diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8c322ff1c3e4b6b84a5b87cbbe4ddc280bb29ff2..115d7be12502b0c359b45d2e0e6ff46951f74383 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6504,6 +6504,9 @@ enum {
 
 #define _PLANE_BUF_CFG_1_B			0x7127c
 #define _PLANE_BUF_CFG_2_B			0x7137c
+#define  SKL_DDB_ENTRY_MASK			0x3FF
+#define  ICL_DDB_ENTRY_MASK			0x7FF
+#define  DDB_ENTRY_END_SHIFT			16
 #define _PLANE_BUF_CFG_1(pipe)	\
 	_PIPE(pipe, _PLANE_BUF_CFG_1_A, _PLANE_BUF_CFG_1_B)
 #define _PLANE_BUF_CFG_2(pipe)	\
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 3e72e9eb736e592ecdadec52f1b91722864e07ed..4126132eb7070e58e3163663284030e0350ea0be 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3864,10 +3864,18 @@ static unsigned int skl_cursor_allocation(int num_active)
 	return 8;
 }
 
-static void skl_ddb_entry_init_from_hw(struct skl_ddb_entry *entry, u32 reg)
+static void skl_ddb_entry_init_from_hw(struct drm_i915_private *dev_priv,
+				       struct skl_ddb_entry *entry, u32 reg)
 {
-	entry->start = reg & 0x3ff;
-	entry->end = (reg >> 16) & 0x3ff;
+	u16 mask;
+
+	if (INTEL_GEN(dev_priv) >= 11)
+		mask = ICL_DDB_ENTRY_MASK;
+	else
+		mask = SKL_DDB_ENTRY_MASK;
+	entry->start = reg & mask;
+	entry->end = (reg >> DDB_ENTRY_END_SHIFT) & mask;
+
 	if (entry->end)
 		entry->end += 1;
 }
@@ -3884,7 +3892,8 @@ skl_ddb_get_hw_plane_state(struct drm_i915_private *dev_priv,
 	/* Cursor doesn't support NV12/planar, so no extra calculation needed */
 	if (plane_id == PLANE_CURSOR) {
 		val = I915_READ(CUR_BUF_CFG(pipe));
-		skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane_id], val);
+		skl_ddb_entry_init_from_hw(dev_priv,
+					   &ddb->plane[pipe][plane_id], val);
 		return;
 	}
 
@@ -3903,10 +3912,13 @@ skl_ddb_get_hw_plane_state(struct drm_i915_private *dev_priv,
 	val2 = I915_READ(PLANE_NV12_BUF_CFG(pipe, plane_id));
 
 	if (fourcc == DRM_FORMAT_NV12) {
-		skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane_id], val2);
-		skl_ddb_entry_init_from_hw(&ddb->uv_plane[pipe][plane_id], val);
+		skl_ddb_entry_init_from_hw(dev_priv,
+					   &ddb->plane[pipe][plane_id], val2);
+		skl_ddb_entry_init_from_hw(dev_priv,
+					   &ddb->uv_plane[pipe][plane_id], val);
 	} else {
-		skl_ddb_entry_init_from_hw(&ddb->plane[pipe][plane_id], val);
+		skl_ddb_entry_init_from_hw(dev_priv,
+					   &ddb->plane[pipe][plane_id], val);
 	}
 }