From patchwork Wed Aug 31 11:18:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 12960655 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 4C9C7ECAAD5 for ; Wed, 31 Aug 2022 11:20:14 +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=OWqyU5asb9eUK27k0r2ta1zg19Q5b2kT4FqzP7uWGTQ=; b=KRuVvSmJJDMdvS lyj9QQ3bfMH+LRTsnLC2WcGDW/qCUYOM0zhEpNM8yR2xXpd4cKj5Pa/MEz61Q+/3L17gpcK4dZG6w Bqipvq60EN0ktZ1GqPj7KDeR2QY4S3uL9TOKUfZQVPbYyY/hwSkDmx/1ZHDJWK22+IzJBC7AZ15dp pCF8Qs9pn6oUC7JO4BOgVrCQyCAp2diLsS0DTOFoKtoodYouEqKSSdAP4dsLp6AjBzEkZ8cuR9ezq tSyEVyOsNkdPJnw+jK5IziLdadQNPpUG1aMw1y+18EfcVMPRC3IZIyGUhqAhHZejMOToZXT+Oigeq S8Pbytevy4D9+F4eHJgQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oTLkU-005rQd-Ed; Wed, 31 Aug 2022 11:19:10 +0000 Received: from 0001.3ffe.de ([2a01:4f8:c0c:9d57::1] helo=mail.3ffe.de) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oTLkQ-005rNr-Lv for linux-arm-kernel@lists.infradead.org; Wed, 31 Aug 2022 11:19:09 +0000 Received: from mwalle01.kontron.local. (unknown [213.135.10.150]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.3ffe.de (Postfix) with ESMTPSA id A86F62010; Wed, 31 Aug 2022 13:19:01 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2022082101; t=1661944741; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=X7mCDy9QYi5qoq+ya8RweTlaPGnN3dnHkWi7lO6NuVg=; b=riWaNiacezQiSPxBD4dMmy8S0z9MNWArpj+CBWmynnbQCHyW+AGCq5gLggaqSQleGCedoW IdIpQHpSTnX3jZl6olZvcLLC7DMTZPAWOdZB99paYGglXZdPpjM+MRQI2okWBV/AG9oraX NT3N17ags2M7PvPtjgJLSl+2e9lilJk5aOFUQrtrSQooZuxmGfYytRbUnCTNurIJ0mwEOg IwzHTvCJ2zDs4/Z9TtUeb+rGE/Jyjlenrojnkwq+Ie8Cmn53B5cNOsqRLbzuLUiwRdKu90 Gdvq8DTkQrYXXDqoTzpWXzKLT52wI4DBiEsNcYbZi21liT/P1O1ZM1R0Cc6e5Q== From: Michael Walle To: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Lars Povlsen , Steen Hegelund , Horatiu Vultur Cc: UNGLinuxDriver@microchip.com, Philipp Zabel , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Michael Walle Subject: [PATCH net-next 2/2] net: lan966x: make reset optional Date: Wed, 31 Aug 2022 13:18:55 +0200 Message-Id: <20220831111855.1749646-3-michael@walle.cc> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220831111855.1749646-1-michael@walle.cc> References: <20220831111855.1749646-1-michael@walle.cc> MIME-Version: 1.0 X-Spam: Yes X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220831_041906_896887_4052B807 X-CRM114-Status: GOOD ( 11.66 ) 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 is no dedicated reset for just the switch core. The reset which is used up until now, is more of a global reset, resetting almost the whole SoC and cause spurious errors by doing so. Make it possible to handle the reset elsewhere and make the reset optional. Signed-off-by: Michael Walle --- drivers/net/ethernet/microchip/lan966x/lan966x_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c index 2ad078608c45..e2c77f954a3d 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c @@ -971,7 +971,8 @@ static int lan966x_reset_switch(struct lan966x *lan966x) int val = 0; int ret; - switch_reset = devm_reset_control_get_shared(lan966x->dev, "switch"); + switch_reset = devm_reset_control_get_optional_shared(lan966x->dev, + "switch"); if (IS_ERR(switch_reset)) return dev_err_probe(lan966x->dev, PTR_ERR(switch_reset), "Could not obtain switch reset");