arm64: dts: apple: Add identity dma-ranges mapping

Without this, the OF core ends up limiting all DMA masks to the default
32-bit, since that runs before drivers set up the proper DMA mask.

Skipping the highest page because it is impossible to express a full
64-bit range in the DT.

Signed-off-by: Hector Martin <marcan@marcan.st>

Author: marcan

arch/arm64/boot/dts/apple/t6001.dtsi

@@ -50,6 +50,8 @@
 
 		ranges;
 		nonposted-mmio;
+		/* Required to get >32-bit DMA via DARTs */
+		dma-ranges = <0 0 0 0 0xffffffff 0xffffc000>;
 
 		// filled via templated includes at the end of the file
 	};

arch/arm64/boot/dts/apple/t6002.dtsi

@@ -240,6 +240,8 @@
 			 <0x5 0x80000000 0x5 0x80000000 0x1 0x80000000>,
 			 <0x7 0x0 0x7 0x0 0xf 0x80000000>;
 		nonposted-mmio;
+		/* Required to get >32-bit DMA via DARTs */
+		dma-ranges = <0 0 0 0 0xffffffff 0xffffc000>;
 
 		// filled via templated includes at the end of the file
 	};
@@ -251,6 +253,8 @@
 		ranges = <0x2 0x0 0x22 0x0 0x4 0x0>,
 			 <0x7 0x0 0x27 0x0 0xf 0x80000000>;
 		nonposted-mmio;
+		/* Required to get >32-bit DMA via DARTs */
+		dma-ranges = <0 0 0 0 0xffffffff 0xffffc000>;
 
 		// filled via templated includes at the end of the file
 	};

arch/arm64/boot/dts/apple/t6021.dtsi

@@ -50,6 +50,8 @@
 
 		ranges;
 		nonposted-mmio;
+		/* Required to get >32-bit DMA via DARTs */
+		dma-ranges = <0 0 0 0 0xffffffff 0xffffc000>;
 
 		// filled via templated includes at the end of the file
 	};

arch/arm64/boot/dts/apple/t8103.dtsi

@@ -436,6 +436,8 @@
 
 		ranges;
 		nonposted-mmio;
+		/* Required to get >32-bit DMA via DARTs */
+		dma-ranges = <0 0 0 0 0xffffffff 0xffffc000>;
 
 		gpu: gpu@206400000 {
 			compatible = "apple,agx-t8103", "apple,agx-g13g";

arch/arm64/boot/dts/apple/t8112.dtsi

@@ -468,6 +468,8 @@
 
 		ranges;
 		nonposted-mmio;
+		/* Required to get >32-bit DMA via DARTs */
+		dma-ranges = <0 0 0 0 0xffffffff 0xffffc000>;
 
 		gpu: gpu@206400000 {
 			compatible = "apple,agx-t8112", "apple,agx-g14g";