netdev - Re: [PATCH net v6 2/3] net: dsa: microchip: use collision based back pressure mode

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Message-ID: <7659f8dd-3e7a-46f5-9e26-128c5e82535d@lunn.ch>
Date: Fri, 14 Jun 2024 15:19:50 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Enguerrand de Ribaucourt <enguerrand.de-ribaucourt@...oirfairelinux.com>
Cc: netdev@...r.kernel.org, hkallweit1@...il.com, linux@...linux.org.uk,
	woojung.huh@...rochip.com, UNGLinuxDriver@...rochip.com,
	horms@...nel.org, Tristram.Ha@...rochip.com,
	Arun.Ramadoss@...rochip.com
Subject: Re: [PATCH net v6 2/3] net: dsa: microchip: use collision based back
 pressure mode

On Fri, Jun 14, 2024 at 09:46:41AM +0000, Enguerrand de Ribaucourt wrote:
> Errata DS80000758 states that carrier sense back pressure mode can cause
> link down issues in 100BASE-TX half duplex mode. The datasheet also
> recommends to always use the collision based back pressure mode.
> 
> Fixes: b987e98e50ab ("dsa: add DSA switch driver for Microchip KSZ9477")
> Signed-off-by: Enguerrand de Ribaucourt <enguerrand.de-ribaucourt@...oirfairelinux.com>
> Reviewed-by: Woojung Huh <Woojung.huh@...rochip.com>
> Acked-by: Arun Ramadoss <arun.ramadoss@...rochip.com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew