[PATCH] arm64: tegra: Enable audio IOMMU support on Tegra194

[Thierry Reding]

From: Thierry Reding <treding at nvidia.com>

Add iommus and interconnects properties to the sound device tree node on
Tegra194. This ensures that the correct SID is used for translation of
physical to I/O virtual addresses and that the path to system memory is
properly described, which in turn can impact the range of memory that
the device can address.

Signed-off-by: Thierry Reding <treding at nvidia.com>
---
 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index a6e61d899a27..076d5efc4c3d 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -2477,6 +2477,11 @@ sound {
 		 * for 8x and 11.025x sample rate streams.
 		 */
 		assigned-clock-rates = <258000000>;
+
+		interconnects = <&mc TEGRA194_MEMORY_CLIENT_APEDMAR &emc>,
+				<&mc TEGRA194_MEMORY_CLIENT_APEDMAW &emc>;
+		interconnect-names = "dma-mem", "write";
+		iommus = <&smmu TEGRA194_SID_APE>;
 	};
 
 	tcu: tcu {
-- 
2.32.0