The .prepare callback contains the init sequence, so the DSI host *must* be enabled at that point. Set the prepare_prev_first flag to ensure that. Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> --- drivers/gpu/drm/panel/panel-novatek-nt36523.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/panel/panel-novatek-nt36523.c b/drivers/gpu/drm/panel/panel-novatek-nt36523.c index a189ce236328..32cae1bc9162 100644 --- a/drivers/gpu/drm/panel/panel-novatek-nt36523.c +++ b/drivers/gpu/drm/panel/panel-novatek-nt36523.c @@ -1270,6 +1270,8 @@ static int nt36523_probe(struct mipi_dsi_device *dsi) return ret; } + pinfo->panel.prepare_prev_first = true; + if (pinfo->desc->has_dcs_backlight) { pinfo->panel.backlight = nt36523_create_backlight(dsi); if (IS_ERR(pinfo->panel.backlight)) --- base-commit: 51b70ff55ed88edd19b080a524063446bcc34b62 change-id: 20240201-topic-3623_fix-9198419e5e47 Best regards, -- Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>