From: Fabio Estevam <[email protected]> The RFF500F-AWH-DNN datasheet requires a minimum delay of 250 ms between display signal output and backlight power-on.
Without this delay, the backlight can expose unsettled panel contents during display startup, resulting in a brief bright flash. Set the panel enable delay to the datasheet-specified minimum. Cc: [email protected] Fixes: 1b2a9ec82099 ("drm/panel: simple: Add Raystar RFF500F-AWH-DNN panel entry") Signed-off-by: Fabio Estevam <[email protected]> --- drivers/gpu/drm/panel/panel-simple.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index c95964ba25a9..70e37ff12c9e 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -4354,6 +4354,9 @@ static const struct panel_desc raystar_rff500f_awh_dnn = { .width = 108, .height = 65, }, + .delay = { + .enable = 250, + }, .bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG, .connector_type = DRM_MODE_CONNECTOR_LVDS, }; -- 2.43.0
