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Date:   Fri, 25 Jun 2021 12:11:31 +0200
From:   Daniel Golle <daniel@...rotopia.org>
To:     Frank Wunderlich <frank-w@...lic-files.de>
Cc:     Eric Woudstra <ericwouds@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Sean Wang <sean.wang@...iatek.com>,
        Ryder Lee <ryder.lee@...iatek.com>
Subject: Re: Re: Re: [PATCH] Fix mt7622.dtsi thermal cpu

Hi Frank,

On Fri, Jun 25, 2021 at 11:31:59AM +0200, Frank Wunderlich wrote:
> > Gesendet: Freitag, 25. Juni 2021 um 11:22 Uhr
> > Von: "Daniel Golle" <daniel@...rotopia.org>
> 
> > On Fri, Jun 25, 2021 at 10:16:43AM +0200, Frank Wunderlich wrote:
> > > Daniel from openwrt have some other mt7622 Boards maybe he can test the Fan approach below
> >
> > I got Linksys E8450 aka. Belkin RT3200 ( https://fcc.io/K7S-03571 ) as
> > well as Ubiquiti UniFi 6 LR ( https://fcc.io/SWX-U6LR ). Both got quite
> > massive customized heatsinks (see internal photos on FCC submission),
> > which results in much better heat dissipation than just having the
> > naked chip like on the BPi-R64.
> > Hence I also can't test the fan approach on boards other than the R64.
> 
> Do your both mt7622 boards miss the fan-socket or is it not connected to pwm3? then we need to move the fan-parts to mt7622-bananapi-r64.dts instead of mt7622.dtsi

There is no fan intended on both devices.
E8450 has an unknown connector which **could** be for a fan, but I
never tried if and how it is actually connected to the SoC.
It could as well be an additional USB 2.0 (as it got 4 pins).

Hence I suggest to add the fan on PWM3 for the BPi-R64 only for now.


Cheers


Daniel

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