From nobody Tue Dec 2 02:57:41 2025 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 5C284354AE6; Tue, 18 Nov 2025 12:03:44 +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=1763467425; cv=none; b=ZnfTxbjxqUX6/nIGqpcp1RSJdzS6Fn57gU+totE8EwNtmvq6qIejK+eeXuI7hMwnWJXJ5koUyGGvwoSPTn10EUte0OVOxOaOJbIJodjydz/Jn3ONra6TyhOEUXEreMh70Dz8Hfhw2hxbzhYFkEh7FIVhJyNXfkzYH/TPA3fzIqc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763467425; c=relaxed/simple; bh=4o2wSEZtfhxVZELUbPZsLlNJj6/xjS1zxgpkP1Hnv/w=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=f0R53JFhV+eAIG9Zk0NxKWarONWkTR9AXehGcfurNQBJhbUH1UskGoHDAIcU7qOJCVB7DUM48vgBsUU9aKLZTtbcJoyLsrpLpoUEHds03aMOWLYzSqCGUZoiX33oE8Gm4I5YwMgbqwT7h41izpzeZ0IwF/pxAb5P27zl1FfPOi0= 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=BX9sq57b; 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="BX9sq57b" Received: from mail.ideasonboard.com (unknown [IPv6:2401:4900:1c66:4b0d:7040:4d69:4c7c:d231]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id C1EDC20F5; Tue, 18 Nov 2025 13:01:38 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1763467299; bh=4o2wSEZtfhxVZELUbPZsLlNJj6/xjS1zxgpkP1Hnv/w=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=BX9sq57b0p9OzKCQnbqdOTKeRqUGW5RkwMfjaz2BUsGZ2vnYu0xJuX6O2GCNFA3Lu vh43NNKacB741q/jrb/g+rjrLPrgCXfeE4baKAZLtMeb4pCsX64mcJcjavptL7WBEk Wsp2GnaDHh9FQ2f5osemR853zLHj4j+nRilA70c0= From: Jai Luthra Date: Tue, 18 Nov 2025 17:32:56 +0530 Subject: [PATCH v2 03/16] 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: <20251118-b4-rpi-ov5647-v2-3-5e78e7cb7f9b@ideasonboard.com> References: <20251118-b4-rpi-ov5647-v2-0-5e78e7cb7f9b@ideasonboard.com> In-Reply-To: <20251118-b4-rpi-ov5647-v2-0-5e78e7cb7f9b@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=1muuSQ4oB1srNRF7JZwbFGZgnharHekQalVk0S8hxDY=; b=owEBbQKS/ZANAwAKAUPekfkkmnFFAcsmYgBpHGB8F3t3XFPo0hnEoI2NSVeekUgI7Vy381cbo tyiEUanSB+JAjMEAAEKAB0WIQRN4NgY5dV16NRar8VD3pH5JJpxRQUCaRxgfAAKCRBD3pH5JJpx ReHKD/4lnDyomT7XosGfVPwyrHCNz8iauvzQYs4tCWeg8NrqN0w/Z2GaGggMtuNnkCvbsT4eTk2 EG82I1Xy0w8Kp+OhVxYybmatdpGGVhy2rd5r+eD5ZHs21Mo+m+onRKwfxG7PBdZGMcdaz2wg7jV jZfW7Q18D/0O3dzERLwGs8LbnYvCCWvkACQkXIDR3bAl95xQJJHoCSxtjEI/R39f35n3tC6eV61 7GvqxvUXmG/VJZeOjJH+Nc7qWB8+0X/fBSwKFxBiLm9E+1WJAQYIHw4ZlKNnnXSEyIo0hMhf+ul MAEKsVhRwsHCbjS4+FmVvp+AyPqVfkx9iGtoHoexLylGUEU9/88FZS6p3Fh7rWVKFN65dYNIW4z crYL9Cxs/99dENKWJ7c2HShLS06oC+rJZV1FU6+fVyPBmLRJC5+6gWnCAP79M8ELKjZtpFefK4/ 5FqjCeokwauLRsg/1t0+8RoOuCEaioFGaEPi9hxLsp8aNyP6eh7k8nYvz0BhNvDqWPMG08CZvvQ C3lv6tp4YertYEF7jsS58YUKAuJEIEGOQUTM7x9de8e2QOiGRgkJPcES71cTCG6CIoYN5Rabj7P raGuBJzrv/coq3ga90ZPXX0TzXsAap/xV2k4E9LR6CyObGAlyNQC+liJaOqBcjJABo5Q8B+Tjym ge2v9R+nq+qGtMg== 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 2.51.1