diff --git a/plat/nvidia/tegra/include/t194/tegra_def.h b/plat/nvidia/tegra/include/t194/tegra_def.h
index 7bdd975fca94967eba2550f06e1ea98e30e2e834..6d198392aa86fbfb79204dbe6ef0a48e7f8c6342 100644
--- a/plat/nvidia/tegra/include/t194/tegra_def.h
+++ b/plat/nvidia/tegra/include/t194/tegra_def.h
@@ -190,6 +190,7 @@
  * Tegra micro-seconds timer constants
  ******************************************************************************/
 #define TEGRA_TMRUS_BASE		0x0C2E0000
+#define TEGRA_TMRUS_SIZE		0x10000
 
 /*******************************************************************************
  * Tegra Power Mgmt Controller constants