linux-kernel - Re: [PATCH v7 4/7] ACPI: CPPC: add APIs and sysfs interface for min/max

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Message-ID: <CAJZ5v0jUHUf_h=GA+71NyynT+Fym2ihzety4EMaTiGOkJskJHg@mail.gmail.com>
Date: Tue, 3 Feb 2026 13:50:46 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Sumit Gupta <sumitg@...dia.com>
Cc: viresh.kumar@...aro.org, pierre.gondois@....com, zhenglifeng1@...wei.com, 
	ionela.voinescu@....com, lenb@...nel.org, robert.moore@...el.com, 
	corbet@....net, rdunlap@...radead.org, ray.huang@....com, 
	gautham.shenoy@....com, mario.limonciello@....com, perry.yuan@....com, 
	zhanjie9@...ilicon.com, linux-pm@...r.kernel.org, linux-acpi@...r.kernel.org, 
	linux-doc@...r.kernel.org, acpica-devel@...ts.linux.dev, 
	linux-kernel@...r.kernel.org, linux-tegra@...r.kernel.org, treding@...dia.com, 
	jonathanh@...dia.com, vsethi@...dia.com, ksitaraman@...dia.com, 
	sanjayc@...dia.com, nhartman@...dia.com, bbasu@...dia.com
Subject: Re: [PATCH v7 4/7] ACPI: CPPC: add APIs and sysfs interface for min/max_perf

On Tue, Feb 3, 2026 at 1:43 PM Rafael J. Wysocki <rafael@...nel.org> wrote:
>
> On Thu, Jan 29, 2026 at 11:49 AM Sumit Gupta <sumitg@...dia.com> wrote:
> >
> > Add cppc_get/set_min_perf() and cppc_get/set_max_perf() APIs to read and
> > write the MIN_PERF and MAX_PERF registers.
> >
> > Also add sysfs interfaces (min_perf, max_perf) in cppc_cpufreq driver
> > to expose these controls to userspace. The sysfs values are in frequency
> > (kHz) for consistency with other cpufreq sysfs files.
>
> But this is not cpufreq and it is not consistent.

Scratch this, sorry for the noise.