On Wednesday 03 February 2016 16:02:05 Zubair Lutfullah Kakakhel wrote:

Hence, I find the original binding simpler and easier to understand when looking at the hardware manual

+       uctl@118006c000000 {
+               compatible = "cavium,octeon-7130-sata-uctl";
+               reg = <0x11800 0x6c000000 0x0 0x100>;
+               ranges; /* Direct mapping */
+               dma-ranges;
+               #address-cells = <2>;
+               #size-cells = <2>;
+
+               sata: sata@16c0000000000 {
+                       compatible = "cavium,octeon-7130-ahci";
+                       reg = <0x16c00 0x00000000 0x0 0x200>;
+                       interrupt-parent = <&cibsata>;
+                       interrupts = <2 4>; /* Bit: 2, level */
+               };
+       };

Is it possible to let this example go in as is?

I don't have the hardware manual, so I'm just guessing what the hardware
looks like. If the manual describes the device as a bridge with a 1:1 mapping,
then your existing example above absolutely makes sense.

	Arnd