diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 5adf4b337de3..2e88a5e06884 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -421,6 +421,7 @@ static void hsw_set_power_well(struct drm_i915_private *dev_priv,
 	BIT(POWER_DOMAIN_TRANSCODER_EDP) |		\
 	BIT(POWER_DOMAIN_PIPE_A_PANEL_FITTER) |		\
 	BIT(POWER_DOMAIN_PORT_DDI_A_LANES) |		\
+	BIT(POWER_DOMAIN_PORT_DSI) |			\
 	BIT(POWER_DOMAIN_AUX_A) |			\
 	BIT(POWER_DOMAIN_PLLS) |			\
 	BIT(POWER_DOMAIN_INIT))