linux-kernel - Re: [net-next PATCH v7 0/4] net: dsa: Add Airoha AN8855 support

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Message-ID: <20241118144859.4hwgpxtql5fplcyt@skbuf>
Date: Mon, 18 Nov 2024 16:48:59 +0200
From: Vladimir Oltean <olteanv@...il.com>
To: Christian Marangi <ansuelsmth@...il.com>
Cc: Andrew Lunn <andrew@...n.ch>, Florian Fainelli <f.fainelli@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, netdev@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	upstream@...oha.com
Subject: Re: [net-next PATCH v7 0/4] net: dsa: Add Airoha AN8855 support

Hi Christian,

On Sun, Nov 17, 2024 at 02:27:55PM +0100, Christian Marangi wrote:
> This small series add the initial support for the Airoha AN8855 Switch.
> 
> It's a 5 port Gigabit Switch with SGMII/HSGMII upstream port.
> 
> This is starting to get in the wild and there are already some router
> having this switch chip.
> 
> It's conceptually similar to mediatek switch but register and bits
> are different. And there is that massive Hell that is the PCS
> configuration.
> Saddly for that part we have absolutely NO documentation currently.
> 
> There is this special thing where PHY needs to be calibrated with values
> from the switch efuse. (the thing have a whole cpu timer and MCU)

Have you run the scripts in tools/testing/selftests/drivers/net/dsa/?
Could you post the results?