diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 45d92a6163e9df60c84a664f028d1f17f54f6a80..3d647eed7d9f31de53f9e8f09b01dd7f13b6ee82 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1568,16 +1568,30 @@ enum {
 	TGL_REVID_D0,
 };
 
-extern const struct i915_rev_steppings tgl_uy_revids[];
-extern const struct i915_rev_steppings tgl_revids[];
+#define TGL_UY_REVIDS_SIZE	4
+#define TGL_REVIDS_SIZE		2
+
+extern const struct i915_rev_steppings tgl_uy_revids[TGL_UY_REVIDS_SIZE];
+extern const struct i915_rev_steppings tgl_revids[TGL_REVIDS_SIZE];
 
 static inline const struct i915_rev_steppings *
 tgl_revids_get(struct drm_i915_private *dev_priv)
 {
-	if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv))
-		return &tgl_uy_revids[INTEL_REVID(dev_priv)];
-	else
-		return &tgl_revids[INTEL_REVID(dev_priv)];
+	u8 revid = INTEL_REVID(dev_priv);
+	u8 size;
+	const struct i915_rev_steppings *tgl_revid_tbl;
+
+	if (IS_TGL_U(dev_priv) || IS_TGL_Y(dev_priv)) {
+		tgl_revid_tbl = tgl_uy_revids;
+		size = ARRAY_SIZE(tgl_uy_revids);
+	} else {
+		tgl_revid_tbl = tgl_revids;
+		size = ARRAY_SIZE(tgl_revids);
+	}
+
+	revid = min_t(u8, revid, size - 1);
+
+	return &tgl_revid_tbl[revid];
 }
 
 #define IS_TGL_DISP_REVID(p, since, until) \
@@ -1587,14 +1601,14 @@ tgl_revids_get(struct drm_i915_private *dev_priv)
 
 #define IS_TGL_UY_GT_REVID(p, since, until) \
 	((IS_TGL_U(p) || IS_TGL_Y(p)) && \
-	 tgl_uy_revids[INTEL_REVID(p)].gt_stepping >= (since) && \
-	 tgl_uy_revids[INTEL_REVID(p)].gt_stepping <= (until))
+	 tgl_revids_get(p)->gt_stepping >= (since) && \
+	 tgl_revids_get(p)->gt_stepping <= (until))
 
 #define IS_TGL_GT_REVID(p, since, until) \
 	(IS_TIGERLAKE(p) && \
 	 !(IS_TGL_U(p) || IS_TGL_Y(p)) && \
-	 tgl_revids[INTEL_REVID(p)].gt_stepping >= (since) && \
-	 tgl_revids[INTEL_REVID(p)].gt_stepping <= (until))
+	 tgl_revids_get(p)->gt_stepping >= (since) && \
+	 tgl_revids_get(p)->gt_stepping <= (until))
 
 #define RKL_REVID_A0		0x0
 #define RKL_REVID_B0		0x1