linux-kernel - Re: [PATCH] arm64: dts: mediatek: mt7988a-bpi-r4: allow hw variants of bpi-r4

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Message-ID: <EADAC3BA-3D8C-4E04-B8E3-629CAFF0194F@public-files.de>
Date: Mon, 10 Feb 2025 12:18:23 +0100
From: Frank Wunderlich <frank-w@...lic-files.de>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 Frank Wunderlich <linux@...web.de>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
 Matthias Brugger <matthias.bgg@...il.com>
CC: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH] arm64: dts: mediatek: mt7988a-bpi-r4: allow hw variants of bpi-r4

Am 10. Februar 2025 11:56:40 MEZ schrieb AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>:
>Il 07/02/25 14:54, Frank Wunderlich ha scritto:
>> From: Frank Wunderlich <frank-w@...lic-files.de>
>> 
>> Sinovoip has released other variants of Bananapi-R4 board.
>> The known changes affecting only the LAN SFP+ slot which is replaced
>> by a 2.5G phy with optional PoE.
>> 
>> As the SFP-Ports are not upstreamed yet this patch simply renames the
>> current board dts to dtsi, creating new dts for the board including
>> the new dtsi and move i2c-mux channel for sfp lan to board dts.
>> 
>> Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
>
>I understand what's going on, and I agree, but this change alone doesn't make a lot
>of sense, does it?
>
>If I were to see a commit that moves everything in a dtsi, and justifies that by
>adding two dts for the two variants, though, things would be different.... :-)
>
>Cheers,
>Angelo
>
>> ---
>>   .../dts/mediatek/mt7988a-bananapi-bpi-r4.dts  | 404 +-----------------
>>   .../dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi | 403 +++++++++++++++++
>>   2 files changed, 407 insertions(+), 400 deletions(-)
>>   create mode 100644 arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dtsi
>> 

It is preparation for adding additional nodes like sfp cages. I only have the dual-sfp board so i can only add these based on schematic. The one (wan-sfp) would go into dtsi and lan-sfp go into dts because other variants using a phy here as described.
regards Frank