diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c
index a0b6f69b916f9..44acf9cacaf70 100644
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -70,6 +70,21 @@ struct panel_delay {
 	 */
 	unsigned int hpd_absent;
 
+	/**
+	 * @powered_on_to_enable: Time between panel powered on and enable.
+	 *
+	 * The minimum time, in milliseconds, that needs to have passed
+	 * between when panel powered on and enable may begin.
+	 *
+	 * This is (T3+T4+T5+T6+T8)-min on eDP timing diagrams or after the
+	 * power supply enabled until we can turn the backlight on and see
+	 * valid data.
+	 *
+	 * This doesn't normally need to be set if timings are already met by
+	 * prepare_to_enable or enable.
+	 */
+	unsigned int powered_on_to_enable;
+
 	/**
 	 * @prepare_to_enable: Time between prepare and enable.
 	 *
@@ -216,6 +231,7 @@ struct panel_edp {
 	bool prepared;
 
 	ktime_t prepared_time;
+	ktime_t powered_on_time;
 	ktime_t unprepared_time;
 
 	const struct panel_desc *desc;
@@ -455,6 +471,8 @@ static int panel_edp_prepare_once(struct panel_edp *p)
 
 	gpiod_set_value_cansleep(p->enable_gpio, 1);
 
+	p->powered_on_time = ktime_get_boottime();
+
 	delay = p->desc->delay.hpd_reliable;
 	if (p->no_hpd)
 		delay = max(delay, p->desc->delay.hpd_absent);
@@ -579,6 +597,8 @@ static int panel_edp_enable(struct drm_panel *panel)
 
 	panel_edp_wait(p->prepared_time, p->desc->delay.prepare_to_enable);
 
+	panel_edp_wait(p->powered_on_time, p->desc->delay.powered_on_to_enable);
+
 	p->enabled = true;
 
 	return 0;