From patchwork Fri Feb 18 12:04:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Teresa Remmet X-Patchwork-Id: 12751418 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 16924C433F5 for ; Fri, 18 Feb 2022 12:57:24 +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=v+u1GvVHr4hO1J QARcgSJJqdaE22NPhnkDWfeK0WIzicdMkCyzyGmoNBbVbi2qtXTjgYXoZnxO//LGWJcHJnAMWmKNp qIrwEsC596jXIOThgEZtWpye7RF2Ze0xE9p1pWYEcNVYxHtLfoxdcb6jTNscLqaM93JuHXWelnjFM DHIW+MzuH+XiDIZWGv4RTiy9CvBbw+PSsDCDnzVGJDSaNYFJHcP8zq6nve6XzZ813toiriJc7olzK 7yDYKiAlCPVm8YqgxYDM9VD07PhSFiH/G9GLMiuy3//2UnCUyg1oytC3b2xsvL+EJVNAGz+Bshw3f zGVujjW/Jo6pjhOqAYZw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nL2n8-00ELEC-Vt; Fri, 18 Feb 2022 12:55:21 +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 1nL20d-00E8Ij-Vg for linux-arm-kernel@lists.infradead.org; Fri, 18 Feb 2022 12:05:13 +0000 DKIM-Signature: v=1; a=rsa-sha256; d=phytec.de; s=a4; c=relaxed/simple; q=dns/txt; i=@phytec.de; t=1645185900; x=1647777900; 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=XEBRHLvldd8e8GlhG3iw2I32ekigWcRrWFHWR7h6EaJTvmtwNe1OXzJqNo6FcWoH AgpjliiHbA+ClGdOi+xZ+Qzji/4clnnYQqIUFVEr8a/iQSl8jRAa5M/JtesA7i16 G6Oo4WM8rofYtGui1w6oQUYErbmy8dCGuTS80kve0UU=; X-AuditID: c39127d2-9112070000002a63-c7-620f8b6c33e0 Received: from idefix.phytec.de (Unknown_Domain [172.16.0.10]) by mickerik.phytec.de (PHYTEC Mail Gateway) with SMTP id F1.8A.10851.C6B8F026; Fri, 18 Feb 2022 13:05:00 +0100 (CET) Received: from llp-tremmet.fritz.box ([172.16.5.100]) by idefix.phytec.de (IBM Domino Release 9.0.1FP7) with ESMTP id 2022021813045994-312406 ; Fri, 18 Feb 2022 13:04:59 +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 v2 3/7] arm64: dts: imx8mp-phycore-som: Reduce drive strength for fec tx lines Date: Fri, 18 Feb 2022 13:04:54 +0100 Message-Id: <20220218120458.14036-4-t.remmet@phytec.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220218120458.14036-1-t.remmet@phytec.de> References: <20220218120458.14036-1-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 18.02.2022 13:04:59, Serialize by Router on Idefix/Phytec(Release 9.0.1FP7|August 17, 2016) at 18.02.2022 13:05:00 X-TNEFEvaluated: 1 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrOLMWRmVeSWpSXmKPExsWyRoCBSzenmz/J4GQPp8XDq/4W/VdXMlrs uHOf2WLT42usFl2/VjJbtO49wm7xd/smFosXW8QdODzmzTrB4rFz1l12j02rOtk8Ni+p99j4 bgeTR/9fgwC2KC6blNSczLLUIn27BK6MfZ83MBZ081VMmj2LuYFxB08XIyeHhICJxLpz/1i6 GLk4hAS2Mko8apvFDOFcZJT4e3szE0gVm4CGxNMVp8FsESB7StdjdpAiZoHZTBJ/JnYDJTg4 hAXiJBa2poHUsAioStzf2cECYvMKmEt8n/KdFWKbvMTMS9/ZQWxOAQuJSc+esoHYQkA1076u ZYSoF5Q4OfMJ2EUSAlcYJSbf2wDVLCRxevFZZhCbWUBbYtnC18wTGAVmIemZhSS1gJFpFaNQ bmZydmpRZrZeQUZlSWqyXkrqJkZgYB+eqH5pB2PfHI9DjEwcjIcYJTiYlUR4PxzkTRLiTUms rEotyo8vKs1JLT7EKM3BoiTOe7+HKVFIID2xJDU7NbUgtQgmy8TBKdXAqMjdxLe0geev5ENm sa83ny6RPjY32fIAV77Hmx8z/F09Xry/9m3No97yLR7c9bHX321uVObPP+C46vOLZm4r4+tu 9/ZN/byq7+MK/SY37b3tk8UPzLt9b8m8uTozc4/f9/qhf7/WfsVzZrcffuseLut295M3O8Js 4LuW38TBS/ny//zVoZt05yqxFGckGmoxFxUnAgC0x0eWWgIAAA== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220218_040512_220878_05B737F1 X-CRM114-Status: UNSURE ( 9.49 ) 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 >; };