Date: Fri, 25 Sep 2020 15:04:06 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 249889] [cpufreq] does not seem to fully support AMD Ryzen 9 4900H Message-ID: <bug-249889-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D249889 Bug ID: 249889 Summary: [cpufreq] does not seem to fully support AMD Ryzen 9 4900H Product: Base System Version: CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: florian.millet@laposte.net Created attachment 218282 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D218282&action= =3Dedit dmesg output Hello everyone, It would seems that FreeBSD cpufreq driver does not yet fully support AMD R= yzen 9 4900H processor. When doing a sysctl dev.cpu.0 on a FreeBSD current at svn revision r366130 = it shows : root@laptop:~ # sysctl dev.cpu.0 dev.cpu.0.temperature: 51.0C dev.cpu.0.cx_method: C1/hlt C2/io C3/io dev.cpu.0.cx_usage_counters: 17638 0 929634 dev.cpu.0.cx_usage: 1.86% 0.00% 98.13% last 7510us dev.cpu.0.cx_lowest: C8 dev.cpu.0.cx_supported: C1/1/1 C2/2/400 C3/3/350 dev.cpu.0.freq_levels: 3300/4021 1700/1615 1400/1277 dev.cpu.0.freq: 1400 dev.cpu.0.%parent: acpi0 dev.cpu.0.%pnpinfo: _HID=3DACPI0007 _UID=3D1 _CID=3Dnone dev.cpu.0.%location: handle=3D\_SB_.PLTF.P000 dev.cpu.0.%driver: cpu dev.cpu.0.%desc: ACPI CPU root@laptop:~ # You can see that the cpu can go from 1400 Mhz to 3300 Mhz but it is suppose= d to be capable to boost to 4400 Mhz (AMD specifications can be found here : https://www.amd.com/en/products/apu/amd-ryzen-9-4900h). during the boot I can see that cpufreq detects something : hwpstate0: <Cool`n'Quiet 2.0> on cpu0 Is turbo mode implemented for Ryzen Zen 2 3rd gen CPUs ? --=20 You are receiving this mail because: You are the assignee for the bug.=
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