From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 79525C71157 for ; Wed, 18 Jun 2025 09:59:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B6E6710E7EA; Wed, 18 Jun 2025 09:59:58 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="mSWalhnh"; dkim-atps=neutral Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3EBEA10E7DB for ; Wed, 18 Jun 2025 09:59:55 +0000 (UTC) Received: from [127.0.1.1] (91-158-153-178.elisa-laajakaista.fi [91.158.153.178]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 4AF955288; Wed, 18 Jun 2025 11:59:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1750240781; bh=B3dq0sEpe5AT9qctfQAR4vjZEu+9Or2HA//TK9hQ9OY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=mSWalhnhoqpNSAlK1Vq7C9//mECRuAb86zLq4yBYFkLdZXvhpxf2qhqSY7sbF535e rbkDDyp3KgCAhUQdyc410v62EUpsy6gX2bIJO48w4361yvdIdQ9U1FgDiRLru7UFSX xdSv/qsNfXypLd2d1RCUJ/BJtZWDXgickQuaeZ9g= From: Tomi Valkeinen Date: Wed, 18 Jun 2025 12:59:20 +0300 Subject: [PATCH v4 17/17] drm/bridge: cdns-dsi: Don't fail on MIPI_DSI_MODE_VIDEO_BURST MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20250618-cdns-dsi-impro-v4-17-862c841dbe02@ideasonboard.com> References: <20250618-cdns-dsi-impro-v4-0-862c841dbe02@ideasonboard.com> In-Reply-To: <20250618-cdns-dsi-impro-v4-0-862c841dbe02@ideasonboard.com> To: Jyri Sarha , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Vinod Koul , Kishon Vijay Abraham I , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Jayesh Choudhary , Dmitry Baryshkov Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, Francesco Dolcini , Aradhya Bhatia , Devarsh Thakkar , Parth Pancholi , Tomi Valkeinen X-Mailer: b4 0.15-dev-c25d1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1247; i=tomi.valkeinen@ideasonboard.com; h=from:subject:message-id; bh=B3dq0sEpe5AT9qctfQAR4vjZEu+9Or2HA//TK9hQ9OY=; b=owEBbQKS/ZANAwAIAfo9qoy8lh71AcsmYgBoUo4Cm9WSHu5ul0FLGjPBlHGU7cspWgy2eAURb KxUES9AIJGJAjMEAAEIAB0WIQTEOAw+ll79gQef86f6PaqMvJYe9QUCaFKOAgAKCRD6PaqMvJYe 9ewUD/9FAokWtzhtDn9Z+8u+/+5MlZcIEC2OOKxjX5GL2PbefUPOjrk+HNISEOopeVSR73XaN1W Fme0uL0cQEuJHwK6nmfXOkYMwuwgaYHUNHB9ar4382ofLFHGdA/o9kSQb3dSYbuVrTYIQKUIPGV DN//ujwi0V+Ef5eD/sBoXZySIiGSr5kOrVDr6/72SLfTcJ2hS+7eYTY0QsmS+QVQqaWUbNrghju XBLNM5OD8Dw/qpAVJ4tdjHQezx02TXw3shJfujRhJ1cz2oOHCg5A1u7rKCSvX6r4Lq25MMXifCp d+iC3/mXxHByOcmCxgxCvkOeZlUnHsvN3mQTICXdZHJuuAOPHZwL/7jFC9RalZ7PJOocA+9A7ty Err+ffK5hUcX2qMoMtl7XXJCMkIYHpPSE9OYwJ0ay5b7yoQ8fvX6Tfm5mMpYCeexJuF390o18QM Vx+U6odM5pEND4s9n03L6Qppsf6gc+sqU8HJk4PX31jHgfbpFku+rKMlEyyYDxiqSAO1DNi/ecH p2iZVT0lyB17P3JKwV3upODe7k2Gp6b42bPSduX1hoL+5N9CPjTiLBKImJkjzGax9atv8T0AAh3 RLJZIdEaPr5yTDDTu5G4pEG/5ORbeCe+NLK0M39YfmUznAuPwSgt5ensRmI8UkacIPh+FTOy41u LqWSuGztD8G3+Zw== X-Developer-Key: i=tomi.valkeinen@ideasonboard.com; a=openpgp; fpr=C4380C3E965EFD81079FF3A7FA3DAA8CBC961EF5 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" While the cdns-dsi does not support DSI burst mode, the burst mode is essentially DSI event mode with more versatile clocking and timings. Thus cdns-dsi doesn't need to fail if the DSI peripheral driver requests MIPI_DSI_MODE_VIDEO_BURST. In my particular use case, this allows the use of ti-sn65dsi83 driver. Tested-by: Parth Pancholi Tested-by: Jayesh Choudhary Signed-off-by: Tomi Valkeinen --- drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c index 114d883c65dc..09b289f0fcbf 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c @@ -1052,10 +1052,6 @@ static int cdns_dsi_attach(struct mipi_dsi_host *host, if (output->dev) return -EBUSY; - /* We do not support burst mode yet. */ - if (dev->mode_flags & MIPI_DSI_MODE_VIDEO_BURST) - return -ENOTSUPP; - /* * The host <-> device link might be described using an OF-graph * representation, in this case we extract the device of_node from -- 2.43.0