From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: [PATCH 14/14] ARM: tegra: Enable SMMU for VDE on Tegra124 Date: Mon, 13 Aug 2018 16:50:27 +0200 Message-ID: <20180813145027.16346-15-thierry.reding@gmail.com> References: <20180813145027.16346-1-thierry.reding@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180813145027.16346-1-thierry.reding@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" To: Mauro Carvalho Chehab , Thierry Reding Cc: devel@driverdev.osuosl.org, Greg Kroah-Hartman , Jonathan Hunter , linux-tegra@vger.kernel.org, Dmitry Osipenko , linux-media@vger.kernel.org List-Id: linux-tegra@vger.kernel.org From: Thierry Reding The video decode engine can use the SMMU to use buffers that are not physically contiguous in memory. This allows better memory usage for video decoding, since fragmentation may cause contiguous allocations to fail. Signed-off-by: Thierry Reding --- arch/arm/boot/dts/tegra124.dtsi | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/tegra124.dtsi b/arch/arm/boot/dts/tegra124.dtsi index 8fdca4723205..0713e0ed5fef 100644 --- a/arch/arm/boot/dts/tegra124.dtsi +++ b/arch/arm/boot/dts/tegra124.dtsi @@ -321,6 +321,8 @@ resets = <&tegra_car 61>, <&tegra_car 63>; reset-names = "vde", "bsev"; + + iommus = <&mc TEGRA_SWGROUP_VDE>; }; apbdma: dma@60020000 { -- 2.17.0