linux-kernel - Re: [PATCH v5 07/11] cpufreq: dt-platdev: Blacklist NVIDIA Tegra20 and Tegra30 SoCs

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Message-ID: <aee736a0-444c-3d1a-1e51-c5b5259eb1b5@gmail.com>
Date:   Fri, 13 Dec 2019 16:27:47 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        Prashant Gaikwad <pgaikwad@...dia.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        linux-pm@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 07/11] cpufreq: dt-platdev: Blacklist NVIDIA Tegra20
 and Tegra30 SoCs

18.11.2019 19:51, Dmitry Osipenko пишет:
> 18.11.2019 19:45, Dmitry Osipenko пишет:
>> Both NVIDIA Tegra20 and Tegra30 SoCs should be blacklisted because CPU
>> OPPs use supported_hw and thus platdev isn't suitable for these SoCs.
>> Currently cpufreq-dt driver produces a bit annoying warning splats
>> during boot because valid OPPs are not found, this will be fixed once
>> tegra20-cpufreq driver will be update to support cpufreq-dt. The warnings
>> will also happen on older stable kernels using newer device-trees, thus
>> this patch should be backported to stable kernels as well.
>>
>> Cc: <stable@...r.kernel.org>
>> Reported-by: Jon Hunter <jonathanh@...dia.com>
>> Fixes: 4053aa65c517 ("ARM: tegra: cardhu-a04: Add CPU Operating Performance Points")
>> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
>> ---
>>  drivers/cpufreq/cpufreq-dt-platdev.c | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
>> index f1d170dcf4d3..aba591d57c67 100644
>> --- a/drivers/cpufreq/cpufreq-dt-platdev.c
>> +++ b/drivers/cpufreq/cpufreq-dt-platdev.c
>> @@ -121,6 +121,8 @@ static const struct of_device_id blacklist[] __initconst = {
>>  	{ .compatible = "mediatek,mt8176", },
>>  	{ .compatible = "mediatek,mt8183", },
>>  
>> +	{ .compatible = "nvidia,tegra20", },
>> +	{ .compatible = "nvidia,tegra30", },
>>  	{ .compatible = "nvidia,tegra124", },
>>  	{ .compatible = "nvidia,tegra210", },
>>  
>>
> 
> Hello Viresh,
> 
> Could you please pick up this patch for v5.5 fixes? Thanks in advance!
> 

Viresh / Rafael? Maybe I should send that patch separately?