I rename the
firmware file (so no firmware is uploaded) I get the same symptoms:
video OK, no sound. So tomorrow I'm going to look closer to the
firmware handling (add code to read back the firmware and check if it
is the same) and see if there are other oddities that might cause
problems.
To be continued...
You can override the firmware's autodetection by setting AUD_STANDARD
manually. That would be a good test.
I wrote almost all that firmware loading code, so let me know if you see
anything questionable.
--
Tyler Trafford
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