netdev - [PATCH net v4] net: dsa: microchip: disable EEE for KSZ879x/KSZ877x/KSZ876x

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Message-ID: <20241108214815.3874964-1-vtpieter@gmail.com>
Date: Fri,  8 Nov 2024 22:48:15 +0100
From: vtpieter@...il.com
To: tharvey@...eworks.com,
	o.rempel@...gutronix.de,
	pabeni@...hat.com
Cc: UNGLinuxDriver@...rochip.com,
	andrew@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	f.fainelli@...il.com,
	kuba@...nel.org,
	linux-kernel@...r.kernel.org,
	lukma@...x.de,
	netdev@...r.kernel.org,
	olteanv@...il.com,
	woojung.huh@...rochip.com,
	Pieter Van Trappen <pieter.van.trappen@...n.ch>
Subject: [PATCH net v4] net: dsa: microchip: disable EEE for KSZ879x/KSZ877x/KSZ876x

From: Pieter Van Trappen <pieter.van.trappen@...n.ch>

Hi Tim, all,

Sorry I'm a bit late to the party but I think this patch is not doing
much since most if not all KSZ8 switches don't have MMD
registers. They do have EEE registers but these require indirect
access that's not compatible with PHY MMD (indirect) registers as far
as I understand. So your patch does no harm but is not doing anything
useful either I reckon.

For the KSZ8 devices, the EEE errata is handled from the DSA switch
driver ksz8.c, ksz8_handle_global_errata.

Cheers, Pieter