[Bug 172421] radeon: allow to set the TMDS frequency by a special kernel parameter

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=172421

Roland Scheidegger <rscheidegger at gmx.ch> changed:

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                 CC|                            |rscheidegger at gmx.ch

--- Comment #13 from Roland Scheidegger <rscheidegger at gmx.ch> ---
(In reply to Elmar Stellnberger from comment #9)
> any other opinion by someone else on this issue?

FWIW enthusiasts love such things, but corporations do not. Hence you don't see
overclocking and similar unspecified stuff in drivers not maintained by
community generally.
Personally I've always thought the risk of damaging hardware with any kind of
overclocking is just about exactly zero as long as you don't increase voltage
levels (and you can handle the additional heat but that should be a non-issue
here). That's my limited understanding of the physics behind it :-).
I suspect part of the reason why it overclocks so well is also that this chip
should be DP 1.2 capable - meaning HBR2 mode which has a clock of 270Mhz (not
that you can really get cards with that chip which actually do have the DP
port...). Now the signalling is different with DP vs. HDMI/DVI but if I had to
take a guess I'd suspect the hw is mostly all the same.
But none of that is going to change the opinion of overclocking of anyone...

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