There is no IOMMU on Tegra20, instead a GART would be picked as an IOMMU
provider.
Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
Acked-by: Joerg Roedel <jroe...@suse.de>
---
drivers/gpu/drm/tegra/drm.c | 3 ++-
drivers/gpu/host1x/dev.c | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index e999391aedc9..aa7988dcc28f 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -131,7 +131,8 @@ static int tegra_drm_load(struct drm_device *drm, unsigned
long flags)
if (!tegra)
return -ENOMEM;
- if (iommu_present(&platform_bus_type)) {
+ if (iommu_present(&platform_bus_type) &&
+ !of_machine_is_compatible("nvidia,tegra20")) {
u64 carveout_start, carveout_end, gem_start, gem_end;
struct iommu_domain_geometry *geometry;
unsigned long order;
diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index f05ebb14fa63..6a805ed908c3 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -177,7 +177,8 @@ static int host1x_probe(struct platform_device *pdev)
return err;
}
- if (iommu_present(&platform_bus_type)) {
+ if (iommu_present(&platform_bus_type) &&
+ !of_machine_is_compatible("nvidia,tegra20")) {
struct iommu_domain_geometry *geometry;
unsigned long order;
--
2.13.0
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