linux-kernel - [PATCH v2] drm/panel: kingdisplay-kd097d04: Disable EoTp

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Message-ID: <20251029124007.232333-1-dev@dwurp.de>
Date: Wed, 29 Oct 2025 13:35:28 +0100
From: Sebastian Fleer <dev@...rp.de>
To: dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Cc: Christoph Fritz <chf.fritz@...glemail.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Jessica Zhang <jesszhan0024@...il.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Jens Reidel <adrian@...tmarketos.org>
Subject: [PATCH v2] drm/panel: kingdisplay-kd097d04: Disable EoTp

Since commit d97e71e44937 ("drm/bridge: synopsys: dw-mipi-dsi: enable EoTp by
default") panel output on an Acer Chromebook Tab 10 (google-dru) is corrupted.
The tablet I use is equipped with a kingdisplay-kd097d04 panel, disabling EoTp
restores the correct functionality.

Fixes: 2a994cbed6b2 ("drm/panel: Add Kingdisplay KD097D04 panel driver")
Suggested-by: Jens Reidel <adrian@...tmarketos.org>
Signed-off-by: Sebastian Fleer <dev@...rp.de>
---

Changes in v2:
- Reference correct commit in Fixes tag
- Added Suggested-by

---
 drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c b/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c
index 2fc7b0779b37..893af9b16756 100644
--- a/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c
+++ b/drivers/gpu/drm/panel/panel-kingdisplay-kd097d04.c
@@ -359,7 +359,7 @@ static int kingdisplay_panel_probe(struct mipi_dsi_device *dsi)
 	dsi->lanes = 4;
 	dsi->format = MIPI_DSI_FMT_RGB888;
 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
-			  MIPI_DSI_MODE_LPM;
+			  MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET;
 
 	kingdisplay = devm_drm_panel_alloc(&dsi->dev, __typeof(*kingdisplay), base,
 					   &kingdisplay_panel_funcs,
-- 
2.51.2