diff --git a/plat/nvidia/tegra/include/t186/tegra_def.h b/plat/nvidia/tegra/include/t186/tegra_def.h
index 04a7d0b..7f618bd 100644
--- a/plat/nvidia/tegra/include/t186/tegra_def.h
+++ b/plat/nvidia/tegra/include/t186/tegra_def.h
@@ -78,9 +78,11 @@
  ******************************************************************************/
 #define TEGRA_MISC_BASE			0x00100000
 #define  HARDWARE_REVISION_OFFSET	0x4
-#define  HARDWARE_MINOR_REVISION_MASK	0xf0000
-#define  HARDWARE_MINOR_REVISION_SHIFT	0x10
-#define  HARDWARE_REVISION_A01		1
+#define  MAJOR_VERSION_SHIFT		0x4
+#define  MAJOR_VERSION_MASK		0xF
+#define  MINOR_VERSION_SHIFT		0x10
+#define  MINOR_VERSION_MASK		0xF
+
 #define  MISCREG_PFCFG			0x200C
 
 /*******************************************************************************