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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-66bf3e16f80sm1743697a12.25.2026.03.31.01.23.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 31 Mar 2026 01:23:19 -0700 (PDT) Message-ID: Date: Tue, 31 Mar 2026 10:23:16 +0200 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 v2 02/17] drm/msm/a8xx: Fix the ticks used in submit traces To: Akhil P Oommen Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Rob Clark , Sean Paul , Konrad Dybcio , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Marijn Suijten , David Airlie , Simona Vetter , Antonino Maniscalco , Connor Abbott , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann References: <20260327-a8xx-gpu-batch2-v2-0-2b53c38d2101@oss.qualcomm.com> <20260327-a8xx-gpu-batch2-v2-2-2b53c38d2101@oss.qualcomm.com> <438fd5f0-8a03-4d86-bc5a-6fd32c7a6480@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: AW1haW4tMjYwMzMxMDA3OSBTYWx0ZWRfX3MVI8GfSPIo1 yF1+zpiWef161h66VwlJMvjnXmMegaYtioMRDtJEKUp27Odb92Hf8FXurbpTWAK1CXdGXl1NdD2 9igq0nQ/vJxjIucRusam0+lQUda+UP4FegFZXWVRTy7TDDGNSmNm9vf1ZYQ75Ld3uukbJObFUzX zSYZuZAzph0jKhGv9plApWAbJGBnHnBdO4rULZK4O+gTW/sixB8MHYe5FQ9RLElIeuqDlEvyBwU HzU7msuu8ltTo8/EMIlArpuBTCvgAetr5VlWwLCTWdYEtzgN8PVdaw7gcRUzGvsVtl/6bQsDqKR DPf9IpxAUayml9BqOlrqHNkD11tgN3yrq+mPJRiQPjcQCRu+pSYuk0e0EZ1STNd8xLBFnZXFa5t G/ySunIvyMYNCoDD6hOF3ATYDRnWkOVTaeN5m/4NdNrHYjjWXK6tI47ZTYxOmV8rnedH/RoXHog mTK0PFR2n9lxanM8yUQ== X-Authority-Analysis: v=2.4 cv=AZS83nXG c=1 sm=1 tr=0 ts=69cb8479 cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=S_9RJizizuE5VhlQKy8A:9 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-GUID: 7EcXinmvNWr9wmKk0kHnbZGOSnFO_AAj X-Proofpoint-ORIG-GUID: 7EcXinmvNWr9wmKk0kHnbZGOSnFO_AAj X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-31_02,2026-03-28_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 phishscore=0 priorityscore=1501 clxscore=1015 impostorscore=0 suspectscore=0 bulkscore=0 adultscore=0 malwarescore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603310079 On 3/30/26 10:58 PM, Akhil P Oommen wrote: > On 3/27/2026 5:07 PM, Konrad Dybcio wrote: >> On 3/27/26 1:13 AM, Akhil P Oommen wrote: >>> GMU_ALWAYS_ON_COUNTER_* registers got moved in A8x, but currently, A6x >>> register offsets are used in the submit traces instead of A8x offsets. >>> To fix this, refactor a bit and use adreno_gpu->funcs->get_timestamp() >>> everywhere. >>> >>> While we are at it, update a8xx_gmu_get_timestamp() to use the GMU AO >>> counter. >> >> Which I assume does not need the GMU to be in any particular state, just >> have its clocks enabled? > > On A750+, there is a cx timer calibration during gmu resume to match the > GPU AO counters with the CPU counter. That should be complete before we > read this. Worth a comment! Konrad