From mboxrd@z Thu Jan 1 00:00:00 1970 From: thierry.reding@gmail.com (Thierry Reding) Date: Mon, 13 Oct 2014 12:33:52 +0200 Subject: [PATCH 10/12] ARM: tegra: Enable IOMMU for display controllers on Tegra30 In-Reply-To: <1413196434-5292-1-git-send-email-thierry.reding@gmail.com> References: <1413196434-5292-1-git-send-email-thierry.reding@gmail.com> Message-ID: <1413196434-5292-10-git-send-email-thierry.reding@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Thierry Reding Add iommus properties to the device tree nodes for the two display controllers found on Tegra30. 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 --- arch/arm/boot/dts/tegra30.dtsi | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi index fa7e5b642434..976eb9ba8659 100644 --- a/arch/arm/boot/dts/tegra30.dtsi +++ b/arch/arm/boot/dts/tegra30.dtsi @@ -1,5 +1,6 @@ #include #include +#include #include #include @@ -174,6 +175,8 @@ resets = <&tegra_car 27>; reset-names = "dc"; + iommus = <&mc TEGRA_SWGROUP_DC>; + nvidia,head = <0>; rgb { @@ -191,6 +194,8 @@ resets = <&tegra_car 26>; reset-names = "dc"; + iommus = <&mc TEGRA_SWGROUP_DCB>; + nvidia,head = <1>; rgb { -- 2.1.2