Address translation?

[ChocolateLoverRaj]

Are there plans to add funtions to get the MMIO address accessible by the CPU for a node?

For example for a Raspberry Pi Zero, the serial io is
/soc/serial@7e201000

serial@7e201000 {
	compatible = "arm,pl011-axi";
	reg = <0x7e201000 0x200>;
	interrupts = <0x02 0x19>;
	clocks = <0x08 0x13 0x08 0x14>;
	clock-names = "uartclk", "apb_pclk";
	arm,primecell-periphid = <0x241011>;
	cts-event-workaround;
	skip-init;
	status = "okay";
	phandle = <0x1b>;
};

And in /soc:

ranges = <0x7e000000 0x20000000 0x2000000>;

So the MMIO address for the serial would be 0x20000000 + 0x7e201000 - 0x7e000000. To generalize this I think for a node you have to go through all the parent nodes from the root node, adjusting the memory offset.

[repnop]

could definitely attempt to add this, though I'll have to take some time to go through the spec to make sure I get the behavior right since it's been a little while since I worked with things. thanks for the issue!