Can MT41K256M16 be used instead MT41K128 with SAMA5D2 ?

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As MT41K128M16 is shortage, can MT41K256M16 be used instead?

Shall DDR initialization in At91BootStrap be modified?

Would you give me some advice on how to modified it if I change from MT41K128M16 to MT41K256M16?

I have modified bank offset increasing or decreasing 1 in ddr3_sdram_initialize in At91BootStrap,

but it seems not successfully.

 

Thanks a lot!