2 files changed, 7 insertions, 6 deletions

diff --git a/Documentation/devicetree/bindings/iommu/nvidia,tegra20-gart.txt b/Documentation/devicetree/bindings/iommu/nvidia,tegra20-gart.txt
index 2d87b9191fc..099d9362ebc 100644
--- a/Documentation/devicetree/bindings/iommu/nvidia,tegra20-gart.txt
+++ b/Documentation/devicetree/bindings/iommu/nvidia,tegra20-gart.txt
@@ -7,8 +7,8 @@ Required properties:
 
 Example:
 
-        gart: gart@7000f000 {
+        gart {
                 compatible = "nvidia,tegra20-gart";
-                reg = < 0x7000f000 0x00000100    /* controller registers */
-                        0x58000000 0x02000000 >; /* GART aperture */
+                reg = <0x7000f024 0x00000018    /* controller registers */
+                       0x58000000 0x02000000>;  /* GART aperture */
         };
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index 40533bba625..0c0a3779221 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -36,9 +36,10 @@
 /* bitmap of the page sizes currently supported */
 #define GART_IOMMU_PGSIZES      (SZ_4K)
 
-#define GART_CONFIG             0x24
-#define GART_ENTRY_ADDR         0x28
-#define GART_ENTRY_DATA         0x2c
+#define GART_REG_BASE           0x24
+#define GART_CONFIG             (0x24 - GART_REG_BASE)
+#define GART_ENTRY_ADDR         (0x28 - GART_REG_BASE)
+#define GART_ENTRY_DATA         (0x2c - GART_REG_BASE)
 #define GART_ENTRY_PHYS_ADDR_VALID      (1 << 31)
 
 #define GART_PAGE_SHIFT         12