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[83.173.201.248]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4587abc2798sm102590355e9.7.2025.07.28.08.01.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Jul 2025 08:01:54 -0700 (PDT) From: max.oss.09@gmail.com To: Max Krummenacher Cc: Adrien Grassein , Andrzej Hajda , David Airlie , Jernej Skrabec , Jonas Karlman , Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Neil Armstrong , Robert Foss , Simona Vetter , Thomas Zimmermann , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH] drm/bridge: lontium-lt8912b: Do not generate HFP Date: Mon, 28 Jul 2025 17:00:50 +0200 Message-ID: <20250728150059.2642055-1-max.oss.09@gmail.com> X-Mailer: git-send-email 2.42.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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" From: Max Krummenacher The datasheet of lontium-lt8912b doesn't require blanking during the HFP period. Thus use LP during HFP. Tested with a samsung-dsim (i.MX8 MM) and a tc358768 DPI to DSI bridge as the DSI host. Signed-off-by: Max Krummenacher --- drivers/gpu/drm/bridge/lontium-lt8912b.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c index 3e49d855b364..760d89493276 100644 --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c @@ -494,6 +494,7 @@ static int lt8912_attach_dsi(struct lt8912 *lt) dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM | + MIPI_DSI_MODE_VIDEO_NO_HFP | MIPI_DSI_MODE_NO_EOT_PACKET; ret = devm_mipi_dsi_attach(dev, dsi); -- 2.42.0