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 E99C63559D6 for ; Mon, 21 Sep 2026 07:37:22 +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=1789976244; cv=none; b=rUKtOEhiP80d/18WJAGJ6xxvxIfu5/8gH43M9Ny2QRWPnPJfNsjI8WvDfY9zMRqQr0awKf/zI7asdB56g7oemCbEBh0n8QLnCkrB0qMlg/KjvSsbRCOP2qMm0Eu8j+b0stfrui7Si+Vub4vrVbUJe+hW5wfT0fWuLNx8hL6BE/8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789976244; c=relaxed/simple; bh=zn/AZhlI9NSBovtLHa/ZrSMdu0QzWX4YxJ9bkOoAWso=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=c0+wdwOvrqi4CZLGJXiOb6rxVlF+iznLY7e9M1GP660RBTrIBIRVJebiRHZHTHv2AIytMehDvIxh07QP10pfWXXi5UFjp1aBUK2lE7NUacNXnpJSY8b5xvxGl1T1FyVgQGwDwjFCXmZNq9I5a/AvEt2P5AEY1Ti0TrhXvJlahDs= 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=jVZ/bqTm; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=Gs/3lb5F; 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="jVZ/bqTm"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="Gs/3lb5F" Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 68L79rS01624318 for ; Mon, 21 Sep 2026 07:37:22 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= H4vkek0/ZbqGdMSZk4suthyJcTIAG7Z7PUDKSg5AbNk=; b=jVZ/bqTmgndhwE0J coxsNZ8+mrbKWW8CHCFPd0t+2fILFKxyHNCEub6ZxeOTHlwARyBQ4uOaFygaM2W7 TicckL2T2tHhyKid3cooofHbUM18EvMktw12QbEOHx0famlhHi25FpgAxNFa7nN2 malkcqr9k76IsdfGnvSgFbsVU4NwrfCObSs65oP6gxRVz2jvbJLGmfRTgBUXFlqE JJvAyLq2tyWluHF5FWp42RvvwVOs0UXml/rDih1aqYlbAQzsod04Uq+LD7ovmF9G eRIh8GSF6lyoIkX/Aaje21x+hQj6J+gqevKfospTyywVMcV5D+YbPXFN+mPZTykV uqr8AA== Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4gtt3ws6u7-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 21 Sep 2026 07:37:22 +0000 (GMT) Received: by mail-qk1-f197.google.com with SMTP id af79cd13be357-93bfab40895so20887685a.3 for ; Mon, 21 Sep 2026 00:37:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1789976236; x=1790581036; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=H4vkek0/ZbqGdMSZk4suthyJcTIAG7Z7PUDKSg5AbNk=; b=Gs/3lb5FKOcmcroC/9FWcR2LaGHwfguSWEu0/w6dhXMwpTSk3uj6WDalDra748Zcs9 G9jrdHBAL8pfgRpWhGnQ6kGuLTz5ZlwWLwj+PMTGWg2ystBkWi1MRfSdvPUNnIr5kpDz InLQTuh4dmtNgdQHgFzxCrTgeomXqyYbbZ97ymfZS26jwxCbedLEMldglfAW9HxSNZiY EW0NvwkmD4zUt9+YknAbnz1/lbHzRPf4+9s1KH0d+l4lMK1o+LfKDqRXEL5R/1rBoT0Y 7tTR/SIHAjnepcYwyGCrGRKR0unwMaTaTisGvahb/dEFNc9N69pG8ODP5o3FrOgwNBkc 6H6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789976236; x=1790581036; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=H4vkek0/ZbqGdMSZk4suthyJcTIAG7Z7PUDKSg5AbNk=; b=obkpsyMeIsv/YguLg327i6hGW6TKBBiDqhl8S3usQSI9EF+wQSM5ItZLGslSsim0s2 mxdipD7CzduzymLZuql6Sd8DFuEr0rju6dQchjLkAy3KhEAzqkAGH60tIP3BZIiZ6jjc DPHEcWsbNu3MeKHOZYaHx2ergDnX/2FkZEsVXGI1gX3fQrGrsyIzm6eRO6f1u3+Aou7Y aW1+UMaGHpubN7zeVRJ+3biuFvNPfd+vouLenCZqs2zHDCZiurTn/FBjPjPf6XSFNQ0f SRSA/84hPUmE0rmsiX9zdCBAVSCotyjX4Ou7RTySD1Z8cG/TONAAuElYNl2aUsXD0b5b wjgg== X-Forwarded-Encrypted: i=1; AKwUvBzOByfoYLTZTLTKPUffKHWgFf8EjaQJE6zW1u+B6uvDG4gqh+EVFPImeBVhD3tpvtQ0q/Fwl+u6R407@vger.kernel.org X-Gm-Message-State: AFuF++nMyL/hMhEzu0zVZd4XFzLyZSm8mPzM1gbw7XAUaXbiso30CLe4 5KoCaX4qEkCXxETWh7rcdqvm1k2a3OnFQYKuZ6Pjg34UUYUsFrOtVzBZZEPNTOdbS+RY2XXvXWv vW0/aypZlDAOrK4UPR0KCNyKkBUM7jrmau48UiOB/67gcyVOlKzADlQ5GNFElRjm/ X-Gm-Gg: AYBFou27PriF9qn5srox5DhiXCFX2s8UNtQTjbJ/8AG5Nl07bLOdzaPi8yvt32te4IR Dbb96Gb40L5Jg0I5DVXHVCgfrRyUnzaULtgr+YG22fimL/C6g/+r4HyrXfI5VdxV27CD7FcAL1d O5v7Cif8teDkxJEMT9t+6Fl6HiEqGqxdiMdcE0bgNldH2Awc77zXJ2olzDhrRCqmnJbBBTsk3bX pppwVC2GXf9TtUofegmf+sVd61In/WbLundB5QFo4EZpq7Uw/Mk+3xnrCU23LXT9jshRoyVyrM3 A55n4iRYQBUsBp7u1bUNdguIYiPeg1u0E7b1/BtSZ8a/7GpJhMtOduMM531XxpzKLla+pUEib2i +DegxFKbzEuq8K0DFssGNPA== X-Received: by 2002:a05:620a:6cc9:b0:92e:6485:f640 with SMTP id af79cd13be357-93bf577a07cmr801547885a.4.1789976236109; Mon, 21 Sep 2026 00:37:16 -0700 (PDT) X-Received: by 2002:a05:620a:6cc9:b0:92e:6485:f640 with SMTP id af79cd13be357-93bf577a07cmr801543985a.4.1789976235653; Mon, 21 Sep 2026 00:37:15 -0700 (PDT) Received: from [192.168.202.12] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c2a3573ce12sm262631266b.35.2026.09.21.00.37.11 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 21 Sep 2026 00:37:14 -0700 (PDT) Message-ID: Date: Mon, 21 Sep 2026 09:37:10 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 0/6] Add PCIe support for Qualcomm Nord platform To: Qiang Yu , Krishna Chaitanya Chundru Cc: Vinod Koul , Neil Armstrong , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lorenzo Pieralisi , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Manivannan Sadhasivam , Bjorn Helgaas , Bjorn Andersson , Maxime Chevallier , Philipp Zabel , shengchao.guo@oss.qualcomm.com, 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, Krzysztof Kozlowski , Manivannan Sadhasivam References: <20260921-nord-v4-0-ed05c6e09240@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTIxMDEwOCBTYWx0ZWRfX03Gt2/oPPWYz 5b5Ogg7+5O8g/2B+I/8iPCSmVajHczv2iAHlz+6Vvbfq+NiTq60eJUsrk+t2SwqqvAfpJUp5H0e ZjX2zCZwdVz57Wt6hV8av4ccDBRO8IumY5EYIyUx4UACGYAs8uJQcq6ieJlwgCtKPE7Wd57vp4I Q97AB4Qm3gID1W5T+jw40uCs323UloYLGhnXYgj0eV4TTnUNkLUrXnSRURwe3Tyb2YJlodhs0le foeGBf3+mvJ/WnyjOaoxgFrySfZcyaQI0AQkeyYLT55GLjFAKTOBaWwF/jDibF2rVL5YShfF/UQ aVOcqwVyj0ubPqmm9I/cV0FxqIU+ocbvrCwksCRJH/26p2Beedtznbq0Qojwm42OOc5eslFztAl woSxsuBNqWSiNUefH2AXb93Gz6x7x5Jne0uIAfiByeYIGLXCQmKL8phDcKbR2PHdBr38Hsqho0G bOhpa0J7hpkd/Yjnb9Q== X-Proofpoint-ORIG-GUID: 8dEuFIO-81aFwBqUrtfWHLqXExP-Rkpl X-Proofpoint-GUID: 8dEuFIO-81aFwBqUrtfWHLqXExP-Rkpl X-Authority-Analysis: v=2.4 cv=dakVTnXe c=1 sm=1 tr=0 ts=6ab0deb2 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=eQCDFL0YdFa3ysEWRUMA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwOTIxMDEwOCBTYWx0ZWRfX0QNfP8CW+jnm G+4jr7jJj0Uew631imejF70n/SzZxHOsdddu3STgaMn4aFGpYR+lgY5kVuuk/VmERJmgDkJgy1k F95jWSDXQuLgka9qJ723yrNrMBiVayI= 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=2026-09-21_03,2026-09-16_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 spamscore=0 adultscore=0 phishscore=0 bulkscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609210108 On 9/21/26 8:30 AM, Qiang Yu wrote: > On Mon, Sep 21, 2026 at 11:07:08AM +0530, Krishna Chaitanya Chundru wrote: >> This series adds PCIe support for the Qualcomm Nord (SA8797P) platform. >> >> Nord has a single Gen5-capable QMP PCIe PHY block split into four >> independently-clocked and independently-resettable ports (A/B/C/D). >> Firmware selects the active lane topology at boot via a TCSR >> configuration register, and the same PHY block can appear as a single >> x16 port, x8+x8, x8+x4+x4, or x8+x4+x2+x2 depending on that mode. This >> is similar in spirit to the Glymur multi-PHY support already posted, >> except Nord's PHY registers are programmed by Linux rather than by >> firmware, so this series adds the PLL, TXRXZ, PCS and PCS-lane init >> tables along with the power-up/power-down/soft-reset sequencing needed >> to bring each port up. >> >> The series also documents and wires up the qcom,nord-pcie compatible >> (reusing the existing SA8775P PCIe controller binding), and adds a >> CORE_CLK_CGC_DIS/AUX_PWR_DET workaround required to avoid a timing >> convergence issue in the PCIe power domain. >> >> Signed-off-by: Krishna Chaitanya Chundru > > Tested on Glymur CRD and Glymur QCB, devices can be enumerated. A test of "this didn't break my completely different board" is welcome, but looks a little confusing without you saying that was the intent specifically - unless maybe it wasn't? Konrad