From nobody Tue Feb 10 00:00:15 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 6D80022AE7E for ; Thu, 20 Mar 2025 16:01:08 +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=1742486469; cv=none; b=Uz/17Wkka4D8lQlC8ZINRPciFCIMSgtrv8sz4AvyoGWNN7RU+YMvfemKznrek74w9amcNjUXmM9mfSEUVLNL6GdsBEBYY8SpANyrrYzJa6+iEhTfyplsgDL99B/9L3gdWGc88DBkQcJv6zmozfnf3jw8jhgONcs7V/ofY3q2d6A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742486469; c=relaxed/simple; bh=QpPNCE/E/KWQolKtCOFkofej8djB0ueW3MJ0KSDshcA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=NHaoHGovOqMtxvrH78BYipjyKvEodTcqyBAl0mvpduxRuody6Eccfg6KjF3BlvLT/A4moh+FJv9d2RTUpQ2M1HUmM+8+ZAxAURxSwMdHcl9jWqnDgoO0DHHAAOflG/HvVUtAklaMKsf0WAGGRkt4KlbZamwl6Az3i7B7W1p1gco= 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=YRc/72gg; 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="YRc/72gg" 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 DE811250A; Thu, 20 Mar 2025 16:59:06 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1742486347; bh=QpPNCE/E/KWQolKtCOFkofej8djB0ueW3MJ0KSDshcA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=YRc/72ggG0toHOpFZ/BCgslWMD3HdlJpcT6czhZK7/OSHGeAkp3gUIr2FzCpHHZhn 1umV9fgcd18nGHvHL1gB8OVkSy9NJ6o3fBjknF9s1Fed8uw4WTSQQPC8rcCBROf8lu /hkjdKkQoVzEjIdq+OsAX7LBmHK7IGlybG0xt46c= From: Tomi Valkeinen Date: Thu, 20 Mar 2025 18:00:13 +0200 Subject: [PATCH 18/18] 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: <20250320-cdns-dsi-impro-v1-18-725277c5f43b@ideasonboard.com> References: <20250320-cdns-dsi-impro-v1-0-725277c5f43b@ideasonboard.com> In-Reply-To: <20250320-cdns-dsi-impro-v1-0-725277c5f43b@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 Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, Francesco Dolcini , Aradhya Bhatia , Devarsh Thakkar , Tomi Valkeinen X-Mailer: b4 0.15-dev-c25d1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1141; i=tomi.valkeinen@ideasonboard.com; h=from:subject:message-id; bh=QpPNCE/E/KWQolKtCOFkofej8djB0ueW3MJ0KSDshcA=; b=owEBbQKS/ZANAwAIAfo9qoy8lh71AcsmYgBn3DucYZK5+NXYKzJdd92G5rg9oQKnoa7JAD37U yJIIGrHFUiJAjMEAAEIAB0WIQTEOAw+ll79gQef86f6PaqMvJYe9QUCZ9w7nAAKCRD6PaqMvJYe 9Y06D/4rAhssTack4HqjC5UtxrcEAjrkFWN5o67P5tlC9R8Vn4uRFWQcmlqGdpL6k/A71CGm0Oi +mnV5lqIDCqIP6lizBE0zTXJWB0E0BLjv+nJaxXqf8Pk0BT38AU6NZH2s5ZSOLiBjRTHn0s6Eo3 hFAY2gCT4xZfqZKT4iFLMGAmFHfIrmgs1uB3DAxbHAxv++Ms8CTg9JrdHvF+fTpl9tYX2bNUFux XueuOxfPRd62CS1T+mJrcql5kSUNGrkq8BMvc1goHn9AecIw+d3n/MpvnvRMWBBzCIXSqTutEnv PV7dnA/e0fGKKA7pxcXEi1C9egEitsAsRV3W2h9A6Vplf0vCm69NmczyMMh5Z4eP1vABp/S8DrC 0wnIgEJb3pIDca2PxG5gILF+ZCjdPMRGHKlfAfElU22XanbR8B+PLT+3sRhm2Z/JROu9NCuKpSB dZjRTrsqF4MDSKDpw6MENP2uy0wU9btREJ7EG9FkAZxvd4whD1fJeiYzEkZyTtxcy87l4OElfSF ecZU2RhxfedKZt/gGamZFYa9qT+eoimTBB0Zry9MKYyVHKltUz5QRV0+Fn9d2wFWI4bkABK08nf 2HUyQbCRWwJGfNSJDMv8pg0rQiaCPvbjVSZ6di21hyj471vp9w21oxRzhcHIVChijk88xJleK1d m9JZZ2aJEbI+ibg== 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. 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 0bb55584cb44..4b77a203b608 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c @@ -1057,10 +1057,6 @@ 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