From: Ed Sutter <ed.sutter@alcatel-lucent.com>
To: meta-freescale@yoctoproject.org
Subject: Re: IMX53 Custom board, ram...
Date: Fri, 27 Mar 2015 09:06:34 -0400 [thread overview]
Message-ID: <551555DA.7040901@alcatel-lucent.com> (raw)
In-Reply-To: <1427449171.3074.5.camel@perpic.it>
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@alcatel-lucent.com
next prev parent reply other threads:[~2015-03-27 13:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-27 9:39 IMX53 Custom board, ram andrea
2015-03-27 13:06 ` Ed Sutter [this message]
2015-03-27 14:11 ` andrea
2015-03-27 14:24 ` Ed Sutter
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