linux-kernel - [RFC 06/10] ARM: tegra: tegra124: Enable IOMMU for display controllers

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Date:	Thu, 26 Jun 2014 22:49:46 +0200
From:	Thierry Reding <thierry.reding@...il.com>
To:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Arnd Bergmann <arnd@...db.de>,
	Will Deacon <will.deacon@....com>,
	Joerg Roedel <joro@...tes.org>
Cc:	Cho KyongHo <pullip.cho@...sung.com>,
	Grant Grundler <grundler@...omium.org>,
	Dave Martin <Dave.Martin@....com>,
	Marc Zyngier <marc.zyngier@....com>,
	Hiroshi Doyu <hdoyu@...dia.com>,
	Olav Haugan <ohaugan@...eaurora.org>,
	Paul Walmsley <pwalmsley@...dia.com>,
	Rhyland Klein <rklein@...dia.com>,
	Allen Martin <amartin@...dia.com>, devicetree@...r.kernel.org,
	iommu@...ts.linux-foundation.org,
	linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [RFC 06/10] ARM: tegra: tegra124: Enable IOMMU for display controllers

From: Thierry Reding <treding@...dia.com>

Add an iommus property to each of the display controllers and encode the
SWGROUP in the specifier.

Signed-off-by: Thierry Reding <treding@...dia.com>
---
 arch/arm/boot/dts/tegra124.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi
index efa0f0c519be..82751d2878c4 100644
--- a/arch/arm/boot/dts/tegra124.dtsi
+++ b/arch/arm/boot/dts/tegra124.dtsi
@@ -3,6 +3,7 @@
 #include <dt-bindings/pinctrl/pinctrl-tegra.h>
 #include <dt-bindings/pinctrl/pinctrl-tegra-xusb.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/memory/tegra124-mc.h>
 
 #include "skeleton.dtsi"
 
@@ -104,6 +105,8 @@
 			reset-names = "dc";
 
 			nvidia,head = <0>;
+
+			iommus = <&mc TEGRA_SWGROUP_DC>;
 		};
 
 		dc@0,54240000 {
@@ -117,6 +120,8 @@
 			reset-names = "dc";
 
 			nvidia,head = <1>;
+
+			iommus = <&mc TEGRA_SWGROUP_DCB>;
 		};
 
 		hdmi@0,54280000 {
-- 
2.0.0

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