From patchwork Wed Dec 27 04:43:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?QXLEsW7DpyDDnE5BTA==?= X-Patchwork-Id: 13505130 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1DDA3C46CD2 for ; Wed, 27 Dec 2023 04:45:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=msB6JrV+LwU1Ji7LVUgL/4wJx0CBci+UAFD+X8vwoOM=; b=mQClfXQY/eNzyR djskFT6VRCmcYhDqEr59PKs6L2rSX3lB/Ba/x3lsLAA09yVkTFZc4MG5SjoCmiJp5ZPW0EnEoFkGu AMNgEpr6EZC79ot+63t07wp3oJca7wlpvgX4HEzeBJe8auoScAC3enJD6p7vBBfoakUt9yx4tmsr7 Z9BReJvjaB4rb2EK+BHee6ohb4/kStLk837qmHPKdFd+pgI+LBI7REbAmnsu6KGyp2OhgXGVUwhPY MI6OB+gYG6KnUSPGOIZAIDY+r2OFdAtenNPo/ua22g7CcE5yPCY7J7otiKqXcwENniAIu1QYMG6YA AGzRnUH7h7rS/1jy/dkg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rILmh-00Dxt6-1v; Wed, 27 Dec 2023 04:44:47 +0000 Received: from relay5-d.mail.gandi.net ([217.70.183.197]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rILmP-00Dxio-1r; Wed, 27 Dec 2023 04:44:31 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id AFD961C0005; Wed, 27 Dec 2023 04:44:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arinc9.com; s=gm1; t=1703652268; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=65dnSrXOzOWi1yBmaxCyl5uIl8FJyuseOOIh7XCp6Nw=; b=pbfdb9ZckIq0GiF6ZQXcoPL9NYz5KTp/akQy1oM+OAntJ30kQlZiw6pwN+X4dsC+9U3YtF J71g4J37jWowhZ72DE0O6YwTyypqsGvP242XbLs2av7OJG7lEXCrdqQj6PhyAZOIB+0IE/ 9s0yxYbwgx9oyZQWhdGuDMPbfdT3pcgS36qQwzyFVFRkXlMLZhOa6UnHZoA0iZirn8L0Ps P9326Uh6Ftrxakq3sSrah0a9eyZFdij23CtsqlbSKonkhP82O00fuKd5zW7LeJJwqBMmql NJwSb8oLh4a85qBLryil8hdemUvaAYomlzScItjvrj7E90QAM4VJ45yU947Qsg== From: =?utf-8?b?QXLEsW7DpyDDnE5BTA==?= To: =?utf-8?b?QXLEsW7DpyDDnE5BTA==?= , Daniel Golle , Landen Chao , DENG Qingfang , Sean Wang , Andrew Lunn , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Matthias Brugger , AngeloGioacchino Del Regno , Russell King Cc: Frank Wunderlich , Bartel Eerdekens , mithat.guner@xeront.com, erkin.bozoglu@xeront.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH net-next v2 5/7] net: dsa: mt7530: improve code path for setting up port 5 Date: Wed, 27 Dec 2023 07:43:45 +0300 Message-Id: <20231227044347.107291-6-arinc.unal@arinc9.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231227044347.107291-1-arinc.unal@arinc9.com> References: <20231227044347.107291-1-arinc.unal@arinc9.com> MIME-Version: 1.0 X-GND-Sasl: arinc.unal@arinc9.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231226_204429_876652_23EC6208 X-CRM114-Status: GOOD ( 17.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org There're two code paths for setting up port 5: mt7530_setup() -> mt7530_setup_port5() mt753x_phylink_mac_config() -> mt753x_mac_config() -> mt7530_mac_config() -> mt7530_setup_port5() Currently mt7530_setup_port5() from mt7530_setup() always runs. If port 5 is used as a CPU, DSA, or user port, mt7530_setup_port5() from mt753x_phylink_mac_config() won't run. That is because priv->p5_interface set on mt7530_setup_port5() will match state->interface on mt753x_phylink_mac_config() which will stop running mt7530_setup_port5() again. Therefore, mt7530_setup_port5() will never run from mt753x_phylink_mac_config(). Address this by not running mt7530_setup_port5() from mt7530_setup() if port 5 is used as a CPU, DSA, or user port. This driver isn't in the dsa_switches_apply_workarounds[] array so phylink will always be present. To keep the cases where port 5 isn't controlled by phylink working as before, preserve the mt7530_setup_port5() call from mt7530_setup(). Do not set priv->p5_intf_sel to P5_DISABLED. It is already set to that when "priv" is allocated. Move setting the interface to a more specific location. It's supposed to be overwritten if PHY muxing is detected. Improve the comment which explains the process. Signed-off-by: Arınç ÜNAL Reviewed-by: Vladimir Oltean --- drivers/net/dsa/mt7530.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c index 558784f830c2..bf6c59ecc489 100644 --- a/drivers/net/dsa/mt7530.c +++ b/drivers/net/dsa/mt7530.c @@ -2308,16 +2308,15 @@ mt7530_setup(struct dsa_switch *ds) return ret; /* Setup port 5 */ - priv->p5_intf_sel = P5_DISABLED; - interface = PHY_INTERFACE_MODE_NA; - if (!dsa_is_unused_port(ds, 5)) { priv->p5_intf_sel = P5_INTF_SEL_GMAC5; - ret = of_get_phy_mode(dsa_to_port(ds, 5)->dn, &interface); - if (ret && ret != -ENODEV) - return ret; } else { - /* Scan the ethernet nodes. look for GMAC1, lookup used phy */ + /* Scan the ethernet nodes. Look for GMAC1, lookup the used PHY. + * Set priv->p5_intf_sel to the appropriate value if PHY muxing + * is detected. + */ + interface = PHY_INTERFACE_MODE_NA; + for_each_child_of_node(dn, mac_np) { if (!of_device_is_compatible(mac_np, "mediatek,eth-mac")) @@ -2348,6 +2347,8 @@ mt7530_setup(struct dsa_switch *ds) of_node_put(phy_node); break; } + + mt7530_setup_port5(ds, interface); } #ifdef CONFIG_GPIOLIB @@ -2358,8 +2359,6 @@ mt7530_setup(struct dsa_switch *ds) } #endif /* CONFIG_GPIOLIB */ - mt7530_setup_port5(ds, interface); - /* Flush the FDB table */ ret = mt7530_fdb_cmd(priv, MT7530_FDB_FLUSH, NULL); if (ret < 0)