diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 16c8052f7eab0eab0141dc619d0ef5e92615f5fa..082549ee2d07cf9c1eff24908d21f1917d018222 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5147,6 +5147,7 @@ static enum intel_display_power_domain port_to_power_domain(enum port port)
 {
 	switch (port) {
 	case PORT_A:
+	case PORT_E:
 		return POWER_DOMAIN_PORT_DDI_A_4_LANES;
 	case PORT_B:
 		return POWER_DOMAIN_PORT_DDI_B_4_LANES;