DT: bcm2712: Increase IOMMU2 (ISP-BE, HEVC) IOVA aperture to 4GBytes

This is largely to test a previous change that made IOMMU aperture
configurable and allocated lazily; it may be useful in its own right.
We expect IOMMU2 to be well-utilized e.g. when using 64MPix cameras.

Signed-off-by: Nick Hollinghurst <[email protected]>

Author: njhollinghurst

arch/arm64/boot/dts/broadcom/bcm2712-ds.dtsi

@@ -285,6 +285,7 @@
 		compatible = "brcm,bcm2712-iommu";
 		reg = <0x10 0x5100  0x0 0x80>;
 		cache = <&iommuc>;
+		aperture-size = <0x1 0x00000000>; // Increase IOVA aperture size to 4GBytes
 		#iommu-cells = <0>;
 	};
 
@@ -492,3 +493,7 @@
 		/* 14GiB, 64-bit, prefetchable at PCIe 04_00000000 */
 		<0x43000000 0x04 0x00000000 0x18 0x00000000 0x03 0x80000000>;
 };
+
+&pcie2 {
+	brcm,vdm-qos-map = /bits/ 8 <8 8 8 9 10 10 11 11>;
+};