From nobody Mon Oct 6 10:01:56 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 647DE28C2B1 for ; Wed, 23 Jul 2025 10:06:01 +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=1753265162; cv=none; b=qBpt/1tpGFF3IIg4DBn5dkzJK6O9KGa0MZb7yHxpJ7L6d9RCYkFFhVVp4c/9EOXx7NtymuMOnsHqO9YRbvWMEg1G233E6XJg6zzfmf+QFcryFSTBNXOfQ+p8TjOMQtn92Rln8J3t/9YM4TLkWR6VaXL5Qn//bK6eQvpOELuzYjI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753265162; c=relaxed/simple; bh=usdH24NFgjCtHwDY/tSf4Hpg487eePqFpjGZq9SVFBc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=s3ilYmwvFLDTg62BvZ/egqR3jkP6Octg+D+M8qvQFDLX3gKCPHg1/ne8E/sjhTdfFT5ZqOU6olovBVIEw+uiOXTX/SJdjqiVr72YBrTOKZV4225JfkIxVt8RgM0ubdhmuR2eLNBoxRqzGx1/JAqF+SJz7RhlauYRwfEeSacodFY= 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=BBgY89Dn; 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="BBgY89Dn" 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 D6C0510D8; Wed, 23 Jul 2025 12:05:16 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1753265118; bh=usdH24NFgjCtHwDY/tSf4Hpg487eePqFpjGZq9SVFBc=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=BBgY89DnZUDJVl8h4UBK7Q25PEM/ZRy9OccWzEdHCJUyHbDg2L5XCplfrmYK1yYf6 0TUISaqZEJxrgRihqpICYZa+UIVRlkSW6xn13UJlkpaYOZ+8mZfyOVLB3YDFCkJfDK Obd/saerjjyjgzPwT9CZoFSHJuuWAdytCG9jldsI= From: Tomi Valkeinen Date: Wed, 23 Jul 2025 13:05:21 +0300 Subject: [PATCH v5 15/15] 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: quoted-printable Message-Id: <20250723-cdns-dsi-impro-v5-15-e61cc06074c2@ideasonboard.com> References: <20250723-cdns-dsi-impro-v5-0-e61cc06074c2@ideasonboard.com> In-Reply-To: <20250723-cdns-dsi-impro-v5-0-e61cc06074c2@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=1295; i=tomi.valkeinen@ideasonboard.com; h=from:subject:message-id; bh=usdH24NFgjCtHwDY/tSf4Hpg487eePqFpjGZq9SVFBc=; b=kA0DAAgB+j2qjLyWHvUByyZiAGiAs+6gb7tGkSYWDCfmRK9uQeLWaEaI2gv+uhaNpuFlMIrzX 4kCMwQAAQgAHRYhBMQ4DD6WXv2BB5/zp/o9qoy8lh71BQJogLPuAAoJEPo9qoy8lh71yM4P/1vv FGeCXKo0Oa6m0RMXINa+6+MJy10b9pxBf6pdQTlRh6vx4OlKsz1Yu3nIGz95G4MD7kAVrkQhjNe 1QSyCZyMvQ5dxWumi98V1Hp9C2EpIV759FSUJ6Y9/F0BfB4GYfIjqDdzY6buGvC0+CdTh6SplKD AE+jPot8YV8AYIKFy3HEjXbrUvy+7S1lnutgbZPDgHhXNcHoP6GISNBCxa2jeCAXvKnAw+u7doc gfSwPhyJB85h5YF6VAkBabFD6k/HLWgQuBCs3YC0yGhXRyenD0E95cleemdoYZLFu2DKa1fpryk AapUvbzEgtV+fGzZtanzHPvPgaihSGs0LEerm3kcdt5FFGi7ybENv30q3PfNurdUqZ+s9bCTS7e E+IFZ3ifRpuBQcirmQWm0DiCPp08czCHU6VArhbw4Hlp/GH9KPT3zSOIF/YI560rOv9N310uY2L HDdpuPFhqX5RvmTQZlR2Z8v0B/vg7M5WD6p6kqIT56+5HaWxXcMw9MxzI5KAZtVLLHaHCDVyzo0 sQOrxoUGxn+ldXRZMw4ovPo+GlcLDY0lLTKvFgUNR+7gjND+2pEvVVbeyrQi1YlQHMhnjc28SCn AoNo8fNclWeHZS6fzFxApgdXL59aNOhxd/f7W6bRBr3MHFmP9OZyR01s6mfvcb4ipoHjYrw9h2O t2P8V 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 Reviewed-by: Devarsh Thakkar 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/d= rm/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 *hos= t, if (output->dev) return -EBUSY; =20 - /* 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 --=20 2.43.0