mtd write reference ubi partition

[ericwoud]

BPI-Router-Images/README.md

Lines 98 to 100 in e1fc3b3

	mtd write spi-nand0 $loadaddr 0x200000 $filesize
	```
	make sure size of ubi partition in devicetree matches your nand size on first linux boot to correctly resize the ubifs, else EC errors occour when booting from nand.

Could use this instead?

mtd write ubi $loadaddr 0 $filesize

Then this would work on R64/R3/R4, where all boards have a different offset.

[frank-w]

If the other boards have an ubi mtd partition in uboot. Afaik r3 has it not by default,r64 afaik has bo nand defined so it will not work with offset too

[ericwoud]

I see, indeed I have added them to my build, because distroboot uses the named partition to find ubi.