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Tue, 20 Aug 2024 18:21:06 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA04.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 47KIL5Cn013030 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 20 Aug 2024 18:21:05 GMT Received: from [10.71.111.18] (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Tue, 20 Aug 2024 11:21:05 -0700 Message-ID: <81ec34a6-8627-4a59-8fc7-87eee4625b2d@quicinc.com> Date: Tue, 20 Aug 2024 11:21:04 -0700 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 1/3] dt-bindings: soc: qcom: eud: Update compatible strings for eud To: Trilok Soni , Konrad Dybcio , Konrad Dybcio , "Krzysztof Kozlowski" , Souradeep Chowdhury , Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , "Satya Durga Srinivasu Prabhala" , Elson Serrao CC: , , , , References: <20240807183205.803847-1-quic_molvera@quicinc.com> <20240807183205.803847-2-quic_molvera@quicinc.com> <46d0627d-877b-41f3-83f6-4c33b562f460@quicinc.com> <0ebb1ca3-722d-422f-9f71-fcc61c3470b0@kernel.org> <2b118a49-2229-4346-ab21-0aa5377d7a4e@kernel.org> <8bb412f8-4fe1-40ca-8414-bb77c66899ae@quicinc.com> <0eca6755-a2ec-404f-b98c-ee6c9f6fb55f@gmail.com> Content-Language: en-US From: Melody Olvera In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: J7FDUnbjyhTQ3gsd0FrCRLVXLp_2FX3s X-Proofpoint-ORIG-GUID: J7FDUnbjyhTQ3gsd0FrCRLVXLp_2FX3s X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-20_14,2024-08-19_03,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 phishscore=0 spamscore=0 clxscore=1011 bulkscore=0 lowpriorityscore=0 malwarescore=0 mlxlogscore=563 adultscore=0 mlxscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408200137 On 8/14/2024 3:09 PM, Trilok Soni wrote: > On 8/14/2024 1:25 PM, Konrad Dybcio wrote: >>> Unfortunately, no. We considered several options, but none guarantee that we will avoid >>> a crash if we try non-securely. The secure call also won't give a specific error if it fails either >>> (for security reasons) so we can't know if a secure access failed because it's supposed to be >>> accessed non-securely or for another reason; hence this approach. If there's >>> another way to achieve this functionality that might be better, I'm all ears. >> Can we read some fuse values and decide based on that? > In most of the cases, these fuse values are not allowed to be read > from the Linux, so that will be another problem. Melody can check > if there is any fuse values around here and possible to read them > through Linux. > I double-checked, but there really isn't any kind of fuse or anything we can read to determine how we need to access these registers. I remembered checking before authoring these patches, but I wanted to just make sure before responding here. Thanks, Melody