From mboxrd@z Thu Jan 1 00:00:00 1970 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 9F0F42E9EB4 for ; Wed, 18 Jun 2025 10:00:05 +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=1750240807; cv=none; b=VBcnU2qK035aFAEaTM4qfCAw/236NaMfzhVD74NrXSImEkJIa+nQJcD0SMmVjc7GQcGm7PB8MlH1Dwge6PxLKCruWiWnFAjavwVy868E7WJxjIj+Cnbhgo5uQdSC1XA0qGyvXfelphG6ZYEJbx/CQaqnlQ/fdbqxc7Bbyy0enOk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750240807; c=relaxed/simple; bh=B3dq0sEpe5AT9qctfQAR4vjZEu+9Or2HA//TK9hQ9OY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=iGDo1Tr4CPk/g4NMYChIVqMK9UlO7m+n2s/+el2JtBZkq24ko2QYRoPA1m5+hPDM5ULl33WonE7ASTFWmDJ2Uv3TPx8FDjKIloa9tcIT+o3HbmSr4EHID/se02PPKi0L6+EV2t45+f9dJpcbXAp0olQ4K89FzzsrFb2A6n1cL/Q= 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=mSWalhnh; 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="mSWalhnh" 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 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: 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 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