[PATCH 2/3] iommu: tegra/gart: Add device tree support
DORMANTno replies
From: Thierry Reding <hidden>
Date: 2012-04-13 13:08:08
Also in:
linux-iommu, linux-tegra
Subsystem:
iommu subsystem, open firmware and flattened device tree bindings, tegra iommu drivers, the rest · Maintainers:
Joerg Roedel, Will Deacon, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Thierry Reding, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2012-04-13 · Re: [PATCH 2/3] iommu: tegra/gart: Add device tree support · Stephen Warren <hidden>
This commit adds device tree support for the GART hardware available on NVIDIA Tegra 20 SoCs. Signed-off-by: Thierry Reding <redacted> --- .../devicetree/bindings/iommu/nvidia,tegra20-gart.txt | 14 ++++++++++++++ drivers/iommu/tegra-gart.c | 11 +++++++++++ 2 files changed, 25 insertions(+) create mode 100644 Documentation/devicetree/bindings/iommu/nvidia,tegra20-gart.txt
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 0000000..2d87b91
--- /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 f6bc1e6..40533bb 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-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>"); +MODULE_ALIAS("platform:tegra-gart"); MODULE_LICENSE("GPL v2");
--
1.7.10