From mboxrd@z Thu Jan 1 00:00:00 1970 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 5E6FD2192F5 for ; Wed, 26 Mar 2025 17:56:09 +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=1743011771; cv=none; b=R+fB1pZOB+PtyXsu8v3B2ILkzzrl62sb/o1+a4frp49874MvBTol+Z2PGQGg88BogG4UpASCFWHNXDqEuzeAO8guh3W9uXY9FssMawBmwHI6vna0POzQ/suAr6MEqhKNTKJ5els/n6E7qbhHh0ZBKX5H4uhl7p8RlHk2iieX0Vw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743011771; c=relaxed/simple; bh=FOIE47d2wp0LC0VDLsB3snc29xU6ss8U478EjWgM9Gs=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ZOGlZscxIExNXaTxLO/B4Mb6W/U2qg0PilODJMXa4WkvJfFpDwUITDBbFqZUpwcUKiBxkS8n9/q0NuDV0SaLJ44ZjYnB89NY/PcRZyGzC6TPVtJC0pcfRsVZ7dwzHtCH+aktQ+UfeXZE4dlSTJvok4qXrq7QFx7dEfLOkUyz5KI= 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=MMaLDRUC; 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="MMaLDRUC" Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 52QFKtgn029945 for ; Wed, 26 Mar 2025 17:56:08 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= Lxqno0230pcqB0H6Ol9XwwTC6E/yX89Z1LsI9uh3Cpc=; b=MMaLDRUCBI435iSA aGUj+zJEParOZXAr3hFQYuqXY29BDofFSZbsPunJ1/4bkUMNbmhKkFa/AT/QTHJU deOdmcufix7pePxdTkCP9L9hLSl8RP+J7YPks6WkzgGRG08tYpqYe2iRaHMG3iLM UhxVjWce6vrYHPBzRWJ7ddEYccu7YTjnMqDfwatbP75/o+auzdxDaGDY+xTrzwQ9 +f+C+gObVekxoXb1ibmLI0xUtBzi2PXnPEgCZTKcplNaaIi6B20xMeP9CQhgigPN QJK3QrjfrDXR2cBcTWHIyXuVdEBLpC8lyaBprzLcBwu+H9tWyKiws/DM1N9KYZng UOoLpQ== Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 45ktencqcg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Wed, 26 Mar 2025 17:56:08 +0000 (GMT) Received: by mail-qk1-f198.google.com with SMTP id af79cd13be357-7c5af539464so4871885a.0 for ; Wed, 26 Mar 2025 10:56:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743011767; x=1743616567; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Lxqno0230pcqB0H6Ol9XwwTC6E/yX89Z1LsI9uh3Cpc=; b=TY+6JQXRaKK2k+4sCwlYzhZtwLzlKT7K+syAG8kO8UCLRoFdW66A1wbuHj5oBEsA3N J/u5dLBF+gSURRT43rTy2uIFe1lxBgFV9RLRyjSTS4GT8KEdggy/fy83M8rsI4iCvkj7 bCRpendb7nrVh8xdSm3Nw709Cy6FpsITfhcXORpbUBXSXeqKmlRUXuLPkO503n8i8DRw vsIVHZNiYF9zX1dNleNpPy+Awe2/+toAeHM8d+n7Cy2Piz3ja13m1WjWR6eN1b67mPfU IC5Y+QFVUygJNI1YM0LdSbAdH9IztBaCxIvTN12NUuy6FM0vQFNqT6pbHTgqEfFikLO4 bDlw== X-Forwarded-Encrypted: i=1; AJvYcCUTZBGBcXIARRaFtU7+W051epNxlsASX6NALwGh0uEsPUeQW5JiuPoDxEP4mLcPv5I6kIdBgZGnJCjeLnM=@vger.kernel.org X-Gm-Message-State: AOJu0Yzn/erBHSSli4ww1K7aKVsIeJuZPnl1WLfIS2QVk/x07PvQWQDA O/hre7jUyj+L9RMjnHB7WZTg8OJv20+CBA9can1BESCWRGBNAogaBnlgPG9a4/8eeOClTVLXOvH AVPCnVVRewAxutYnGGdzBZWTqYsmyl4pxLjiN8BvBNqWC93fQxq89WaXlgyXPl50= X-Gm-Gg: ASbGncs0QNeF4kHJrOtPBLyMqtv/MbFReEwGXPO9Hdm8rXU/wnuQYzAiL0yCp5VQAWx iss1BMEKtYjwlQwHFBDjX/CgmxgYP8h8ffC4hcpFvlxwUBLyswd/npjxqulYhELR76mB1FGHsZE qzRlPkzvcKvhfv+XgEGodttzkk1Cxh0n+5ABPMYzk+5dbifgOGy1wwXat5Vx/swDz29o3ye4y8b i9Pii14oCEXsSNsBUuwLNgThXIawM762VZ8smjWA3mTKQFhV6rWfOQIOO1Uwo2ckHZAZhTLStfE /cQS6Wq0rfuACujAVC6agP12awbjA8kGzIogAav8w+SX3fZSgaqVqz3YRSuCBOeNH9LJDg== X-Received: by 2002:a05:620a:4588:b0:7c3:d752:f256 with SMTP id af79cd13be357-7c5eda1ef32mr33500585a.7.1743011767153; Wed, 26 Mar 2025 10:56:07 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGPo1a1tkN/XZXeNGAAUJcp1b82A8YyOkx8pDC2Hf99u7C+rn8fvVrRAP5A3JMYBukqijRm1A== X-Received: by 2002:a05:620a:4588:b0:7c3:d752:f256 with SMTP id af79cd13be357-7c5eda1ef32mr33498785a.7.1743011766592; Wed, 26 Mar 2025 10:56:06 -0700 (PDT) Received: from [192.168.65.90] (078088045245.garwolin.vectranet.pl. [78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ac3ef93e5cfsm1073652266b.82.2025.03.26.10.56.03 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 26 Mar 2025 10:56:05 -0700 (PDT) Message-ID: <0cc247a4-d857-4fb1-8f87-0d52d641eced@oss.qualcomm.com> Date: Wed, 26 Mar 2025 18:56:02 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 1/7] arm64: dts: qcom: sc7280: Increase config size to 256MB for ECAM feature To: Konrad Dybcio , Krishna Chaitanya Chundru , cros-qcom-dts-watchers@chromium.org, Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lorenzo Pieralisi , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Manivannan Sadhasivam , Bjorn Helgaas , Jingoo Han Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, quic_vbadigan@quicinc.com, quic_mrana@quicinc.com, quic_vpernami@quicinc.com, mmareddy@quicinc.com References: <20250309-ecam_v4-v5-0-8eff4b59790d@oss.qualcomm.com> <20250309-ecam_v4-v5-1-8eff4b59790d@oss.qualcomm.com> <3332fe69-dddb-439d-884f-2b97845c14e1@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <3332fe69-dddb-439d-884f-2b97845c14e1@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=TuvmhCXh c=1 sm=1 tr=0 ts=67e43fb8 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Vs1iUdzkB0EA:10 a=EUspDBNiAAAA:8 a=KKAkSRfTAAAA:8 a=hNMOycGrYB8S6Zk86AkA:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-GUID: xdCH-TnNjzapBZsFD0YfrQ2W0k2zfu-B X-Proofpoint-ORIG-GUID: xdCH-TnNjzapBZsFD0YfrQ2W0k2zfu-B X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1095,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-26_08,2025-03-26_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=852 malwarescore=0 bulkscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 adultscore=0 phishscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 spamscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2503260110 On 3/11/25 12:13 PM, Konrad Dybcio wrote: > On 3/9/25 6:45 AM, Krishna Chaitanya Chundru wrote: >> PCIe ECAM(Enhanced Configuration Access Mechanism) feature requires >> maximum of 256MB configuration space. >> >> To enable this feature increase configuration space size to 256MB. If >> the config space is increased, the BAR space needs to be truncated as >> it resides in the same location. To avoid the bar space truncation move >> config space, DBI, ELBI, iATU to upper PCIe region and use lower PCIe >> iregion entirely for BAR region. >> >> This depends on the commit: '10ba0854c5e6 ("PCI: qcom: Disable mirroring >> of DBI and iATU register space in BAR region")' >> >> Signed-off-by: Krishna Chaitanya Chundru >> Reviewed-by: Manivannan Sadhasivam >> --- > > Reviewed-by: Konrad Dybcio I took a second look - why are dbi and config regions overlapping? I would imagine the latter to be at a certain offset Konrad