May I suggest something more to add if available? It would be great to have the core and memory voltages. As an example of a specific application where it would have been usefull: it would have been easier to debug the problem with Cayman when vddci was not correctly set (it would have been higher or lower than expected or the value would have been nonsense).
Thanks, Alexandre Demers
On Wed, Oct 1, 2014 at 12:30 PM, Alexandre Demers alexandre.f.demers@gmail.com wrote:
May I suggest something more to add if available? It would be great to have the core and memory voltages. As an example of a specific application where it would have been usefull: it would have been easier to debug the problem with Cayman when vddci was not correctly set (it would have been higher or lower than expected or the value would have been nonsense).
It wouldn't have helped for that problem since there's no way to query the actual vddc or vddci or even the clocks. All you can query is which performance level is active, the driver has to determine the clocks and voltages based on that. It's basically the same info that is already exposed via debugfs.
Alex
Am 02.10.2014 um 06:50 schrieb Alex Deucher:
On Wed, Oct 1, 2014 at 12:30 PM, Alexandre Demers alexandre.f.demers@gmail.com wrote:
May I suggest something more to add if available? It would be great to have the core and memory voltages. As an example of a specific application where it would have been usefull: it would have been easier to debug the problem with Cayman when vddci was not correctly set (it would have been higher or lower than expected or the value would have been nonsense).
It wouldn't have helped for that problem since there's no way to query the actual vddc or vddci or even the clocks. All you can query is which performance level is active, the driver has to determine the clocks and voltages based on that. It's basically the same info that is already exposed via debugfs.
I hoped we could expose the PLL test registers as well, this way somebody could actually measure at least the clocks instead of just calculating them from the PM profile in use.
Christian.
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