linux-kernel - Re: [PATCH] arm64: dts: meson-g12b-odroid-n2*: Add support for overclocking Hardkernel ODROID-N2 boards.

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Date: Thu, 22 Feb 2024 10:17:41 +0000
From: Adam Green <greena88@...il.com>
To: Jerome Brunet <jbrunet@...libre.com>
Cc: Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Neil Armstrong <neil.armstrong@...aro.org>,
 Kevin Hilman <khilman@...libre.com>,
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: meson-g12b-odroid-n2*: Add support for
 overclocking Hardkernel ODROID-N2 boards.

On 22/02/2024 09:37, Jerome Brunet wrote:
> Patch title is too long - checkpatch.pl should have given a you warning
> for this.
> 
> Not sure it is wise support overclocking directly in mainline, not by
> default at least. Maybe as an overlay ? even this I'm not too sure.

Hi Jerome,

Appologies for this but checkpatch did not raise any issues re the
length of the commit message.

Overclocking is not enabled by default due to the turbo-mode bit
being set, it still requires the user to issue the following
command to activate.

echo "1" > /sys/devices/system/cpu/cpufreq/boost

It's also worth noting that regulator voltages have not been
upped to achieve this.

Lastly if the HK wiki is to be believed then the N2 (non-plus) is 
already overclocked in mainline.

Best regards,

Adam