linux-kernel - [PATCH v2 2/5] dt-bindings: gk20a: Document iommus property

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Message-ID: <1458010724-10945-3-git-send-email-acourbot@nvidia.com>
Date:	Tue, 15 Mar 2016 11:58:41 +0900
From:	Alexandre Courbot <acourbot@...dia.com>
To:	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>
CC:	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org,
	gnurou@...il.com, Alexandre Courbot <acourbot@...dia.com>
Subject: [PATCH v2 2/5] dt-bindings: gk20a: Document iommus property

GK20A can optionally make use of an IOMMU.

Signed-off-by: Alexandre Courbot <acourbot@...dia.com>
---
 Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt b/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt
index 914f0ff4020e..1e3748337319 100644
--- a/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt
+++ b/Documentation/devicetree/bindings/gpu/nvidia,gk20a.txt
@@ -24,6 +24,9 @@ Required properties:
 - reset-names: Must include the following entries:
   - gpu
 
+Optional properties:
+- iommus: A reference to the IOMMU. See ../iommu/iommu.txt for details.
+
 Example:
 
 	gpu@0,57000000 {
@@ -39,5 +42,6 @@ Example:
 		clock-names = "gpu", "pwr";
 		resets = <&tegra_car 184>;
 		reset-names = "gpu";
+		iommus = <&mc TEGRA_SWGROUP_GPU>;
 		status = "disabled";
 	};
-- 
2.7.2