diff --git a/drivers/video/pxafb.h b/drivers/video/pxafb.h
index e0f90f4..ae3cbc1 100644
--- a/drivers/video/pxafb.h
+++ b/drivers/video/pxafb.h
@@ -145,4 +145,10 @@
 #define MIN_XRES	64
 #define MIN_YRES	64
 
+/* maximum X and Y resolutions - note these are limits from the register
+ * bits length instead of the real ones
+ */
+#define MAX_XRES	1024
+#define MAX_YRES	1024
+
 #endif /* __PXAFB_H__ */