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[78.80.42.240]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a18c198134sm118773235e9.15.2026.10.10.02.15.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 10 Oct 2026 02:15:26 -0700 (PDT) From: Eduard Kulyk To: j@metarealtyinc.ca Cc: Ramshouriesh R , Sakari Ailus , Mauro Carvalho Chehab , Hans de Goede , Hans Verkuil , Bryan O'Donoghue , Vladimir Zapolskiy , Bingbu Cao , Greg Kroah-Hartman , linux-media@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] media: i2c: hm1092: Add ACPI enumeration and the 19.2 MHz configuration Date: Sat, 10 Oct 2026 11:15:24 +0200 Message-ID: <20261010091524.1390879-1-kulikeduard89@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: References: 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 Jake, Tested v6 plus this patch on a Dell Latitude 7350 (Meteor Lake, IPU6), kernel 7.2.3, with an out-of-tree ipu-bridge that has the HIMX1092 entry. Patch 2 is not needed there, IPU6 already has Y10. The sensor binds as hm1092 i2c-HIMX1092:00 and streams Y10 648x368 (1344 bytes per line) through IPU6 CSI2 4 at link frequency 180480000. - v4l2-compliance 1.32.0 on the subdev: 46 tests, 0 failures, 0 warnings - 300 frames at 30.11 fps, 20 start/stop cycles without errors - runtime PM: suspended when idle, active while streaming - streams again after s2idle suspend/resume - exposure and analogue gain behave as expected (analogue gain 0/32/64/128/255 gives mean levels 16/31/45/73/113) - IR flood LED (INT3472) off/on/off at exposure 700: mean levels 9/117/9, clean IR image with the LED on - the crop rectangle reads (0,0)/1294x734 against bounds (8,8)/1280x720, as you described One issue, which I think comes from v6 rather than this patch: digital_gain is advertised as 256..4095, but only the low 10 bits seem to take effect. At exposure 100: 256 -> 15 1024 -> 8 (black frame) 512 -> 22 1280 -> 15 768 -> 29 2048 -> 8 (black frame) 1023 -> 36 4095 -> 35 So 1024 behaves like 0 and 1280 like 256. Perhaps the maximum should be 0x3ff, but I don't have the datasheet to confirm. Thanks a lot for your work on this. If you need anything else tested on this machine, feel free to contact me. Tested-by: Eduard Kulyk # Dell Latitude 7350 (IPU6) Regards, Eduard