linux-kernel - Re: [PATCH] intel_idle: Add ICL support

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Message-ID: <c17c75993ebb5512e5a869fbe5b13f5c49685041.camel@gmail.com>
Date:   Wed, 26 Aug 2020 19:25:56 +0300
From:   Artem Bityutskiy <dedekind1@...il.com>
To:     Guilhem Lettron <guilhem@...pilot.io>,
        Zhang Rui <rui.zhang@...el.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>,
        Len Brown <lenb@...nel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] intel_idle: Add ICL support

On Wed, 2020-08-26 at 19:19 +0300, Artem Bityutskiy wrote:
> May be there is a BIOS update that fixes this problem? May be Windows
> user get it quickly because stuff like this is often well-integrated in
> Windows? Would you please check if there is newer BIOS?

Oh, wait a second. So ACPI_C3 is C6, the deepest C-state one can
request. Sorry, I missed this first. Scratch my questions about Windows
and newer BIOS.

So ACPI does expose the deepest C-state, but something prevents your
system from going into PC10.