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[v2,2/2] arm64: tegra: Enable audio IOMMU support on Tegra194

Message ID 20210708103432.1690385-3-thierry.reding@gmail.com
State New
Headers show
Series arm64: tegra: Enable audio IOMMU support on Tegra194 | expand

Commit Message

Thierry Reding July 8, 2021, 10:34 a.m. UTC 
From: Thierry Reding <treding@nvidia.com>

Add iommus and interconnects properties to the ADMAIF 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@nvidia.com>
---
 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index b7d532841390..07e61f084123 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -200,6 +200,10 @@  tegra_admaif: admaif@290f000 {
 						    "rx19", "tx19",
 						    "rx20", "tx20";
 					status = "disabled";
+					interconnects = <&mc TEGRA194_MEMORY_CLIENT_APEDMAR &emc>,
+							<&mc TEGRA194_MEMORY_CLIENT_APEDMAW &emc>;
+					interconnect-names = "dma-mem", "write";
+					iommus = <&smmu TEGRA194_SID_APE>;
 				};
 
 				tegra_i2s1: i2s@2901000 {