[PATCH 6/6] arm64: dts: broadcom: bcm2712: Add GPU IOMMU and IOMMU cache nodes

[Daniel Drake]

Define the IOMMU and IOMMUC nodes for the Broadcom BCM2712 SoC found in
the Raspberry Pi 5. Enable use of the IOMMU for the graphics/display
block.

Signed-off-by: Daniel Drake <dan@xxxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/broadcom/bcm2712.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
index 761c59d90ffc..ed3178db8acb 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
+++ b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
@@ -626,6 +626,20 @@ pcie2: pcie@1000120000 {
 			status = "disabled";
 		};
 
+		iommu4: iommu@5200 {
+			/* IOMMU for VC4 (HVS & MPL/TXP), Unicam, PISP-FE, MiniBVN */
+			compatible = "brcm,bcm2712-iommu";
+			reg = <0x10 0x5200 0x0 0x80>;
+			#iommu-cells = <0>;
+			brcm,iommu-cache = <&iommuc>;
+			brcm,iova-window = /bits/ 64 <0xa00000000 0x100000000>;
+		};
+
+		iommuc: iommuc@5b00 {
+			compatible = "brcm,bcm2712-iommuc";
+			reg = <0x10 0x5b00 0x0 0x80>;
+		};
+
 		mip0: msi-controller@1000130000 {
 			compatible = "brcm,bcm2712-mip";
 			reg = <0x10 0x00130000 0x00 0xc0>,
@@ -667,6 +681,7 @@ v3d: gpu@1002000000 {
 
 	vc4: gpu {
 		compatible = "brcm,bcm2712-vc6";
+		iommus = <&iommu4>;
 	};
 
 	timer {

-- 
2.55.0