Mikrotik SPI-NOR flash not reading partitions

[Thibaut]

> Le 25 juin 2026 à 16:58, Mark Ter Morshuizen <mark at honingklip.co.za> a écrit :
> 
> Hi,
> 
> I'm trying to get 25.12.4 going on a Mikrotik SXT2nD r2.
> 
> The hardware is very similar to the supported SXT5nD r2 but the SPI NOR flash chips seem to be different.
> 
> Under 19.10.7 ar71xx both devices worked fine with the image for the SXT5nD r2.
> 
> The flash chip on the SXT2nD r2 is a Macronix MX25L512E which seems to be detected but not read.

That’s a 64KB chip, certainly not where the OS is stored. I haven’t looked up the specs but most likely this device uses a NAND flash for storage and NOR for routerboot config storage.

See ar9344_mikrotik_routerboard-951g-2hnd.dts for an example.

HTH,
T.