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Fri, 23 Oct 2026 01:06:29 -0700 (PDT) X-Received: by 2002:a05:620a:7313:10b0:939:8148:1e3d with SMTP id af79cd13be357-93f6f7f3e78mr296819785a.2.1792742788961; Fri, 23 Oct 2026 01:06:28 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c46a5c4d54dsm73770766b.24.2026.10.23.01.06.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 23 Oct 2026 01:06:27 -0700 (PDT) Message-ID: Date: Fri, 23 Oct 2026 10:06:25 +0200 X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/2] iommu/arm-smmu-qcom: Skip PRR setup on SM7250 GPU SMMU To: patches@brar.si, Will Deacon , Robin Murphy , "Joerg Roedel (AMD)" , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Rob Clark Cc: linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <20261023-smmu-sm7250-v2-0-8bb881ce19f5@brar.si> <20261023-smmu-sm7250-v2-2-8bb881ce19f5@brar.si> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261023-smmu-sm7250-v2-2-8bb881ce19f5@brar.si> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIzMDAzMiBTYWx0ZWRfX4rQ+m8bEjiQ/ da2klie++7OYuXd9I13juUA/f8DiRH3cEs7WiqzLsZbPK5WZBepuUlD3y/C8fuNoN1o/Sq4S6wJ fwntsZ4OMCBPlgCEqaaof8Hec/McSEFPKOyw4cKKvgPAQFgA8eWL98gG+3BwF76HUESGTo8wTAv sKpU4L8lP8PqOTJWe2iHpvqNIrefXd/3P1KF0S3QRknXPGmlhixrI6623X+shhwUUPAXJx5cayJ ebCVz1sIXiapwO1ZqaOuQY8CTqqvXBzudWgcQOF2hgdKMCT93pUdr6WsysiYWbFEzGI0IF6qAay cyo4plPuZND5gGyzTLnVF7hFwcyQ58Aj+KiETVBtifJbP/Pf8XCO4xPZhCEwiaJ0MQnzax4Txvk tRLiDA6XZ9S0UgnqxLGYQhVXbFBQp0tZFyJ1NmY4S586BFxPcCATD5zoJEo3gsZkOXrXu6B7Tow SPRd3+rro0D8BniWCxg== X-Proofpoint-ORIG-GUID: WKWX-9cjDUG-RJi4K6Q_wICHX8SugojO X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIzMDAzMiBTYWx0ZWRfXxooo3dt9lU0v t3KVwCB0xJoLj0mvSTxafgiAT2CsGzJ2jCFQcdTyQbcSwl51ojo7UephGQXQ7bUX0Kl9ow3COvg q6bRZUw/CujxbMaGh/RHae/qqV+Pg5g= X-Proofpoint-GUID: WKWX-9cjDUG-RJi4K6Q_wICHX8SugojO X-Authority-Analysis: v=2.4 cv=GLKdgeNK c=1 sm=1 tr=0 ts=6adb1586 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=EUspDBNiAAAA:8 a=U7Z_fe4AFx8LFHQn5dUA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-23_02,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 bulkscore=0 spamscore=0 lowpriorityscore=0 clxscore=1015 priorityscore=1501 suspectscore=0 malwarescore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610230032 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261023_010631_383302_EFBE4298 X-CRM114-Status: GOOD ( 11.60 ) X-Spam-Score: -2.8 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 10/23/26 9:54 AM, Ishu Brar via B4 Relay wrote: > From: Ishu Brar > > As on SM8250, the firmware on SM7250 resets the device when the Adreno > SMMU PRR registers are written. This happened as soon as the first > per-process GPU pagetable was created. Do not install the PRR > callbacks for the SM7250 GPU SMMU either. > > Tested on a OnePlus Nord (SM7250) with Vulkan. > > Signed-off-by: Ishu Brar > --- Acked-by: Konrad Dybcio Konrad