linux-kernel - Recommended driver for current AMD processors

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Message-ID: <674a80a7-e956-ef2d-3095-41473851a402@molgen.mpg.de>
Date:   Fri, 7 Dec 2018 16:32:21 +0100
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     linux-pm@...r.kernel.org
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Recommended driver for current AMD processors

Dear Linux folks,


What driver is recommended for current AMD Ryzen based processors
like *AMD Ryzen 5 PRO 1500 Quad-Core Processor* or *AMD EPYC 7601
32-Core Processor*?

Only from the acpi-cpufreq Kconfig description, I assume, that that
driver should be used.

> config X86_ACPI_CPUFREQ
>         tristate "ACPI Processor P-States driver"
>         depends on ACPI_PROCESSOR
>         help
>           This driver adds a CPUFreq driver which utilizes the ACPI
>           Processor Performance States.
>           This driver also supports Intel Enhanced Speedstep and newer
>           AMD CPUs.
> 
>           To compile this driver as a module, choose M here: the
>           module will be called acpi-cpufreq.
> 
>           For details, take a look at <file:Documentation/cpu-freq/>.
> 
>           If in doubt, say N.

Would a “native” driver like Intel’s P state driver also give better
results? Do you know if AMD is working on something like that?



Kind regards,

Paul


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