linux-kernel - Re: [PATCH v6 5/5] platform/x86/intel: pmc/core: Add GBE Package C10 fix for Alder Lake PCH

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Message-ID: <CAHp75VcX0Xg2iamrew4qvzo1765MaSnr2uQ3ZMksS=3YiSthZw@mail.gmail.com>
Date:   Sat, 31 Jul 2021 11:43:31 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Gayatri Kammela <gayatri.kammela@...el.com>
Cc:     Platform Driver <platform-driver-x86@...r.kernel.org>,
        Mark Gross <mgross@...ux.intel.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Rajneesh Bhardwaj <irenic.rajneesh@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        You-Sheng Yang <vicamo.yang@...onical.com>,
        "Pandruvada, Srinivas" <srinivas.pandruvada@...el.com>,
        "Box, David E" <david.e.box@...el.com>, chao.qin@...el.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Tamar Mashiah <tamar.mashiah@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rajat Jain <rajatja@...gle.com>,
        Shyam Sundar S K <Shyam-sundar.S-k@....com>,
        Alex Deucher <Alexander.Deucher@....com>, mlimonci@....com,
        "David E. Box" <david.e.box@...ux.intel.com>
Subject: Re: [PATCH v6 5/5] platform/x86/intel: pmc/core: Add GBE Package C10
 fix for Alder Lake PCH

On Sat, Jul 31, 2021 at 9:10 AM Gayatri Kammela
<gayatri.kammela@...el.com> wrote:

> Alder PCH uses the same Gigabit Ethernet (GBE) device as Tiger Lake PCH

Alder Lake

> which cannot achieve PC10 without ignoring the PMC GBE LTR. Add this
> work around for Alder Lake PCH as well.

...

>         /*
> -        * On TGL, due to a hardware limitation, the GBE LTR blocks PC10 when
> -        * a cable is attached. Tell the PMC to ignore it.
> +        * On TGL and ADL, due to a hardware limitation, the GBE LTR blocks PC10
> +        * when a cable is attached. Tell the PMC to ignore it.
>          */

TGL -> Tiger Lake
ADL -> Alder Lake

-- 
With Best Regards,
Andy Shevchenko