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,URIBL_BLOCKED,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 03EF3C43215 for ; Wed, 27 Nov 2019 21:23:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C356921741 for ; Wed, 27 Nov 2019 21:23:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574889807; bh=9uyfzauE58ZzV9qho2Uq/YQRYCXqOI53XmSwiLS9fDE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QiDbAJ9st6AU6CVwIgYhFmj8q5ZkKkhpebC90HYPcQm4b2eytSWpKCfxsXpB+5YZh 0lbprCNO7MGVV4vu5EuzosR04HLst++QLxXz4blC5H1QnbHGd5gNQMEdkZEKq+gG4o Z5T65utRePLtOMf6DuOpiGHPnGHpxZ6Qd0N4xxiU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732166AbfK0VEe (ORCPT ); Wed, 27 Nov 2019 16:04:34 -0500 Received: from mail.kernel.org ([198.145.29.99]:58048 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731865AbfK0VEb (ORCPT ); Wed, 27 Nov 2019 16:04:31 -0500 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 DC4AB21770; Wed, 27 Nov 2019 21:04:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574888670; bh=9uyfzauE58ZzV9qho2Uq/YQRYCXqOI53XmSwiLS9fDE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GHAO70fIoz3Wk/pTX/tip4H6nMnjS2jYflqgNeqMkdqHJbec0G6lXgJNfbHh5KOgY 3+oSV/7JHFLKvC4UfR2GhOUQgSh43DOK9xyiag5nrbdeVtgH00bbDH66cRBwAzt1PU 5w92dnTCe9hpg5Y6VvPfNus1ZYwHmzRm3YvdeQ+k= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Florian Fainelli , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 223/306] net: dsa: bcm_sf2: Turn on PHY to allow successful registration Date: Wed, 27 Nov 2019 21:31:13 +0100 Message-Id: <20191127203131.347612884@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191127203114.766709977@linuxfoundation.org> References: <20191127203114.766709977@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Florian Fainelli [ Upstream commit c04a17d2a9ccf1eaba1c5a56f83e997540a70556 ] We are binding to the PHY using the SF2 slave MDIO bus that we create, binding involves reading the PHY's MII_PHYSID1/2 which won't be possible if the PHY is turned off. Temporarily turn it on/off for the bus probing to succeeed. This fixes unbind/bind problems where the port connecting to that PHY would be in error since it could not connect to it. Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/dsa/bcm_sf2.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c index ca3655d28e00f..17cec68e56b4f 100644 --- a/drivers/net/dsa/bcm_sf2.c +++ b/drivers/net/dsa/bcm_sf2.c @@ -1099,12 +1099,16 @@ static int bcm_sf2_sw_probe(struct platform_device *pdev) return ret; } + bcm_sf2_gphy_enable_set(priv->dev->ds, true); + ret = bcm_sf2_mdio_register(ds); if (ret) { pr_err("failed to register MDIO bus\n"); return ret; } + bcm_sf2_gphy_enable_set(priv->dev->ds, false); + ret = bcm_sf2_cfp_rst(priv); if (ret) { pr_err("failed to reset CFP\n"); -- 2.20.1