From nobody Thu Oct 2 14:27:44 2025 Received: from finn.localdomain (finn.gateworks.com [108.161.129.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4872F37C0E9; Tue, 16 Sep 2025 16:05:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=108.161.129.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758038736; cv=none; b=X7UG41Y2EaOWzOxOIlRhEM36rqrVxDPWiMSBdbMEWUNX3Z31wRXjbyg8gsWNuOEiKHhtvs7x18E344YOjuE6DBqQb6VwRnSD+ZDwbPvsglc9J3tTdIJZoj/QLQePOM5e0AqMLNEPgG44rYoqh5Ps8tY2W9vq9NSz7lR30lH6oRQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758038736; c=relaxed/simple; bh=HcrtBLMHDV+d3oI6gmI8B3gvHZJyxf77NUErlncECrg=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=KHgFXyAOZtT57nJU3YdqJBQaUtC3WhVJr4pm8a+y0uOdohSoqgxwy/rWr0p0uDZKPYV+ymDBVIwWgcemRS30FEUne34tpgaCI3t0E9quIkMlT9OImIxzvR0rlPA+f9WA0x36pj90tgB8Ze7e24rsu8U/8GefQxbIOszm6tyTcGE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gateworks.com; spf=pass smtp.mailfrom=gateworks.com; arc=none smtp.client-ip=108.161.129.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gateworks.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gateworks.com Received: from syn-068-189-091-139.biz.spectrum.com ([68.189.91.139] helo=tharvey.pdc.gateworks.com) by finn.localdomain with esmtp (Exim 4.95) (envelope-from ) id 1uyXfK-00Aysu-8N; Tue, 16 Sep 2025 15:32:22 +0000 From: Tim Harvey To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Tim Harvey Subject: [PATCH 4/7] arm64: dts: imx8mm-venice-gw700x: reduce RGMII CLK drive strength Date: Tue, 16 Sep 2025 08:32:13 -0700 Message-Id: <20250916153216.1042625-5-tharvey@gateworks.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250916153216.1042625-1-tharvey@gateworks.com> References: <20250916153216.1042625-1-tharvey@gateworks.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The i.MX8M Mini FEC RGMII tracelength is less than 1in and does not require a x6 drive strength. Reduce the CLK drive strength to x1 for better emissions. Signed-off-by: Tim Harvey --- arch/arm64/boot/dts/freescale/imx8mm-venice-gw700x.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw700x.dtsi b/arch= /arm64/boot/dts/freescale/imx8mm-venice-gw700x.dtsi index baf46fe28133..dca213c85cc3 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw700x.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw700x.dtsi @@ -446,7 +446,7 @@ MX8MM_IOMUXC_ENET_RD3_ENET1_RGMII_RD3 0x91 MX8MM_IOMUXC_ENET_RD2_ENET1_RGMII_RD2 0x91 MX8MM_IOMUXC_ENET_RD1_ENET1_RGMII_RD1 0x91 MX8MM_IOMUXC_ENET_RD0_ENET1_RGMII_RD0 0x91 - MX8MM_IOMUXC_ENET_TXC_ENET1_RGMII_TXC 0x1f + MX8MM_IOMUXC_ENET_TXC_ENET1_RGMII_TXC 0x0 MX8MM_IOMUXC_ENET_RXC_ENET1_RGMII_RXC 0x91 MX8MM_IOMUXC_ENET_RX_CTL_ENET1_RGMII_RX_CTL 0x91 MX8MM_IOMUXC_ENET_TX_CTL_ENET1_RGMII_TX_CTL 0x1f --=20 2.25.1