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=249889 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=218282&action=edit dmesg output Hello everyone, It would seems that FreeBSD cpufreq driver does not yet fully support AMD Ryzen 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=ACPI0007 _UID=1 _CID=none dev.cpu.0.%location: handle=\_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 supposed 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 ? -- You are receiving this mail because: You are the assignee for the bug.home | help
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