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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Thu, 30 Jul 2020 10:57:18 +0300
Message-ID: <CAHp75VdJc58PSjgnL48jeae+=pHw28sMj3m+HTcVUZZ8kJTYqg@mail.gmail.com>
Subject: Re: [PATCH 1/1] x86/tsr: Fix tsc frequency enumeration failure on
 lightning mountain SoC
To:     Dilip Kota <eswara.kota@linux.intel.com>
Cc:     "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        "Tanwar, Rahul" <rahul.tanwar@linux.intel.com>,
        Hans de Goede <hdegoede@redhat.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Andy Shevchenko <andy@infradead.org>, cheol.yong.kim@intel.com,
        chuanhua.lei@linux.intel.com, qi-ming.wu@intel.com
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On Thu, Jul 30, 2020 at 9:16 AM Dilip Kota <eswara.kota@linux.intel.com> wrote:
>
> Frequency descriptor of Lightning Mountain SoC doesn't have all the
> frequency entries so resulting in the below failure causing kernel hang.
>
> [    0.000000] Error MSR_FSB_FREQ index 15 is unknown
> [    0.000000] tsc: Fast TSC calibration failed
>
> So, add all the frequency entries in the Lightning Mountain SoC frequency
> descriptor.

While at this, can you confirm (with maybe good description and
documentation reference) that the numbers in that array are all
correct?

-- 
With Best Regards,
Andy Shevchenko