From nobody Tue Feb 10 20:30:55 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 D559D2C0293; Tue, 28 Oct 2025 07:28:12 +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=1761636495; cv=none; b=MwdroX1MYyrfINPigqFD+xBQj40j8lVXZAXyG0BqDbcXryF4h82RyfgDSRcFGf7SSmWAeWpjoepr9jaLNGu3XaarlU/gstj5mo4UnRVzLDZLF0eHih6u9zqV3H/tmjlQvNDdSrRFEvsc97wLNynqABi+eoR/U/fSWLxMhiY503A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761636495; c=relaxed/simple; bh=Fh80gJ3lgO5wPHm6q3smMCDKrH9wSJ1/al9aJipyqDU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=GV+Ym/tgcaIaVATrMZFBH/Y3ipGv32ezx/Hn0PaSWSagzzgZ4fJ9Qo4QWq6rZ+pbf0a+IOMaBQra29GjSj3hm4vyp6aKr2JzFkhLxi/8lP/950elneXZHKi8tQqYsA5XeesxASA91dHgQ0EdGF8LD/2d1AO/xuliuKW2gSKOABc= 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=gWrCpmmW; 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="gWrCpmmW" Received: from mail.ideasonboard.com (unknown [IPv6:2401:4900:1c69:314e:ee86:ae6e:30:9d13]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 2400416CD; Tue, 28 Oct 2025 08:26:22 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1761636383; bh=Fh80gJ3lgO5wPHm6q3smMCDKrH9wSJ1/al9aJipyqDU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=gWrCpmmWXudked9fq+1WeZDgdsvABB6yBwn3AY3Uq2FdhMQo6Mqho4SjNKFiVSAH9 1L5kflxFdqfaJ4teXc0z+DQrDuEY64ufF9A2XyPmTIDXCuIfvsFH+uix+zRUGbQbPd 8Oepd9QsFtI2iXkRzneZ4RKQbLCq4GQIuZXknyoU= From: Jai Luthra Date: Tue, 28 Oct 2025 12:57:14 +0530 Subject: [PATCH 03/13] 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: <20251028-b4-rpi-ov5647-v1-3-098413454f5e@ideasonboard.com> References: <20251028-b4-rpi-ov5647-v1-0-098413454f5e@ideasonboard.com> In-Reply-To: <20251028-b4-rpi-ov5647-v1-0-098413454f5e@ideasonboard.com> To: Sakari Ailus , Dave Stevenson , Jacopo Mondi , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Mauro Carvalho Chehab , Kieran Bingham , David Plowman , Laurent Pinchart , Peter Robinson , Stefan Wahren , "Ivan T. Ivanov" , Jai Luthra X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=949; i=jai.luthra@ideasonboard.com; h=from:subject:message-id; bh=txOyxp6ia1h8UAHDRUonSqN/ZHogzMl/0zPZ6skqky0=; b=owEBbQKS/ZANAwAKAUPekfkkmnFFAcsmYgBpAHBssG5A18DKQ/N9wRq1TUQpGsr/4J3VJEnca 5r9EKpfwpuJAjMEAAEKAB0WIQRN4NgY5dV16NRar8VD3pH5JJpxRQUCaQBwbAAKCRBD3pH5JJpx RXz6EADBOnadJip4LwDCzTE5txUSlFVY2Hmdf3nyepFGvLr2wb/O16vzYST+/j8uOv9iNJ+6xHh ZZLRq10I394kiKEnhNp0YXIR4DHcFebyEWrr78u72AmI5RMp8yAL8laJ3/RdCLtkB8uVWFCmwPC NwIG8flyr+k+pg+HOX4MGsq6qx/vo7oqjGixL1RIAOBqTN2l9/z/jbmbucXrAtdek7CsmG6yWvM w+ZsHHTSP/GGO6mg35QKyGgqDjSyzpEiDihQdxLryM8gTClWiI1vtIjHYA2NnW7Xy7grN9JfhkY iHfCwvtgSSFgKabUMZcice3R3VoF5gA0+Dx57aVmK9kcynR1GDObdRWUAmgtO/ut8PpSL2yOGQq eE9uRo1O0t1loH7BLdQ8teWp6uoA791kgxSjmrXhQXKnYRL58H53r7Cnma/5yN8D+iSSSPzm5cs HqJpDjDI4IZZzbnNhR1idnnpyZZOFfhZWxYS1vt8DCOw19oEdzZyp7vKCQTSnqshmKSyN/WO38J zuuN3pMfqxv9UVOiek6alPyUxKrT39v/GB/ak48YVMIHGbz4HoB5ZKAVDIB4tMGum9xWbh7IkBc zIlI2hxtlOGtnMa1qAX/DQh6rbGPXAY+MYjclBwukz9svqjLBpRff3f4zzGwPLCslSqIm1Y61fN przmWS7uG5CMTQQ== 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 Signed-off-by: Jai Luthra Reviewed-by: Jacopo Mondi --- 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 4fed655f5a11c38e76d1ccc9ae9155cf945684ab..dfe36116e6d3936aa0568f172c7= 9ad4dad21f8c2 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 2.51.0