Add node for the MT8167's IOMMU.

Signed-off-by: Fabien Parent <fpar...@baylibre.com>
---
Note: This series is based on 
https://git.kernel.org/pub/scm/linux/kernel/git/matthias.bgg/linux.git/log/?h=v5.12-next/dts64-2

V3:
        * Removed unicode character in commit summary
V2:
        * Remove unneeded cell-index property

 arch/arm64/boot/dts/mediatek/mt8167.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8167.dtsi 
b/arch/arm64/boot/dts/mediatek/mt8167.dtsi
index bbddd4b22d3e..9029051624a6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8167.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8167.dtsi
@@ -170,5 +170,13 @@ larb2: larb@16010000 {
                        clock-names = "apb", "smi";
                        power-domains = <&spm MT8167_POWER_DOMAIN_VDEC>;
                };
+
+               iommu: m4u@10203000 {
+                       compatible = "mediatek,mt8167-m4u";
+                       reg = <0 0x10203000 0 0x1000>;
+                       mediatek,larbs = <&larb0 &larb1 &larb2>;
+                       interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_LOW>;
+                       #iommu-cells = <1>;
+               };
        };
 };
-- 
2.31.0

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