[meta-freescale] IMX53 Custom board, ram...

[Ed Sutter]

Andrea,
A while back the first spin of our iMX6 based board had a bug that 
messed up the upper
16 bits or our 32-bit DRAM interface.  I was able to temporarily run 
this as a single bank
in 16 bit mode.  This was not with yocto however.  I would have to dig a 
bit to recall what I
had to change (I don't think it was the file you're pointing to); let me 
know if you
need that.
Ed
> Hello everybody,
>
> I would like to know what is the minimum requirement of ram that I need
> to put on the board.
> I saw for example that I can use MT41K128M16JT-125 XIT  from Micron.
> it looks like it is a 16 bit ram.
> I know that for a project the ram usage is really low. It is a 16bit
> ddr3. I didn't understand if I can use only 1 ram bank or if I need to
> use (at least 2). On IMX53qsb there's 4 banks but reading:
> http://git.freescale.com/git/cgit.cgi/imx/uboot-imx.git/tree/include/configs/mx53_loco.h?h=imx_v2009.08
> it looks like that I can define CONFIG_NR_DRAM_BANKS to 1. 1 bank of
> 32bit? or I can use 1 bank of 16bit?
>
> Thank you for the reading
> Andrea


-- 
Ed Sutter
Alcatel-Lucent Technologies -- Bell Laboratories
Phone: 908-582-2351
Email: ed.sutter at alcatel-lucent.com