[PATCH] arm64: tegra: Enable audio IOMMU support on Tegra194
Thierry Reding
thierry.reding at gmail.com
Fri Jul 9 05:11:27 PDT 2021
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
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