[coreboot] Re: Intel sVID controller and SVID bus.

2019-03-20 Thread dponamorev
The reason for the poor performance was not working SVID bus. Understand exactly what settings affect the enabling/disabling SVID bus failed to find out. The problem was solved by choosing another platform in spsFITs (Aspen Cove instead of Harcuvar). After that, the SVID bus started to work, we

[coreboot] Re: Intel sVID controller and SVID bus.

2019-02-22 Thread Alex Feinman
Intel CPUs typically drive SVID-enabled PMICs using an internal small core (at least Core m and Core i parts). In any case, the peripherals on SVID bus have addresses that sometimes are assigned via bootstrap pins. Your Denverton design probably has a TI and ST Micro PMICs connected to SVID. If

[coreboot] Re: Intel sVID controller and SVID bus.

2019-02-22 Thread Naresh G. Solanki
Hi, Slow performance might be due to thermal throttling, Can you please check prochot# signal? It should be high(voltage equal to power rail to which it's pulled up to) In Linux, you can use powertop program to monitor CPU frequency, CPU C-states. Under some load, CPU will utilise max frequency.