From nobody Thu Dec 18 19:28:51 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 D61242417D3 for ; Wed, 2 Apr 2025 13:31:46 +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=1743600708; cv=none; b=ANE/RZ/axZzUkjtFT3WYEafzX6fCXjaCdJ7ipZgbU2uSjJQmOTDJfRHgbuQYyiNeX9BazAKAgOJ+klZxz+6YNQKNoehqzmLlqEOhAjXhSvYf/67KcaTyh5KoXgNJILHEPCaz61I1Shwpia/wuLj61xnE8gZb+wVtsKyY6saimbE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743600708; c=relaxed/simple; bh=QpPNCE/E/KWQolKtCOFkofej8djB0ueW3MJ0KSDshcA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=N9usYtsv3JhehPYScXSoFJnEGBKWWE2FR62G2D0rG39mxxdoxP6f43yNcEfvwMJS0t2pUPjacBTmEd3728nFJOTh77eRGpNd1yxV/C1eq393GecWfXgCJ5eFDGrJZSyfNUgBNSuXkOqIBwqbezYRiOHgSmfTn3AmwW0Qan4s1ck= 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=fc/RSj74; 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="fc/RSj74" 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 B86A51990; Wed, 2 Apr 2025 15:29:42 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1743600583; bh=QpPNCE/E/KWQolKtCOFkofej8djB0ueW3MJ0KSDshcA=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=fc/RSj74kn2Z3On0haOJO3gvM7cC5TQZ0nxONkvQACRv5I4s04Pa4FdtVks8ZZShg w1KfwoWjAjSWz1WOkE1wzHfhSbuvtrmNrdICdrHW4sg6Mp7kK1JSR9Fm9OWCEZrxJF ezYHtgZ4QK7wLpjxjoP932DiMQ7Ks4yhkbfkzwLg= From: Tomi Valkeinen Date: Wed, 02 Apr 2025 16:31:00 +0300 Subject: [PATCH v2 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: <20250402-cdns-dsi-impro-v2-18-4a093eaa5e27@ideasonboard.com> References: <20250402-cdns-dsi-impro-v2-0-4a093eaa5e27@ideasonboard.com> In-Reply-To: <20250402-cdns-dsi-impro-v2-0-4a093eaa5e27@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/ZANAwAIAfo9qoy8lh71AcsmYgBn7Twh5vAfBQ7KP6xDJ0AYdDCj4qpAPSm4xNsLM sdkiIAenmuJAjMEAAEIAB0WIQTEOAw+ll79gQef86f6PaqMvJYe9QUCZ+08IQAKCRD6PaqMvJYe 9e0wD/4hTNNGZmT2+7Ef56h6RsvSyeVqQ+ZHg1Afvpmc5Agd9Ul2FJExtTibZ7yjgpO0xllrw2s xmTLn7BTXFcXGpmFBM9LIyDBLIz72HGGy1emB5sufTZUtHeqhivMgNMGpESREKbfQ+CBmUyOWkZ LaGocgPaO+VQAMW3LCbUEJFVOXt977Xv49fwvVHwmD4Rnx2TzOXAjgPtDbfBtZnDSHgqAsQ5E4s zdiwL+NmawGYTkIBUWnOgobGyDZbpJ2IHhZx4pPc5a/udzbpOIPvjFk9lRvpgBs3FOLo4yJcEkm 14QE+44dS9dwQbZgYnAqgvK/cCyRb3YnhusF9e4YZ5Etds0IgbPutzVyIWZwdxtqHPfCFXUOCgp MbxbJpgRF24qM3P08HviR680vB6bezdW05fMdESs8IKqXOziq7tcOzu6WMawyZx3tkQzGjz43q+ BXWQ6oZdc+Y244AphNtyB4HJSkHSnXd9L9it7o+an+Xnsfw/ZfXC2zycU6UjqDBYPEcBnlbngLM VBlhoNhtCijeUibdL2g1Fx+6W21YO5ZsdjTqjz6gRwxY6MLG3aWsvvS1jfDo75CYMQ1YKLZLltS ZLjBLR8SJvrZA4m0bakJz3UQ4P71JElxhrJSadd5tL3XEs/FWKcYVRNFZesYjhIbEVS+Snr0Oxd 04a9Tf/+FQoLsfw== 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