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AM68A: OSPI with NOR flash

Part Number: AM68A
Other Parts Discussed in Thread: AM68, AM69

Hi experts,

we have a custom board with an AM68A running Linux.

On the OSPI0 we attached a NOR flash (the same that is used on the AM68 evaluation board). We modified the Linux devicetree like for this evaluation board and can access the NOR flash from u-boot. Seems to work fine.

But in Linux we are unable to get the flash working. Even strange, we do not see the flash in the devicetree of the running kernel (/sys/firmware/devicetree/base). Only the OSPI0 is visible. In the devicetree blob/binary (dtb) we packed into the ITB for u-boot the flash is visible.

What makes the flash disappear from the devicetree of the running kernel?

 

With regards,

Frank