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[v7,10/12] ARM: tegra: Enable IOMMU for display controllers on Tegra114

Message ID 1415871157-21968-11-git-send-email-thierry.reding@gmail.com
State Accepted, archived
Headers show

Commit Message

Thierry Reding Nov. 13, 2014, 9:32 a.m. UTC 
From: Thierry Reding <treding@nvidia.com>

Add iommus properties to the device tree nodes for the two display
controllers found on Tegra114. 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>
---
 arch/arm/boot/dts/tegra114.dtsi | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi
index e22eeca0979a..4296b5398bf5 100644
--- a/arch/arm/boot/dts/tegra114.dtsi
+++ b/arch/arm/boot/dts/tegra114.dtsi
@@ -1,5 +1,6 @@ 
 #include <dt-bindings/clock/tegra114-car.h>
 #include <dt-bindings/gpio/tegra-gpio.h>
+#include <dt-bindings/memory/tegra114-mc.h>
 #include <dt-bindings/pinctrl/pinctrl-tegra.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 
@@ -50,6 +51,8 @@ 
 			resets = <&tegra_car 27>;
 			reset-names = "dc";
 
+			iommus = <&mc TEGRA_SWGROUP_DC>;
+
 			nvidia,head = <0>;
 
 			rgb {
@@ -67,6 +70,8 @@ 
 			resets = <&tegra_car 26>;
 			reset-names = "dc";
 
+			iommus = <&mc TEGRA_SWGROUP_DCB>;
+
 			nvidia,head = <1>;
 
 			rgb {