From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 BC4F73191D3 for ; Thu, 10 Sep 2026 06:47:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789022855; cv=none; b=oOmqDFIZsOaTlz4X24gCNibPaYQqKS0HpfHG9QcJpfuGFdVg6NnHZHmKliELiVrdSeVHu0L+mD+lnWQla1LNAGJtJjxe/DLyhSNYpNgn/GDEOXKNT3CSgudZyHcw0SUvF/r8lR/WQLsIzvAZcgeI7ZIb7VOaBC9HoLVUVy4vtDk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789022855; c=relaxed/simple; bh=DxoTJMN/+LqAjPVtnWiKH/bCmxKlerXb11PgAdqBhaI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VJHq2Wy01VPnLgA1Op2Mtv8CkmsPmaVrvxWxgqRq4+vpr8lwJK3rmRsRJgN6zAulGGoQwpr5a8xUBaptm+mz0H4qLyarjunv74wt6mKvbq9Q64cGzDxTF/Ec972lvb5DZJDcZ71PqfAknFAP4WCiW4yoFD7pl5H3X43DsTQbfJE= 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=ETH+St8D; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=Sd7FK2uR; arc=none smtp.client-ip=205.220.168.131 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="ETH+St8D"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="Sd7FK2uR" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 68A5Gslc810342 for ; Thu, 10 Sep 2026 06:47:33 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-type:date:from:in-reply-to:message-id:mime-version :references:subject:to; s=qcppdkim1; bh=YFPGqIoHsHzOQ/AB7GpsF1lM lefggCSvMh3OTOdNvHE=; b=ETH+St8DBeVm5VrpEeOhD9UdiWWjSt3eN1NMZpCE yNowZjNgaDUR9XltGCKhPsLZhsNYSU7HYlE+Z1dRVTBp/90tBYeXGr6ZPBkZKD94 V+QVJD3QTWoPxhdrDsSSPbf9SDdyw8QoCYZBdMM6swuVcKLJziYkzO9eW6lWJ8Gm hhaArxqZGQyi8MzbdC/02+oZ3q3wJ3nMoDXfcpsE0jyGPK3qj/GKUCei/tiRPQ2w GwX6qhSSmNM4t8f3zE1tQRKhcISaUO12rTh7UPBUQyWMzIMJVkGyHotBFqAw/KHn EYstR7gSaxEgQ7fqKN7GoxOQhcgscBZpSmsbQSQkrrp2jg== Received: from mail-pj1-f70.google.com (mail-pj1-f70.google.com [209.85.216.70]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4gkcydjfrv-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Thu, 10 Sep 2026 06:47:32 +0000 (GMT) Received: by mail-pj1-f70.google.com with SMTP id 98e67ed59e1d1-385d2703b64so824345a91.1 for ; Wed, 09 Sep 2026 23:47:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1789022852; x=1789627652; darn=vger.kernel.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=YFPGqIoHsHzOQ/AB7GpsF1lMlefggCSvMh3OTOdNvHE=; b=Sd7FK2uRA5lOnndneZA+n5H0eWXn5zLS9QxQmhtkLSGEaB57m/SRgBge5vsOJab6a5 sIOkzdEM2vQSL+0wf2vv+306DTa5+wvf1MklNzunwKpqtysL57zpUvHgwrl56kucp7kZ /EyeqtyAV/XfvlDG5MLp1WIbUDT+NffDdkg0CWu3WEBnJLQFg7zNNlZJV5aKxgabvDQS 7qasiR7rLDVlkFQB18voYUe+usemG1KL4MdOzdH98yWMoRWefeRBYNnbG6hgM+FRLdpM 3oQFohgiGjOfreBAoRbil4F1sJK7BnpyiKY9/Q2cEZ7D7o3vUKT4EsTBrvOhD3qBZmSF ZOJA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1789022852; x=1789627652; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=YFPGqIoHsHzOQ/AB7GpsF1lMlefggCSvMh3OTOdNvHE=; b=M2Sbu5sg8nsmXCbScqjg2HuK4YuQkg4tnHMW5RlMIucWYi6uKv6fXO5EFD8tgJowJQ qRVzFCvcnxhzVFbHczvKt4rIBReIKkjfQmmLABUka14FF/e7QbWwraXMJ/3386+KiDQ8 sbumHeMexGjQ8f4XrU/X3r2LJU7dLY8qLMc+b1kDfzytwuDxyZnD8fpab3M8EXwOaiuQ /o53QktKDEn2Xdm6zBASd+x226DvVbMLyLbYJ+cv4E+RFH8YQF0yMWM3ov0b3fZBkcIh Pxj4BVV5b8sT993Gkx3r5eokfga4sFzuvntmuMMzhkQPbkOGFfl4yGsSOF0Y9QzexF7e DoMw== X-Forwarded-Encrypted: i=1; AKwUvBy3Z21XuAJyPSG1ss6raT1D2+wdn7MCIk03bB/Zc+6AoI3ffZlulnRAnTfi6nNEHuK5jAvhJ9KUp69B@vger.kernel.org X-Gm-Message-State: AFuF++m97KARObiZqbDaZXos3i9d7FeYr3poIIcMKZA1L4C4k47vNfSN DRPORfmxz9Zhw3yd5RAEdELVoJtdJeb0NojA3SL3BB5bL/RT82XuRf4TzL/+9aCThq8D8bZ5Aa1 BFMD34ftrBMdfdrD4A9URb+5aS4xbtcHb/SQK+nOa8RayHcjXWSIxR5QdLly/ss82 X-Gm-Gg: AYBFou0apckHx2Tq7MiWhEBp+w6Lvtd5Gjnshn9P7vDgHhvdIUMLT4T/+urosp2v7Ld hImvOhM29IbO4iqoM+Lzqo9DOqu++M1kVFtjMBdKkFW+mkbDSNIEYD515aMKdmLgjNLhCCZJ8Yy 5paWBbOE2ArhPyLcBIDvjIEOpnf6MU+3A1FPGt3TgBs+ZbjmnhM/vGUgpyuHuQRVKSwZ/Xs00By XIBWeoRxpWbzQMGFW8q9llyrFGI20CAreYcb5E6DBnaZUKw+rr33bdaQU2MYeDvoN5NHPWLt2rp 6K4t0VpZ/3Fo3EFPDGguKsxV0mx2tX3e8SERI5Xls74+F2Wk7GoAyGuMd8lUiz00DRebZZfTre2 b0ceBql6ysKl3e7BLDelE+3b0/JiGXEOViK/0Ck5/ebI= X-Received: by 2002:a17:90b:4fc5:b0:398:ceed:b903 with SMTP id 98e67ed59e1d1-39d77962e6fmr4114541a91.11.1789022852307; Wed, 09 Sep 2026 23:47:32 -0700 (PDT) X-Received: by 2002:a17:90b:4fc5:b0:398:ceed:b903 with SMTP id 98e67ed59e1d1-39d77962e6fmr4114497a91.11.1789022851799; Wed, 09 Sep 2026 23:47:31 -0700 (PDT) Received: from QCOM-aGQu4IUr3Y (i-global052.qualcomm.com. [199.106.103.52]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3339aa37dbdsm42950318eec.11.2026.09.09.23.47.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Sep 2026 23:47:31 -0700 (PDT) Date: Thu, 10 Sep 2026 14:47:24 +0800 From: Shawn Guo To: Krishna Chaitanya Chundru Cc: Vinod Koul , Neil Armstrong , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lorenzo Pieralisi , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Manivannan Sadhasivam , Bjorn Helgaas , Bjorn Andersson , Maxime Chevallier , Philipp Zabel , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Konrad Dybcio Subject: Re: [PATCH v3 3/5] PCI: qcom: Add CGC disable workaround for Nord PCIe Message-ID: References: <20260909-nord-v3-0-b0a82721c547@oss.qualcomm.com> <20260909-nord-v3-3-b0a82721c547@oss.qualcomm.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260909-nord-v3-3-b0a82721c547@oss.qualcomm.com> X-Proofpoint-Spam-Info: AW1haW4tMjYwOTEwMDA3MSBTYWx0ZWRfX0nYUzWc0aEZv ThOaXVRRoeATRqU8V3dA0hnTYmus2Tr0J5VrRKH8ufgTh2pQCjGl05UBS/O/UJ9hJFIpL+HJoM6 FejedZZEbb3El7yTcDVv6fGaFVchQPs= X-Authority-Analysis: v=2.4 cv=UJNIjyfy c=1 sm=1 tr=0 ts=6aa25284 cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=b9+bayejhc3NMeqCNyeLQQ==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=Y4sVft1UDeOkrP7wHAgA:9 a=CjuIK1q_8ugA:10 a=zZCYzV9kfG8A:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-GUID: vh2VKP0e9-jZlqyal0MuJF_dSbYkKV8M X-Proofpoint-ORIG-GUID: vh2VKP0e9-jZlqyal0MuJF_dSbYkKV8M X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTEwMDA3MSBTYWx0ZWRfX+u5km4I4zWa7 V3Cslz/7gdiMO+nszIEHb1FooNFj4aqK9z6wUuKigK7vnJIvd8BhapT5LthD6B9s3fLyth1xl0T QYc1MTU5AlEUJpSU1UNm5iv2vvd0yq7SXY5+aHMfRkC5nfOMO+aqqTd/0moZg0vqd1pm0j7nNlT 5LaA9+cnt2xlnsQa0j+/X1I3tIuJbLMymYsMbw5f2hxmBpOCCDcTuU+JYH3EB3lWfscJej05MWT 8Cwf/IoltBqypuolbsVQ1G9YYN44gTs+s63TIP8tALvpNBPY119G1+nng+hoeHUiNTId88cH2el TquJBNTm6fQ92hIyI+J6bz7XJcLYRMomD0fmMlz7Qsm49mal5HiM3GnEJXjoHMm9iFw7Qdig3y0 GgKcwQrQdMl93ZQOPZANtCL1u8R097sGT9zf2VomY/lpkr99XGAel/CnUO17h5gnegy3TNDTMo8 k4yDB0LTPnr+NIQZP4A== 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=2026-09-10_02,2026-09-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 bulkscore=0 impostorscore=0 clxscore=1015 lowpriorityscore=0 spamscore=0 priorityscore=1501 malwarescore=0 adultscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609100071 On Wed, Sep 09, 2026 at 05:18:18PM +0530, Krishna Chaitanya Chundru wrote: > Nord requires a workaround to address a timing convergence issue in the > PCIe power domain. To avoid the issue, set the CORE_CLK_CGC_DIS and > AUX_PWR_DET bits in PARF_SYS_CTRL after controller initialization. > > The SLV_ACLK_CGC_DIS bit is already configured by hardware reset. This > change adds the remaining required settings as documented in > QCTDD11972446. > > Reviewed-by: Konrad Dybcio > Signed-off-by: Krishna Chaitanya Chundru Reviewed-by: Shawn Guo