From nobody Sat Feb 7 05:56:39 2026 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7599013B5AE; Mon, 22 Dec 2025 08:16:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.167.242.64 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766391375; cv=none; b=Qj76cr88ESoQbRbSXWJjk/wXUmzzOl91meeR6pHfSszXFRErN0HWRWtqeX/eKUAv63Yz4khm+/ctaJFhmqMavwYSwcnlb3EK5nsHz77IT0wxadnjnoqw7euFWa88OAupR9KIpGOPfhO9WlPkxfey1FPEW9eUJEUEstKCdik1hBk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766391375; c=relaxed/simple; bh=ECDfT216IS7XDAHxl6JD3dcTZsCiJMFAKz8PveO6GBQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=jAF60P/MbLEWEyH/M9el/Ng3YiAEjEz3Ja5S8s4BMxuLTy9ScTLbABQCg4CO9jhl1GJu4P/zP/fhdXk9LQsdml4EOan8WRQCHVbkavM/ojSG+3CXFO9hl86sPiMCdDRAneqIQC3Jai6C87UjkhxtFg7OC9368jQc+vJs31F6Gog= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com; spf=pass smtp.mailfrom=ideasonboard.com; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b=B+UfWrQL; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="B+UfWrQL" Received: from mail.ideasonboard.com (unknown [IPv6:2401:4900:1c66:aa51:d08b:9316:9524:9005]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id A037710BE; Mon, 22 Dec 2025 09:16:01 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1766391362; bh=ECDfT216IS7XDAHxl6JD3dcTZsCiJMFAKz8PveO6GBQ=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=B+UfWrQLzhIFarg41RJbaPIdNpEKMpyGMHhzB53fQ8KqoS0euDTDf3bIhvt/pZHs6 Rtgz/Cvw1M3ikBYegHd49frWxFrtAwMn34TJRcAOwzKA2it58CJ57KSc0bmn5elG/K ljbId2J1kPWV10Ij+Pg/ckGB9chi6OCjDh7HE4/4= From: Jai Luthra Date: Mon, 22 Dec 2025 13:45:27 +0530 Subject: [PATCH v4 03/17] media: i2c: ov5647: Correct minimum VBLANK value Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251222-b4-rpi-ov5647-v4-3-b949c7309280@ideasonboard.com> References: <20251222-b4-rpi-ov5647-v4-0-b949c7309280@ideasonboard.com> In-Reply-To: <20251222-b4-rpi-ov5647-v4-0-b949c7309280@ideasonboard.com> To: Sakari Ailus , Dave Stevenson , Jacopo Mondi , Mauro Carvalho Chehab , Naushir Patuck , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Mauro Carvalho Chehab , Kieran Bingham , David Plowman , Laurent Pinchart , Peter Robinson , Stefan Wahren , "Ivan T. Ivanov" , Jacopo Mondi , Jai Luthra X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1008; i=jai.luthra@ideasonboard.com; h=from:subject:message-id; bh=EeooS5E8RZpQuz7+4w+98i6AERrcR8y8PJ4LbLlm9Qk=; b=owEBbQKS/ZANAwAKAUPekfkkmnFFAcsmYgBpSP4jhLP7r0/yMZ7ahnqOuzVKSePWm4zMXAWRf Mlfxv2Dy5mJAjMEAAEKAB0WIQRN4NgY5dV16NRar8VD3pH5JJpxRQUCaUj+IwAKCRBD3pH5JJpx RfioEADNvweYMoOPlblqwgo/9kCmgc40MlzjOT7J/vQeN3F3VX4TkrUOU2iNvl1/YaaVHJ7ZCMb fGXie4mCBaKbAHtCEoSlSgRuhNTCC2t+3+fY4cgs33OttFaIYoFiplayV89tAQW/Tv1RTKL5Wzy ERAwVgAtJ8ZhuPfVW8ZpB9h80e1/UJLVngCHEnuGgMc9BfU4l5QByd4zV2XgECmYm02wbpGhCKk yfjnG9Y6gH8FP5jI9Cy3D0VK1f7a+hp4bHoVGJfeia0gh0D58gjo0e4zOhIfeVKMPO/zumdy8sR WsW47mEZ2spkcYfbtac7KC7nSukAxMSEXab9kcLJFHcV5wOEBwwGls5VgvKthNXGElPHQ8ozCtL crwbxQofed0yp4uQfI9fnDH/rHyLILDR9A04zQ3TdmEYM2A+81UT9lGNCf/T68lcofNoGhat7GM X6sL7HnWh6dad+CSE196wuGJbbPnoCI6IN2MpsvA2jU/twpglOt6u/d+aLBNq79YTPq0lb2YMoN 6uLkJSl2uLyGXtoV2mx4gp9R/pcdV5tTtX65i4wSad5yDAUpoT9144ByA3P8Kl/Lohjc9kcFnkz wxbJ+7WExqZalVldkJMWdPHa7/1hnmflOQhuu4Cz7tSNMWnGFFIscH3aVuStwJ3WhLpjz89sR0U QxU59rcCm8T1fDQ== X-Developer-Key: i=jai.luthra@ideasonboard.com; a=openpgp; fpr=4DE0D818E5D575E8D45AAFC543DE91F9249A7145 From: David Plowman Trial and error reveals that the minimum vblank value appears to be 24 (the OV5647 data sheet does not give any clues). This fixes streaming lock-ups in full resolution mode. Fixes: 2512c06441e3 ("media: ov5647: Support V4L2_CID_VBLANK control") Signed-off-by: David Plowman Reviewed-by: Jacopo Mondi Signed-off-by: Jai Luthra --- drivers/media/i2c/ov5647.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c index d9e300406f58e554de12d9062840353bdf7a226c..191954497e3dba4b1de4094b2ea= 1328a6e287003 100644 --- a/drivers/media/i2c/ov5647.c +++ b/drivers/media/i2c/ov5647.c @@ -73,7 +73,7 @@ #define OV5647_PIXEL_ARRAY_WIDTH 2592U #define OV5647_PIXEL_ARRAY_HEIGHT 1944U =20 -#define OV5647_VBLANK_MIN 4 +#define OV5647_VBLANK_MIN 24 #define OV5647_VTS_MAX 32767 =20 #define OV5647_EXPOSURE_MIN 4 --=20 2.52.0