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Fri, 31 May 2024 14:52:13 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 44VEqC1q017847 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 31 May 2024 14:52:12 GMT Received: from [10.216.8.21] (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Fri, 31 May 2024 07:52:06 -0700 Message-ID: <68621b7a-0079-49ad-adf0-71d1fe24bcf0@quicinc.com> Date: Fri, 31 May 2024 20:22:02 +0530 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 0/2] Disable SS instances in park mode for SC7180/ SC7280 To: Konrad Dybcio , Doug Anderson CC: , Krzysztof Kozlowski , Rob Herring , Bjorn Andersson , Conor Dooley , Stephen Boyd , Greg Kroah-Hartman , Matthias Kaehlcke , , , , , References: <20240530082556.2960148-1-quic_kriskura@quicinc.com> <33db558f-2863-4246-a06a-d94ae2efc0a1@linaro.org> Content-Language: en-US From: Krishna Kurapati PSSNV In-Reply-To: <33db558f-2863-4246-a06a-d94ae2efc0a1@linaro.org> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 1kEPteRDxgoOvPuEcZz1qwzckogaa9tO X-Proofpoint-ORIG-GUID: 1kEPteRDxgoOvPuEcZz1qwzckogaa9tO X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.650,FMLib:17.12.28.16 definitions=2024-05-31_10,2024-05-30_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 lowpriorityscore=0 impostorscore=0 clxscore=1015 mlxscore=0 mlxlogscore=874 malwarescore=0 spamscore=0 adultscore=0 bulkscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2405310110 On 5/31/2024 8:11 PM, Konrad Dybcio wrote: > On 31.05.2024 4:31 PM, Doug Anderson wrote: >> Hi, >> >> On Fri, May 31, 2024 at 7:27 AM Krishna Kurapati PSSNV >> wrote: >>> >>>> My only guess is that somehow SC8280XP is faster and that changes the >>>> timing of how it handles interrupts. I guess you could try capping >>>> your cpufreq in sysfs and see if that makes a difference in >>>> reproducing. ;-) ...or maybe somehow SC8280XP has a newer version of >>>> the IP where they've fixed this? >>>> >>>> It would be interesting if someone with a SDM845 dragonboard could try >>>> replicating since that seems highly likely to reproduce, at least. >>>> >>> >>> Hi Konrad, Doug, >>> >>> Usually on downstream we set this quirk only for all Gen-1 targets >>> (not particularly for this testcase) but to avoid these kind of >>> controller going dead issues. I can filter out the gen-1 targets (other >>> than sc7280/sc7180) and send a separate series to add this quirk in all >>> of them. >> >> Sounds like a plan to me! > > Yep! > > In case there are more gen1 platforms than what we have upstream, it would > be of great utility if you could list them all, so that we can have a reference > for future additions, Krishna. > I am not sure if I can give out info on targets that are not on upstream. I will check internally if I can do that. Else we can just ensure that from now on whenever a Gen-1 target is getting upstreamed, this quirk is set. Regards, Krishna,