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[49.97.27.89]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39ae60b48a8sm648235a91.0.2026.09.01.21.43.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Sep 2026 21:43:30 -0700 (PDT) From: Kengo Oki To: fernandorimoli11@gmail.com Cc: dan.scally@ideasonboard.com, dev@berg.pm, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, mchehab@kernel.org, naeemarsalan@gmail.com, sakari.ailus@linux.intel.com, Kengo Oki Subject: Re: [PATCH v4 6/6] media: ipu-bridge: Request non-continuous clock for ov5693 on IPU6 Date: Wed, 2 Sep 2026 13:42:38 +0900 Message-ID: <20260902044238.13648-1-dev.kengo.fugu0141@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260831181858.325109-7-fernandorimoli11@gmail.com> References: <20260831181858.325109-7-fernandorimoli11@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Fernando, I completed the Surface Go 4 A/B test for the proposed Alder Lake-N entry. Test system: * Microsoft Surface Go 4 * IPU6: 8086:462e (Alder Lake-N) * Front sensor: OV5693 * Sensor enumeration: INT33BE:00 * Kernel: Ubuntu 7.0.0-30-generic I tested the v4 semantics as a minimal backport to Ubuntu 7.0.0-30.30. Patch 2 needed a small semantic backport because Ubuntu's sensor table differs from the upstream base. Without the ADL-N INT33BE match, after a cold boot the first deliberate front-camera capture produced: ``` requested_frames=300 frame_count=0 exit_code=124 ``` with: ``` intel_ipu6_isys.isys intel_ipu6.isys.40: stream stop time out intel_ipu6_isys.isys intel_ipu6.isys.40: stream close time out ``` I then added only: ``` IPU_SENSOR_CONFIG_MATCH_FL("INT33BE", PCI_DEVICE_ID_INTEL_IPU6EP_ADLN, CSI2_CLK_NONCONTINUOUS, 1, 419200000), ``` After a full power-off and cold boot, with no earlier IPU6 stream activity in that boot, the same 300-frame test produced: ``` requested_frames=300 frame_count=300 exit_code=0 last sequence=000299 ~28.64 fps ``` There were no relevant stream/CSI timeout or error messages during the successful run. So on this Surface Go 4 the A/B result is: ``` v4 without ADL-N match: 0/300, timeout v4 with ADL-N match: 300/300, success ``` This unit enumerates the OV5693 as INT33BE:00, not OVTI5693. Full test/build evidence: https://github.com/Fugu0141/Surface-Go4-IPU6-camera-linux/blob/main/tests/2026-09-01-ov5693-v4-adln/RESULT.md For v5 with the ADL-N entry added: Tested-by: Kengo Oki # Surface Go 4, IPU6 Alder Lake-N 8086:462e