[PATCH v2 5/5] arm64: dts: broadcom: bcm2712: Add GPU IOMMU and IOMMU cache nodes

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 <[email protected]>
---
 arch/arm64/boot/dts/broadcom/bcm2712.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
index 761c59d90ffc..2e0dcf8ccd4c 100644
--- a/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
+++ b/arch/arm64/boot/dts/broadcom/bcm2712.dtsi
@@ -626,6 +626,19 @@ pcie2: pcie@1000120000 {
 			status = "disabled";
 		};
 
+		iommu4: iommu@1000005200 {
+			/* 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>;
+		};
+
+		iommuc: iommuc@1000005b00 {
+			compatible = "brcm,bcm2712-iommuc";
+			reg = <0x10 0x5b00 0x0 0x80>;
+		};
+
 		mip0: msi-controller@1000130000 {
 			compatible = "brcm,bcm2712-mip";
 			reg = <0x10 0x00130000 0x00 0xc0>,
@@ -667,6 +680,7 @@ v3d: gpu@1002000000 {
 
 	vc4: gpu {
 		compatible = "brcm,bcm2712-vc6";
+		iommus = <&iommu4>;
 	};
 
 	timer {

-- 
2.55.0