On Tuesday 2020-12-22 04:58, Guenter Roeck wrote: >On 12/21/20 5:45 PM, Gabriel C wrote: >> Hello Guenter, >> >> while trying to add ZEN3 support for zenpower out of tree modules, I find out >> the in-kernel k10temp driver is broken with ZEN3 ( and partially ZEN2 even ). > >[...] since I do not have time to actively maintain >the driver, since each chip variant seems to use different addresses and scales, >and since the information about voltages and currents is unpublished by AMD, >I'll remove support for voltage/current readings from the upstream driver. I support that decision. /proc/cpuinfo::AMD Ryzen 7 3700X 8-Core Processor, fam 23 model 113 step 0 A synthetic load (perl -e '1 while 1') x 16 shows: Adapter: PCI adapter Vcore: +1.28 V Vsoc: +1.02 V Tctl: +94.8°C Tdie: +94.8°C Tccd1: +94.8°C Icore: +76.00 A Isoc: +6.75 A A BOINC workload on average: k10temp-pci-00c3 Adapter: PCI adapter Vcore: +1.17 V Vsoc: +1.02 V Tctl: +94.9°C Tdie: +94.9°C Tccd1: +95.0°C Icore: +88.00 A Isoc: +8.00 A The BOINC workload, when it momentarily spikes: Adapter: PCI adapter Vcore: +1.32 V Vsoc: +1.02 V Tctl: +94.1°C Tdie: +94.1°C Tccd1: +96.0°C Icore: +105.00 A Isoc: +7.75 A For a processor sold as a 65 W part, observing reported sensors as 88 A x 1.17 V + 8 A x 1.02 V = 111.12 W just can't be. We are off by a factor of about 2.
