CONFIG_NR_DRAM_BANKS=8?

IHGG — Thu, 11 Feb 2021 02:01:26 GMT

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#M35916

Any help would be greatly appreciated

Thanks.

Re: CONFIG_NR_DRAM_BANKS=8?

Yuri — Thu, 11 Feb 2021 04:28:54 GMT

@IHGG
Hello,

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

Regards,
Yuri.

Re: CONFIG_NR_DRAM_BANKS=8?

IHGG — Fri, 12 Feb 2021 02:30:16 GMT

Thank you for the quick response.

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

Thanks a lot

i.MX ProcessorsのトピックRe: CONFIG_NR_DRAM_BANKS=8?

CONFIG_NR_DRAM_BANKS=8?

Re: CONFIG_NR_DRAM_BANKS=8?

Re: CONFIG_NR_DRAM_BANKS=8?