From nobody Tue Sep 29 08:26:53 2026 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 7023643710B for ; Mon, 10 Aug 2026 18:30:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786386654; cv=none; b=gOClw9Nx8jCSxk0kXf1ApTPgbCYByVt/fxjrpxAUYtaHKMJ+lwCjBk1/Z1oiOe5taDFj3Ji2HzwSQ/f/HGeMXZHLOp/dlAdX7KU/PDkiXYqhaw8sT49MUTFMgiNgGVqcHUMa6zR5cIDm1cw7I0e48NYzGHRZRBs9XIAPpzMfmDA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786386654; c=relaxed/simple; bh=LL8LPc2ObMc8bS8GZmSlJQ5MV4/P3HeJezRLr9CAz78=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=fu38IVHAOj1OuY8wz1XlVRKGgL4LG+8S0qRNQAe5iTApH8rtQjpiW8SihSo77nmZ9ODazR4pci500xJYH3Igq/2CLhSeyVyckwSKtOoZraMEc9Go4Wvazhm3WjJQom0Hiq6eKs3yUGhx48cOy7ZRf+C1Ic6k7zsHuLlQOXBU4Yo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=X0jXxhdb; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=TY0ZW4lB; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="X0jXxhdb"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="TY0ZW4lB" Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 67AGs5N42237321 for ; Mon, 10 Aug 2026 18:30:52 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=qcppdkim1; bh=x9vEpcP9MBZXX1DkqscHr3 laUSulESbFw0jUXKtXHN0=; b=X0jXxhdb/ND2LqZjtyO2bCnNSJZvfElgczmCrh iTRSAYLbrLtXx8HyHSewokymlkI1Rvoz8cunz0pfOWv+3AZFstPYJQc9AtWtFn8u ysjKrlJr24L83gNm2aVTDVqpKKY9xubcJ6wJLH41PMUnJwbzAFLZo4Ja/2NUdzBG e3Ydn0HQSNaskW0LFoY1PMYJkXUdg3cX+GjLOoZM/Rf5TKtCgsvYWsYTbXA+w4W6 Y3QjDu08HUjhwqhEXfwGM+xG/1mVcYj6Gx7ic8p1pD5KNyVQIMnuZWf1Qtqf0Gcw po6m+vclwkeuyjlsqQwiHjJ9J/f+0j9BLmwBdot4vBzwxUhw== Received: from mail-pj1-f69.google.com (mail-pj1-f69.google.com [209.85.216.69]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4fyjjtgcn5-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 10 Aug 2026 18:30:52 +0000 (GMT) Received: by mail-pj1-f69.google.com with SMTP id 98e67ed59e1d1-38e25e4b41cso2812605a91.0 for ; Mon, 10 Aug 2026 11:30:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1786386651; x=1786991451; darn=vger.kernel.org; h=cc:to:message-id:content-transfer-encoding:content-type :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to:content-type; bh=x9vEpcP9MBZXX1DkqscHr3laUSulESbFw0jUXKtXHN0=; b=TY0ZW4lBPd9f72UY9Nq4XM4X3XCacEX0HhgENeCfQZ1lpviED+y2A8RGOt4LbBrTSa q6+0JEFtACNKwwH641BvRDTtbMXCpW5I4bzR3WoE8xuTZ1IqSlIbUVgU6AGXShZ8ehtd D/l8juVYfO0lWoqJLzbih1d4wv8IjRfmpjz0As61Bp+xoXW+d/25VaCFmKHegB65yIB3 FVthe116F7s9WrCYL3hUMh5jTax4DivFg5ZZ/iJWzUTASlllybWxTWr3rQ5octM6DghF WVv4PusFPibmnXwHrTrRYzyElXyI0ighHs6tCMde8NSnsmquEvd9Qaz5aLUoNP9CSyvS ptAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786386651; x=1786991451; h=cc:to:message-id:content-transfer-encoding:content-type :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to:content-type; bh=x9vEpcP9MBZXX1DkqscHr3laUSulESbFw0jUXKtXHN0=; b=rnjumz5/rcEPCfi2zoLuqxpPU7QD5n6+LT+q2wD2NiDnJD0DZTWBcxkaLFw/TLEGlV 6jXlCi9X1Rc1tMo9g6s1YXXm6Mw51fa2asO5Sbm0x4Z97I/+xH5AxP4RDnBoGLQt9IQa LXrMG01I+/DihShwKcMYELVc2yCEL5x90n+Oe0ZznXxaChJaNoIuvnzizeD9aYcn+uQr 61I4x4j7sM6ENqtEyVPsV71x9hSCG1NOcI6SEuWt2ZHw1CZ1c961J1AKeF1jZ7p/+HWo /fr4wf52Fh5rhp1bqbfp/kQDV/9+YGdDrffEd2+E1SbpT7LaRXjY+Jp2RIdNgqKxnCsa +GOA== X-Forwarded-Encrypted: i=1; AHgh+Rpu1cvqCVIh9tN7tujUVTe1rJwcjEfWVi8diguiHPRSlP4REr8L+JHoClutQv/P+4tvpMAkelT/xT15sME=@vger.kernel.org X-Gm-Message-State: AOJu0YyqJFGR4Z1Ds2nAgRg/KsAzeiHi4h5AGHcEgPOaqbnoToI1iGQb fHQ8YoPND98mVdOqyrBBotTE1y58zAUuH9eXMy8pcY1sFaDG0qr3b1lhAOaFqp4ZRZKe0TBLW8z nMI7hu/KHAuH7J0UKUS0MXv/rjcXIycCWBxSl0PrvQFmkfbMFULIpI5x9tOrdJf/iy50= X-Gm-Gg: AR+sD12KqJ+P9jScGNenU1VdtLUymghzL9fpZKrrbsm7Wz64rDGMEaxU53+XO4hMFgr 2B0gy4yEwFhd2/UBd06AvQPnGvFJCHAwXsLnZmnFcZkVnkRdJcxnEPJvwyHT1GriYZ5R9OTakPF AZxqphYmmPwmqQVNeLX4yXSLZYtjRAjiursMPlt4HSy3MNZ0InxysXBj4Xh3rSWkDcv/DRjmBos rCmh/VfEBFm2vZJBBrTaeQnUUjHWiHznxejcX7M001KteU0bpCRf+7k6E/Nt8rb9PXV5wmRWMrE 6rpmqQruYTn8QFhjACFIuDyKGgudw3f81rMEfo9UMkW18xzNvQlXQ9hwu8wVIMuuj+N5DSVc6Yi 8ovu3JNOubI29AhFmNzm3CARgfJqDvoc4Cwoe X-Received: by 2002:a17:90b:1c87:b0:38e:97f0:aa4b with SMTP id 98e67ed59e1d1-392cca14ae2mr3125032a91.13.1786386651380; Mon, 10 Aug 2026 11:30:51 -0700 (PDT) X-Received: by 2002:a17:90b:1c87:b0:38e:97f0:aa4b with SMTP id 98e67ed59e1d1-392cca14ae2mr3124963a91.13.1786386650815; Mon, 10 Aug 2026 11:30:50 -0700 (PDT) Received: from hu-vdadhani-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-392d534abfasm526427a91.11.2026.08.10.11.30.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Aug 2026 11:30:50 -0700 (PDT) From: Viken Dadhaniya Date: Tue, 11 Aug 2026 00:00:44 +0530 Subject: [PATCH] arm64: dts: qcom: qcs6490-rb3gen2: Increase MCP2518FD SPI frequency to 17MHz Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260811-kodiak-spi-can-17mhz-freq-v1-1-1d99e360a7da@oss.qualcomm.com> X-B4-Tracking: v=1; b=H4sIANMYemoC/yXMQQ6CMBBA0auQWTtJBxItXsW4KGUqA7FgBwiRc HerLt/i/x2Uk7DCtdgh8SoqY8ygUwG+c/HBKG02lKY8G0sGh7EVN6BOgt5FpMuze2NI/EJvK2K ydeWChdxPiYNsv/ft/rcuTc9+/g7hOD7NHb/hfQAAAA== X-Change-ID: 20260810-kodiak-spi-can-17mhz-freq-c831e1893af8 To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Viken Dadhaniya X-Mailer: b4 0.16-dev X-Developer-Signature: v=1; a=ed25519-sha256; t=1786386647; l=1536; i=viken.dadhaniya@oss.qualcomm.com; s=20260324; h=from:subject:message-id; bh=LL8LPc2ObMc8bS8GZmSlJQ5MV4/P3HeJezRLr9CAz78=; b=qnlIGP3jkkLKYwseC7o8Dl0SGgmXfy/9v/sbEaRRMcNBNsZJBrLTdnpJvV0K6LlJfG4jWCqXa mjeH6DoorDlC0T+gvO2dmaYTO1zS0AfTVCm28Rg7Y8va2aLO1JrxG7o X-Developer-Key: i=viken.dadhaniya@oss.qualcomm.com; a=ed25519; pk=C39f+LOIGhh/02LQpT46TsUSXRvBn9qXC8Xb26KJ44Y= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEwMDE1OCBTYWx0ZWRfXwOH6DsUdL/pJ j8z1rMcIkRRPdpWporIfMXxiPgd77/NqgMksEuwKzR4L38RXUvNR1NQ79gaEoRazA0AuW/K21D8 mKf+eM7KlDuK8ddZ2T9GPFz7AL+9gBhPEtFAA8Lp3KuhGdu+NBEu11riS8FfzqTIOll8lpgA1P7 gyFyztJHcX/wXw5ez60+uFhd0NoSBsPkPqp9tpnyoVnNc7NQjpyO5noEdCuLf3rmM/8azZvISPV oxNoESoriV0aSEAO7rqhzHL+eynJV+cByW4kVO+EpCcZbJQy4Dd9W9+3Y+KH9MGlqs+2WyLRFSM rxOo6PudXxvOVLgi3pttXSNyx8gNBtSnwTWWBB1gh0vCsSBpyRiVoCDnqY7J3VuDOTYth0b+NmK kDTK8iAYEHyfwtsVVE8H/kbeLSoBfbbetGnmPXMiRIlOpLX9BIGZgDjYJrJYIe7WFUNDL6JWkmJ Bs4Swoab9iK1t4+JF7w== X-Proofpoint-ORIG-GUID: hUap9infWIpppbzL024Ze0pSYncJzo1B X-Proofpoint-Spam-Info: AW1haW4tMjYwODEwMDE1OCBTYWx0ZWRfXxBnh9nADvstV yPCfSt+AFFvDWNIk54VdfaygsQPEghtbHMZnBoR4u14ANT7L69WmOQqSYFdm32oZZ/1yzZzLwYg OI+HmczcRLeqM0OiF5Oi7eparAPjAy4= X-Proofpoint-GUID: hUap9infWIpppbzL024Ze0pSYncJzo1B X-Authority-Analysis: v=2.4 cv=JsHBas4C c=1 sm=1 tr=0 ts=6a7a18dc cx=c_pps a=vVfyC5vLCtgYJKYeQD43oA==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22 a=EUspDBNiAAAA:8 a=80-5jTl7eJ6bZoIGBT0A:9 a=QEXdDO2ut3YA:10 a=rl5im9kqc5Lf4LNbBjHf:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-10_04,2026-08-10_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1015 adultscore=0 spamscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 phishscore=0 impostorscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608100158 The MCP2518FD CAN controller is limited to 14MHz because higher SPI frequencies are unreliable with the current SPI3 pin drive strength. Set the SPI3 data, clock and chip-select lines to 8mA drive strength and raise spi-max-frequency to 17MHz, the maximum allowed by the MCP2518FD errata: 0.85 * Fosc / 2 =3D 0.85 * 40MHz / 2 =3D 17MHz Signed-off-by: Viken Dadhaniya Reviewed-by: Dmitry Baryshkov Reviewed-by: Konrad Dybcio --- arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot= /dts/qcom/qcs6490-rb3gen2.dts index 90f2eebc349f..eb8d83317f36 100644 --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts @@ -1105,6 +1105,16 @@ &pon_resin { status =3D "okay"; }; =20 +&qup_spi3_cs { + drive-strength =3D <8>; + bias-disable; +}; + +&qup_spi3_data_clk { + drive-strength =3D <8>; + bias-disable; +}; + &qup_uart7_cts { /* * Configure a bias-bus-hold on CTS to lower power @@ -1233,7 +1243,7 @@ can@0 { reg =3D <0>; interrupts-extended =3D <&tlmm 7 IRQ_TYPE_LEVEL_LOW>; clocks =3D <&mcp2518fd_osc>; - spi-max-frequency =3D <14000000>; + spi-max-frequency =3D <17000000>; vdd-supply =3D <&vreg_l11c_2p8>; microchip,xstbyen; }; --- base-commit: 0f6da28aab51b16762ed82e8fdeaa5042da45b08 change-id: 20260810-kodiak-spi-can-17mhz-freq-c831e1893af8 Best regards, -- =20 Viken Dadhaniya