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

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Message-ID: <a57c80f0-59a7-c758-c914-025f12c85ba8@gmail.com>
Date:   Mon, 16 Dec 2019 17:11:25 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     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>,
        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

16.12.2019 07:08, Viresh Kumar пишет:
> On 16-12-19, 09:35, Viresh Kumar wrote:
>> On 18-11-19, 19:45, Dmitry Osipenko wrote:
>>> 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", },
>>
>> Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
> 
> Oops, pasted the wrong register here :(
> 
> Applied. Thanks.
> 

Thanks!