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-rw-r--r--Documentation/devicetree/bindings/iommu/nvidia,tegra20-gart.txt14
-rw-r--r--drivers/iommu/tegra-gart.c11
2 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iommu/nvidia,tegra20-gart.txt b/Documentation/devicetree/bindings/iommu/nvidia,tegra20-gart.txt
new file mode 100644
index 000000000000..2d87b9191fce
--- /dev/null
+++ b/Documentation/devicetree/bindings/iommu/nvidia,tegra20-gart.txt
@@ -0,0 +1,14 @@
+NVIDIA Tegra 20 GART
+
+Required properties:
+- compatible: "nvidia,tegra20-gart"
+- reg: Two pairs of cells specifying the physical address and size of
+ the memory controller registers and the GART aperture respectively.
+
+Example:
+
+ gart: gart@7000f000 {
+ compatible = "nvidia,tegra20-gart";
+ reg = < 0x7000f000 0x00000100 /* controller registers */
+ 0x58000000 0x02000000 >; /* GART aperture */
+ };
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index f6bc1e67e1a3..40533bba6254 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -29,6 +29,7 @@
#include <linux/device.h>
#include <linux/io.h>
#include <linux/iommu.h>
+#include <linux/of.h>
#include <asm/cacheflush.h>
@@ -422,6 +423,14 @@ const struct dev_pm_ops tegra_gart_pm_ops = {
.resume = tegra_gart_resume,
};
+#ifdef CONFIG_OF
+static struct of_device_id tegra_gart_of_match[] __devinitdata = {
+ { .compatible = "nvidia,tegra20-gart", },
+ { },
+};
+MODULE_DEVICE_TABLE(of, tegra_gart_of_match);
+#endif
+
static struct platform_driver tegra_gart_driver = {
.probe = tegra_gart_probe,
.remove = tegra_gart_remove,
@@ -429,6 +438,7 @@ static struct platform_driver tegra_gart_driver = {
.owner = THIS_MODULE,
.name = "tegra-gart",
.pm = &tegra_gart_pm_ops,
+ .of_match_table = of_match_ptr(tegra_gart_of_match),
},
};
@@ -448,4 +458,5 @@ module_exit(tegra_gart_exit);
MODULE_DESCRIPTION("IOMMU API for GART in Tegra20");
MODULE_AUTHOR("Hiroshi DOYU <hdoyu@nvidia.com>");
+MODULE_ALIAS("platform:tegra-gart");
MODULE_LICENSE("GPL v2");
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