From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21A1BC18E5B for ; Tue, 10 Mar 2020 13:17:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E92AF2467D for ; Tue, 10 Mar 2020 13:17:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583846238; bh=+v/rSLFy5PwCrzfAzZaFb36j3/dbL6vBNeLEcFwzJvA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ugCscirWfPnqVjL0ZuxfDmKxQ13kR1HLpfOhgNQ/jyfjg/ZOeb+9AndSah0snj2Gz 8oDdsCVWoluJbKWGzJ6q6e0spzFx4TGKSgo25+dFWvEm2TPMFioh6xjPq3/ah2/R5v eBDz0pEdvf71rpsqQBi8OSjMgIMyv54BvnIlbYYs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731505AbgCJNMC (ORCPT ); Tue, 10 Mar 2020 09:12:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:34010 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731501AbgCJNMB (ORCPT ); Tue, 10 Mar 2020 09:12:01 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D007924691; Tue, 10 Mar 2020 13:12:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583845921; bh=+v/rSLFy5PwCrzfAzZaFb36j3/dbL6vBNeLEcFwzJvA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GpOYcvjlhu6mfK0Zn6vUyQo7qEY9VE5abFANBfAkifElZvvZO+LxL6GFFFsyTSPhP 69xx/hdngIhyCaG5zBS3DhN1FSC3os5nS72PcctDYu3RgzRWSi0DKeZpjMv/MoW7Ii AAWD0r+R40E6zO1wEjWNERiftzCfGTG0xNunVZH4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Florian Fainelli , Vivien Didelot , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 03/86] net: dsa: bcm_sf2: Forcibly configure IMP port for 1Gb/sec Date: Tue, 10 Mar 2020 13:44:27 +0100 Message-Id: <20200310124530.993443881@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200310124530.808338541@linuxfoundation.org> References: <20200310124530.808338541@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Florian Fainelli [ Upstream commit 98c5f7d44fef309e692c24c6d71131ee0f0871fb ] We are still experiencing some packet loss with the existing advanced congestion buffering (ACB) settings with the IMP port configured for 2Gb/sec, so revert to conservative link speeds that do not produce packet loss until this is resolved. Fixes: 8f1880cbe8d0 ("net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec") Fixes: de34d7084edd ("net: dsa: bcm_sf2: Only 7278 supports 2Gb/sec IMP port") Signed-off-by: Florian Fainelli Reviewed-by: Vivien Didelot Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/dsa/bcm_sf2.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c index f181a28cb452e..8c69789fbe094 100644 --- a/drivers/net/dsa/bcm_sf2.c +++ b/drivers/net/dsa/bcm_sf2.c @@ -73,8 +73,7 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port) /* Force link status for IMP port */ reg = core_readl(priv, offset); reg |= (MII_SW_OR | LINK_STS); - if (priv->type == BCM7278_DEVICE_ID) - reg |= GMII_SPEED_UP_2G; + reg &= ~GMII_SPEED_UP_2G; core_writel(priv, reg, offset); /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */ -- 2.20.1