Hi all,
I agree with the previous posts in this thread.
The use of > 48kHz sample rate is common use today, so if the hardware supports it, the driver should not disable it.
Since there are some users that successfully use SPDIF with > 48kHz, it cannot be a general hardware problem. If there's a general hardware problem, then it would never work for anyone.
If there are some codec chips/variants/versions, or even certain boards that have bad SPDIf signal performance, then we should black-list those bad chips/versions/boards, rather than disable the feature for everyone.
Also, as far as I understand, the worst thing that can happen when a "too high" sample rate is used: It will not work for some users on some hardware. That, I think, is acceptable (if no workaround / black-list can be created).
This would be different if there are other effects: If the high sample rate would cause some hardware-lock-up or similar, then it definitely needs to be disabled.
Regards,