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

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

[Sebastian Fleer]

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@postmarketos.org>
Signed-off-by: Sebastian Fleer <dev@dwurp.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

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

[Neil Armstrong]

On 10/29/25 13:35, Sebastian Fleer wrote:
> 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@postmarketos.org>
> Signed-off-by: Sebastian Fleer <dev@dwurp.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,

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

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

[Neil Armstrong]

Hi,

On Wed, 29 Oct 2025 13:35:28 +0100, Sebastian Fleer wrote:
> 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.
> 
> 

Thanks, Applied to https://gitlab.freedesktop.org/drm/misc/kernel.git (drm-misc-fixes)

[1/1] drm/panel: kingdisplay-kd097d04: Disable EoTp
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/d8eb00bbc628c8916ab0da2bb80059d48aa4512e

-- 
Neil