Hi Adrien,

Thanks for the quick fix.

On Wed, 5 May 2021 at 00:02, Adrien Grassein adrien.grassein@gmail.com wrote:

LONTIUM_LT8912B uses "drm_display_mode_to_videomode" from DRM framework that needs VIDEOMODE_HELPERS to be enabled.

Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Reported-by: Michal Suchánek msuchanek@suse.de Signed-off-by: Adrien Grassein adrien.grassein@gmail.com

---

drivers/gpu/drm/bridge/Kconfig | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 400193e38d29..70bcceaae9bf 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -68,6 +68,7 @@ config DRM_LONTIUM_LT8912B select DRM_KMS_HELPER select DRM_MIPI_DSI select REGMAP_I2C

•   select VIDEOMODE_HELPERS
    help
      Driver for Lontium LT8912B DSI to HDMI bridge
      chip driver.
  
  

Reviewed-by: Robert Foss robert.foss@linaro.org

On Wed, May 05, 2021 at 12:02:07AM +0200, Adrien Grassein wrote:

LONTIUM_LT8912B uses "drm_display_mode_to_videomode" from DRM framework that needs VIDEOMODE_HELPERS to be enabled.

Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge") Reported-by: Michal Suchánek msuchanek@suse.de Signed-off-by: Adrien Grassein adrien.grassein@gmail.com

---

drivers/gpu/drm/bridge/Kconfig | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 400193e38d29..70bcceaae9bf 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -68,6 +68,7 @@ config DRM_LONTIUM_LT8912B select DRM_KMS_HELPER select DRM_MIPI_DSI select REGMAP_I2C

• select VIDEOMODE_HELPERS help Driver for Lontium LT8912B DSI to HDMI bridge chip driver.

Indeed, this fixes the problem.

Thanks

Michal