linux-kernel - Aw: Re: [RESEND][PATCH] arm64: dts: mediatek: mt7986: fix pwn fan settings for sinovoip bpi-r3 board

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Message-ID: <trinity-a81b2adf-df25-4888-9490-cc33257061b2-1741080239272@trinity-msg-rest-gmx-gmx-live-5779db864f-7hl68>
Date: Tue, 4 Mar 2025 09:23:59 +0000
From: Frank Wunderlich <frank-w@...lic-files.de>
To: angelogioacchino.delregno@...labora.com, mikhail.kshevetskiy@...sys.eu,
 matthias.bgg@...il.com, daniel@...rotopia.org
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org
Subject: Aw: Re: [RESEND][PATCH] arm64: dts: mediatek: mt7986: fix pwn fan
 settings for sinovoip bpi-r3 board

> Gesendet: Mittwoch, 26. Februar 2025 um 10:46
> Von: "AngeloGioacchino Del Regno" <angelogioacchino.delregno@...labora.com>
> Betreff: Re: [RESEND][PATCH] arm64: dts: mediatek: mt7986: fix pwn fan settings for sinovoip bpi-r3 board

> I get that the cheapest fans you can get are not working correctly with the current
> mid pwm setting, but you can't break things.
>
> This devicetree should, at this point, hold default values that would generally
> make the vast majority of fans to actually spin, because it's impossible to have
> something perfectly (or vaguely, sometimes) optimized for each fan on the market.
>
> Of course this means that you need to properly configure your fans in userspace
> if you want to reach the sweet spot.
>
> I added Frank and Daniel to this thread, as they are the ones who originally did
> upstream this device.
>
> Frank, Daniel, any suggestion regarding the PWM values here?

Hi,

sorry for delay

i have the fan from sinovoip and that was working for me, but if your fan only works with new values, i have no point against this change.

btw. angelo, how is state for my r4-dtsi change?

regards Frank