CONFIG_NR_DRAM_BANKS=8?

[IHGG]

Hi there. After using an evaluation kit with the i.MX8QXP, the U-Boot defconfig file contained CONFIG_NR_DRAM_BANKS=3. (Number of DRAM banks)

I am wondering why it is 3 in this case. The DRAM chip used was MT53B768M32D4DT-062.

Now I am working with a custom board using a MT41K256M16TW-107 IT:P DDR3L SDRAM chip and there is a lot more information available about it. I suspect that the number of DRAM banks should set to be 8 (according to the datasheet), but am not 100% sure.

There is a very similar question already out there by @soujanyak

https://community.nxp.com/t5/i-MX-Processors/Enabling-4-Gb-in-uboot-build-for-i-MX6Q/m-p/292704#M359...

Any help would be greatly appreciated

Thanks.

[Yuri · Accepted solution]

@IHGG 
Hello,

  here CONFIG_NR_DRAM_BANKS is number of bits: 2 ** 3 = 8 

Regards,
Yuri.

[IHGG]

Thank you for the quick response.

This makes sense now, and it all lines up with my application purposes.

Thanks a lot