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[8/9] arm64: tegra: Hook up memory controller to SMMU on Tegra186

Message ID 20210325130332.778208-9-thierry.reding@gmail.com (mailing list archive)
State New, archived
Headers show
Series arm64: tegra: Prevent early SMMU faults | expand

Commit Message

Thierry Reding March 25, 2021, 1:03 p.m. UTC 
From: Thierry Reding <treding@nvidia.com>

On Tegra186 and later, the memory controller needs to be programmed in
coordination with any of the ARM SMMU instances to configure the stream
ID used for each memory client.

To support this, add a phandle reference to the memory controller to the
SMMU device tree node.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 arch/arm64/boot/dts/nvidia/tegra186.dtsi | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
index 9f75bbf00cf7..e9fdf9e18d37 100644
--- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi
@@ -1152,6 +1152,8 @@  smmu: iommu@12000000 {
 		stream-match-mask = <0x7f80>;
 		#global-interrupts = <1>;
 		#iommu-cells = <1>;
+
+		nvidia,memory-controller = <&mc>;
 	};
 
 	host1x@13e00000 {