From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0024E2E419 for ; Thu, 8 Aug 2024 04:14:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723090462; cv=none; b=MljZJ7620ILCSvx7Jn9iwuPI4es6QmTsTmplSeoxc+GXWfVhMHaggLTtH5gCQNdowxKj2MwYjjbdTTOXn0tnbY4gTtEx5BZ0ceiGK3IpI77vduDv1+luR/PCr5nfj/TccP6ScQdMqgdza6d/FqN1ZErWwEMmybHXv3wTuiNISUU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723090462; c=relaxed/simple; bh=OG6cX3d/4bHZEqZtMQEllynmVc20w1bjA3kVyiNWtq4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=NsLP10wioKjF+jE7r8yZkqyz9JJ9JcROtv+m0w05t2wJM3EAfH5qLZrlGEYwjgNdzNr4k5TelO4C7o5HOfTgNDZsj80FfDFW1FSc4n6/sf29YBxGQ5PRIk5aD6Vmr91xJ05jPJD7mSRQ0p0BJZO/vd5rozvgfyohAlfJPlPQR2c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sbuXX-0005MW-CW; Thu, 08 Aug 2024 06:14:15 +0200 Received: from [2a0a:edc0:2:b01:1d::c5] (helo=pty.whiteo.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sbuXW-005LFT-NA; Thu, 08 Aug 2024 06:14:14 +0200 Received: from ore by pty.whiteo.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1sbuXW-008jWJ-1z; Thu, 08 Aug 2024 06:14:14 +0200 Date: Thu, 8 Aug 2024 06:14:14 +0200 From: Oleksij Rempel To: Martin Whitaker Cc: netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, Woojung.Huh@microchip.com, lukma@denx.de, Arun.Ramadoss@microchip.com, kuba@kernel.org Subject: Re: [PATCH net] net: dsa: microchip: disable EEE for KSZ8567/KSZ9567/KSZ9896/KSZ9897. Message-ID: References: <20240807205209.21464-1-foss@martin-whitaker.me.uk> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20240807205209.21464-1-foss@martin-whitaker.me.uk> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org On Wed, Aug 07, 2024 at 09:52:09PM +0100, Martin Whitaker wrote: > As noted in the device errata [1-8], EEE support is not fully operational > in the KSZ8567, KSZ9477, KSZ9567, KSZ9896, and KSZ9897 devices, causing > link drops when connected to another device that supports EEE. The patch > series "net: add EEE support for KSZ9477 switch family" merged in commit > 9b0bf4f77162 caused EEE support to be enabled in these devices. A fix for > this regression for the KSZ9477 alone was merged in commit 08c6d8bae48c2. > This patch extends this fix to the other affected devices. > > [1] https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/Errata/KSZ8567R-Errata-DS80000752.pdf > [2] https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/Errata/KSZ8567S-Errata-DS80000753.pdf > [3] https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/Errata/KSZ9477S-Errata-DS80000754.pdf > [4] https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/Errata/KSZ9567R-Errata-DS80000755.pdf > [5] https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/Errata/KSZ9567S-Errata-DS80000756.pdf > [6] https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/Errata/KSZ9896C-Errata-DS80000757.pdf > [7] https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/Errata/KSZ9897R-Errata-DS80000758.pdf > [8] https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/Errata/KSZ9897S-Errata-DS80000759.pdf > > Fixes: 69d3b36ca045 ("net: dsa: microchip: enable EEE support") # for KSZ8567/KSZ9567/KSZ9896/KSZ9897 > Link: https://lore.kernel.org/netdev/137ce1ee-0b68-4c96-a717-c8164b514eec@martin-whitaker.me.uk/ > Signed-off-by: Martin Whitaker Reviewed-by: Oleksij Rempel -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |