From patchwork Tue Feb 15 09:12:20 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Teresa Remmet X-Patchwork-Id: 12746738 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 42F3FC433EF for ; Tue, 15 Feb 2022 09:15:09 +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=2eAbgI0fPGywUdasUjxQfG0947Y1PhbiFICk3t9FctY=; b=NH3iO7/EYTmnoE TH6mVd7sHsGoa2yjjrFrxzNpfSrK+EX1xOvkl6xTpD1E1+SbPPUG69y8uSn2Y7I9VXnfWRnPGt1nq Md/O92qw/gh4719rHTl3d9rdqghxIr507WARbYbPpjO7Ug4IpA/iwmi90G6/nHgz01VVIV8o9qVa0 wtQoKhmn89FPPclcWfM02VHacFsLF8WQMEo2dp0n9AFe3VHloygrqPnqxRl/wvTGsTXydrj6JZTrs c281UD9Da3K9+KDJXzMXdWcfyiEjYxh4qjyrJuxcmQjPVgbfApEmcDo7T2RXuDNeXF5p7XxbqvRT6 ywmxiG5STvf+qGfOQ6BA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nJtuD-001xFp-9j; Tue, 15 Feb 2022 09:13:53 +0000 Received: from mickerik.phytec.de ([195.145.39.210]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nJtsw-001wYy-JS for linux-arm-kernel@lists.infradead.org; Tue, 15 Feb 2022 09:12:36 +0000 DKIM-Signature: v=1; a=rsa-sha256; d=phytec.de; s=a4; c=relaxed/simple; q=dns/txt; i=@phytec.de; t=1644916345; x=1647508345; h=From:Sender:Reply-To:Subject:Date:Message-Id:To:Cc:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=ovwNK21SQWeTmo2Ky73xgsCA6P+5rUyJQpio1Fekvpw=; b=RJlJWyV4AtdWlM57lIS66Q+BVJsoWU7yoUB8pENDhnatDZZyUTjWyG7sGEwzEWYQ GWuQqA21zCSOEwFItYtid3xn2kr0UXRjsJ+R3fqEfHN9C6l4PaK7tVyitPW1nMUo iranQ1MuHzPfmTAYiDoXUl/FOWFjeV9Y+wnJr+Nqkic=; X-AuditID: c39127d2-93d2170000002a63-87-620b6e79344a Received: from idefix.phytec.de (Unknown_Domain [172.16.0.10]) by mickerik.phytec.de (PHYTEC Mail Gateway) with SMTP id 66.09.10851.97E6B026; Tue, 15 Feb 2022 10:12:25 +0100 (CET) Received: from llp-tremmet.phytec.de ([172.16.20.112]) by idefix.phytec.de (IBM Domino Release 9.0.1FP7) with ESMTP id 2022021510122491-287606 ; Tue, 15 Feb 2022 10:12:24 +0100 From: Teresa Remmet To: linux-arm-kernel@lists.infradead.org Cc: Heiko Schocher , Jonas Kuenstler , Haibo Chen , NXP Linux Team , Fabio Estevam , Sascha Hauer , Shawn Guo , Rob Herring Subject: [PATCH 3/7] arm64: dts: imx8mp-phycore-som: Reduce drive strength for fec tx lines Date: Tue, 15 Feb 2022 10:12:20 +0100 Message-Id: <20220215091224.7910-4-t.remmet@phytec.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220215091224.7910-1-t.remmet@phytec.de> References: <20220215091224.7910-1-t.remmet@phytec.de> MIME-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on Idefix/Phytec(Release 9.0.1FP7|August 17, 2016) at 15.02.2022 10:12:24, Serialize by Router on Idefix/Phytec(Release 9.0.1FP7|August 17, 2016) at 15.02.2022 10:12:25 X-TNEFEvaluated: 1 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrGLMWRmVeSWpSXmKPExsWyRoCBS7cyjzvJ4O1TZouHV/0t+q+uZLTY cec+s8Wmx9dYLbp+rWS2aN17hN3i7/ZNLBYvtog7cHjMm3WCxWPnrLvsHptWdbJ5bF5S77Hx 3Q4mj/6/BgFsUVw2Kak5mWWpRfp2CVwZ+z5vYCzo5quYNHsWcwPjDp4uRk4OCQETiSmPV7KA 2EICWxkldn1P6GLkArIvMUo0Xn7HBJJgE9CQeLriNJgtAmRP6XrMDlLELDCbSeLPxG6gBAeH sEC0xMn71SA1LAKqErd3v2YGsXkFzCTW925ggVgmLzHz0nd2EJtTwFxiwb5j7BCLzSS+TG6F qheUODnzCQvIfAmBK0BHXP/DBtEsJHF68VmwImYBbYllC18zT2AUmIWkZxaS1AJGplWMQrmZ ydmpRZnZegUZlSWpyXopqZsYgWF9eKL6pR2MfXM8DjEycTAeYpTgYFYS4Y07y5kkxJuSWFmV WpQfX1Sak1p8iFGag0VJnPd+D1OikEB6YklqdmpqQWoRTJaJg1OqgTEzZt2x/tNJ0VsuTjQP r7BYNHvz5X3u/b4fpt3dKW2/8q1ojAdfk9eCRllflukGiiFWR46Wvp+6iZXjwiEX25sWXzw4 zm68w7wmx2Gp4InZUo3MC3t3Jf3dPfObWtHmNuMgJk3GKkPhCH579/PXo9fkyBrpnn5XEnrl LQP/zL0XM+2tl000NlJiKc5INNRiLipOBAAuZRLcWQIAAA== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220215_011234_827368_F68F2327 X-CRM114-Status: UNSURE ( 9.57 ) X-CRM114-Notice: Please train this message. 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 Reduce drive strength on fec tx lines for signal quality improvements. Measurements showed that TD0 and TD1 require X4 and the other lines X2 for optimized settings. Signed-off-by: Teresa Remmet --- .../arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi index 927290990d02..06e94f6e1702 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi @@ -222,12 +222,12 @@ MX8MP_IOMUXC_SAI1_RXD6__ENET1_RGMII_RD2 0x91 MX8MP_IOMUXC_SAI1_RXD7__ENET1_RGMII_RD3 0x91 MX8MP_IOMUXC_SAI1_TXC__ENET1_RGMII_RXC 0x91 MX8MP_IOMUXC_SAI1_TXFS__ENET1_RGMII_RX_CTL 0x91 - MX8MP_IOMUXC_SAI1_TXD0__ENET1_RGMII_TD0 0x1f - MX8MP_IOMUXC_SAI1_TXD1__ENET1_RGMII_TD1 0x1f - MX8MP_IOMUXC_SAI1_TXD2__ENET1_RGMII_TD2 0x1f - MX8MP_IOMUXC_SAI1_TXD3__ENET1_RGMII_TD3 0x1f - MX8MP_IOMUXC_SAI1_TXD4__ENET1_RGMII_TX_CTL 0x1f - MX8MP_IOMUXC_SAI1_TXD5__ENET1_RGMII_TXC 0x1f + MX8MP_IOMUXC_SAI1_TXD0__ENET1_RGMII_TD0 0x12 + MX8MP_IOMUXC_SAI1_TXD1__ENET1_RGMII_TD1 0x12 + MX8MP_IOMUXC_SAI1_TXD2__ENET1_RGMII_TD2 0x14 + MX8MP_IOMUXC_SAI1_TXD3__ENET1_RGMII_TD3 0x14 + MX8MP_IOMUXC_SAI1_TXD4__ENET1_RGMII_TX_CTL 0x14 + MX8MP_IOMUXC_SAI1_TXD5__ENET1_RGMII_TXC 0x14 MX8MP_IOMUXC_GPIO1_IO15__GPIO1_IO15 0x11 >; };