I have been following that discussion and hoping you would finally find
out the reason.
But I want to point out few things;
* .set_frontend() is called only when channel changed
* .set_params() is called only when channel changed
* there is no I2C traffic for tuner after channel changed
* there is I2C traffic to tuner only when channel is changed
Since generally changes to .set_frontend() will not have effect in
normal use, when both devices are already streaming. Only in case of
lock is missed and re-tune initialized or channel changed.
regards
Antti
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