linux-kernel - Re: [Patch 2/2] cpufreq: tegra194: Fix unlisted boot freq warning

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Message-ID: <f387abcc-f68f-37fb-32cb-d8eb9c75b37a@nvidia.com>
Date:   Thu, 17 Sep 2020 09:45:03 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Sumit Gupta <sumitg@...dia.com>, <viresh.kumar@...aro.org>,
        <rjw@...ysocki.net>, <thierry.reding@...il.com>,
        <linux-pm@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <sudeep.holla@....com>
CC:     <ksitaraman@...dia.com>, <bbasu@...dia.com>
Subject: Re: [Patch 2/2] cpufreq: tegra194: Fix unlisted boot freq warning


On 17/09/2020 09:38, Jon Hunter wrote:
> 
> On 16/09/2020 18:11, Sumit Gupta wrote:
>> Warning coming during boot because the boot freq set by bootloader
>> gets filtered out due to big freq steps while creating freq_table.
>> Fixing this by setting closest ndiv value from freq_table.
>> Warning:
>>   cpufreq: cpufreq_online: CPU0: Running at unlisted freq
>>   cpufreq: cpufreq_online: CPU0: Unlisted initial frequency changed
>>
>> Also, added change in init to wait till current frequency becomes
>> equal or near to the previously requested frequency. This is done
>> because it takes some time to restore the previous frequency while
>> turning-on non-boot cores during exit from SC7(Suspend-to-RAM).
> 
> Same here ...
> 
> Fixes: df320f89359c ("cpufreq: Add Tegra194 cpufreq driver")
> 
>>
>> Signed-off-by: Sumit Gupta <sumitg@...dia.com>
> Reviewed-by: Jon Hunter <jonathanh@...dia.com>
> Tested-by: Jon Hunter <jonathanh@...dia.com>
> 
> Viresh, this is also needed for v5.9.

Adding Sudeep.

Jon

-- 
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