linux-kernel - Re: [PATCH v1] clk: tegra30: Use 300MHz for video decoder by default

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Message-ID: <b362195a-665d-5e1d-4c6e-26cbc2459777@gmail.com>
Date:   Sun, 15 Nov 2020 17:10:04 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Stephen Boyd <sboyd@...nel.org>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Michael Turquette <mturquette@...libre.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        Prashant Gaikwad <pgaikwad@...dia.com>,
        Thierry Reding <thierry.reding@...il.com>
Cc:     linux-tegra@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] clk: tegra30: Use 300MHz for video decoder by default

15.11.2020 00:16, Stephen Boyd пишет:
> Quoting Dmitry Osipenko (2020-11-04 05:48:10)
>> The 600MHz is a too high clock rate for some SoC versions for the video
>> decoder hardware and this may cause stability issues. Use 300MHz for the
>> video decoder by default, which is supported by all hardware versions.
>>
>> Fixes: ed1a2459e20c ("clk: tegra: Add Tegra20/30 EMC clock implementation")
>> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
>> ---
> 
> Should this go to clk-fixes? Thierry?
> 

Either way should be good. The fix isn't critical because 600MHz seems
to be working okay on unsupported hardware.

Potentially this could vary depending on a board, but then I don't think
that there are actively-supported boards which would notice this change.

Likely that this patch will be backported by a bot anyways because of
the fixes tag.