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ARM: tegra: Enable IOMMU for display controllers on Tegra124 

Add iommus properties to the device tree nodes for the two display
controllers found on Tegra124. This will allow the display controllers
to map physically non-contiguous buffers to I/O virtual contiguous
address spaces so that they can be used for scan-out.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2014-06-26 21:22:46 +02:00
parent 32215e7160
commit 5b605d4426
1 changed files with 5 additions and 0 deletions
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5
arch/arm/boot/dts/tegra124.dtsi
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@ -1,5 +1,6 @@
#include <dt-bindings/clock/tegra124-car.h>
#include <dt-bindings/gpio/tegra-gpio.h>
#include <dt-bindings/memory/tegra124-mc.h>
#include <dt-bindings/pinctrl/pinctrl-tegra.h>
#include <dt-bindings/pinctrl/pinctrl-tegra-xusb.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
@ -102,6 +103,8 @@ dc@0,54200000 {
resets = <&tegra_car 27>;
reset-names = "dc";
iommus = <&mc TEGRA_SWGROUP_DC>;
nvidia,head = <0>;
};
@ -115,6 +118,8 @@ dc@0,54240000 {
resets = <&tegra_car 26>;
reset-names = "dc";
iommus = <&mc TEGRA_SWGROUP_DCB>;
nvidia,head = <1>;
};