From patchwork Tue Feb 20 09:28:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Umang Jain X-Patchwork-Id: 99246 Received: from ny.mirrors.kernel.org ([147.75.199.223]) by linuxtv.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rcMRO-0007j4-1T for patchwork@linuxtv.org; Tue, 20 Feb 2024 09:29:31 +0000 Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 44AC01C246B1 for ; Tue, 20 Feb 2024 09:29:29 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 966AF612DB; Tue, 20 Feb 2024 09:28:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="FNHqudLS" X-Original-To: linux-media@vger.kernel.org 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 58B0D60DC4; Tue, 20 Feb 2024 09:28:33 +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=1708421315; cv=none; b=Gz4wtKurpYQQEkB9Qz9Jd+E+rZIed1LDXK8l1v+G08haYrxdMRxyOtNvr75YZFcIgHurUCigg3nUBs+yWxQb6TFf+yf+BDo/Z5qiM4Jp/q2PoemxB/A1svSUZlMbwM/CR/O5fzwbEPJtllAYZp28XWwKPTRozAD2c2psllAJXc8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708421315; c=relaxed/simple; bh=ojTTiT7sFsKLZQgcQ3xTUQAx0XjIPRDu5NRR820vWbM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Cycs/Xk0wabHxfkOW5AwMYzYMzEzDsQf1TiOG3Yr4E+00SIww9BvIi8FQn6E7QGlAUQuoVjHeU4hp9aGVLOWiINvhPv1ULgZ9GOo9aokcGNLMUknHXSRKMtlW/pm1nZs8lb7vH+jK4+/mLRUe8If6uVeupN/bNdC++RKtEnfdWQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (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=FNHqudLS; arc=none smtp.client-ip=213.167.242.64 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ideasonboard.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ideasonboard.com Received: from umang.jain (unknown [103.86.18.159]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 2E3A214AF; Tue, 20 Feb 2024 10:28:21 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1708421304; bh=ojTTiT7sFsKLZQgcQ3xTUQAx0XjIPRDu5NRR820vWbM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FNHqudLSaF49k70GYlsIMmJOhIlAVqlyMliyANY3PDGKX7BhaKdduZcOtHmydPyKb qmYLH5rfVbtl818UdnBxBZ7TltCU+fCoTZ69/hfG9ZDUA0HRmy807W73iMUSXeIwja VRkwZWIcPBMiY6mvQc/J9Gr9ue0YvXYxm6f7PUHo= From: Umang Jain To: linux-media@vger.kernel.org Cc: Kieran Bingham , Mauro Carvalho Chehab , open list , Sakari Ailus , Umang Jain , Matthias Fend Subject: [PATCH v3 1/5] media: imx335: Set reserved register to default value Date: Tue, 20 Feb 2024 14:58:17 +0530 Message-ID: <20240220092821.1993-2-umang.jain@ideasonboard.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240220092821.1993-1-umang.jain@ideasonboard.com> References: <20240220092821.1993-1-umang.jain@ideasonboard.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-LSpam-Score: -3.0 (---) X-LSpam-Report: No, score=-3.0 required=5.0 tests=ARC_SIGNED=0.001,ARC_VALID=-0.1,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,DKIM_VALID_AU=-0.1,DMARC_MISSING=0.001,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1,RCVD_IN_DNSWL_MED=-2.3,SPF_HELO_NONE=0.001,SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no 0x3a00 is a reserved register as per the datasheet. The driver currently sets to it 0x01 while the datasheet claims 0x00 to be the default value. On one of the setup based on i.MX8MP platform with IMX335, this register write broke the CSI-2 configuration. Setting 0x3a00 to its default value (i.e. 0x00) fixed the issue. It is not clear from the datasheet what this register write is responsible for but setting it to its default value seems the right thing to do, provided it has been found responsible to break CSI-2 configuration on one of the platform. Signed-off-by: Umang Jain Reported-by: Matthias Fend --- drivers/media/i2c/imx335.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/i2c/imx335.c b/drivers/media/i2c/imx335.c index 7a37eb327ff4..3d3848a58fa7 100644 --- a/drivers/media/i2c/imx335.c +++ b/drivers/media/i2c/imx335.c @@ -249,7 +249,7 @@ static const struct imx335_reg mode_2592x1940_regs[] = { {0x3794, 0x7a}, {0x3796, 0xa1}, {0x37b0, 0x36}, - {0x3a00, 0x01}, + {0x3a00, 0x00}, }; static const struct imx335_reg raw10_framefmt_regs[] = {