Hello folks,
I've been working on trying to port an en7526 and in doing so I'm trying to learn how to at least
partially write a DTS file from an old style header full of #defines.
I ran into a bit of a quandry, I'm comparing the mt7621.dtsi file to an older
MT7621 memory map header:
https://github.com/openwrt/openwrt/blob/master/target/linux/ramips/dts/mt7621.dtsi#L100
https://github.com/keenetic/kernel-49/blob/master/arch/mips/include/asm/rt2880/rt_mmap.h#L48
```
palmbus: palmbus@1e000000 {
compatible = "palmbus";
reg = <0x1e000000 0x100000>;
ranges = <0x0 0x1e000000 0x0fffff>;
[...]
i2c: i2c@900 {
compatible = "mediatek,mt7621-i2c";
reg = <0x900 0x100>;
```
For me, means there should be an I2C controller mapped at address 0x1e000900.
But looking at rt_mmap.h I see:
```
#define RALINK_I2C_BASE 0xBE000900
```
And in fact almost everything is based on 0xBE000000, except UART and USB addresses which are
"correct". And I see these 0xBE000000 addresses being passed through KSEG1ADDR() so it seems they
are physical memory addresses, not virtual.
I was wondering if anybody has seen something like this and/or could shed some
light on it.
Thanks,
Caleb
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