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Subject: Re: [PATCH v4] arm64: dts: meson: S922X: extend cpu opp-points
From:   Christian Hewitt <christianshewitt@gmail.com>
In-Reply-To: <1ja72x2t7w.fsf@starbuckisacylon.baylibre.com>
Date:   Mon, 27 Apr 2020 13:19:09 +0400
Cc:     Tim Lewis <elatllat@gmail.com>, mark.rutland@arm.com,
        devicetree@vger.kernel.org, joy.cho@hardkernel.com,
        narmstrong@baylibre.com, khilman@baylibre.com,
        linux-kernel@vger.kernel.org, robh+dt@kernel.org,
        tobetter@gmail.com, linux-amlogic@lists.infradead.org,
        linux-arm-kernel@lists.infradead.org
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References: <20200426162119.GA23268@imac>
 <1ja72x2t7w.fsf@starbuckisacylon.baylibre.com>
To:     Jerome Brunet <jbrunet@baylibre.com>
Sender: linux-kernel-owner@vger.kernel.org
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> On 27 Apr 2020, at 1:06 pm, Jerome Brunet <jbrunet@baylibre.com> =
wrote:
>=20
> On Sun 26 Apr 2020 at 18:21, Tim Lewis <elatllat@gmail.com> wrote:
>=20
>> Add extra cpu pop points to allow mild overclock on S922X. The opp
>> points are found in Hardkernel N2 sources [1] and testing shows no
>> obvious issues on other S922X devices. Thermal throttling should
>> keep things in-check if needed.
>=20
> The Odroid-N2 has a massive heatsink mounted.
> Do we have any idea if this applies (is safe) on any other S922x
> device ?

I=E2=80=99ve tested it on several S922X box devices that I have, and =
also the
original S922X version of the VIM3 - all have similar sized passive
heatsinks about 20% the size of the N2 one. No obvious issues with
Kodi software decoding to increase CPU usage. NB: The original patch
submission was N2 specific and then reworked to apply to all S922X
devices at Neil=E2=80=99s suggestion (after my TB and earlier comments).

CH.

[snip]=