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From: "Eric Bénard" <eric@eukrea.com>
To: Roberto Nibali <rnibali@gmail.com>
Cc: barebox@lists.infradead.org
Subject: Re: Booting mx25 based device from SD and NOR
Date: Fri, 25 May 2012 12:08:58 +0200	[thread overview]
Message-ID: <20120525120858.77dd6e7a@eb-e6520> (raw)
In-Reply-To: <CAONxwYNisYJ+hvHTnxjHs-oPVGDFrhajVxMMrZXFJ8GN7aTg9A@mail.gmail.com>

Hi Roberto,

Le Fri, 25 May 2012 11:04:52 +0200,
Roberto Nibali <rnibali@gmail.com> a écrit :
> > for the weim setting you may need to do something similar to what is
> > done on line 187 of :
> >
> > http://git.pengutronix.de/?p=barebox.git;a=blob;f=arch/arm/boards/eukrea_cpuimx27/eukrea_cpuimx27.c;h=63e87c9551c440edab572f5252a503ba4d533161;hb=c48de4beee21c3a5573cec084123c33ae08f6f7a
> >
> >
> Now that piece certainly was missing, but how the heck did you find out
> those register values? Where did you get the information about writing to
> chip select 0 and selecting:
> 
> CSCR0U: 0x00008F03
> CSCR0L: 0xA0330D01
> CSCR0A: 0x002208C0
> 
you need the reference manual of the i.MX25 to know the meaning of
these registers and the datasheet of your flash to know it's timings
then you can calculate the value to put in the registers.

Eric

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  reply	other threads:[~2012-05-25 10:09 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-22 12:11 Roberto Nibali
2012-05-22 18:42 ` Sascha Hauer
2012-05-23 10:43   ` Roberto Nibali
2012-05-23 11:47     ` Eric Bénard
2012-05-24 12:49       ` Roberto Nibali
2012-05-24 12:58         ` Eric Bénard
2012-05-24 13:18           ` Roberto Nibali
2012-05-24 13:31             ` Eric Bénard
2012-05-25  9:04               ` Roberto Nibali
2012-05-25 10:08                 ` Eric Bénard [this message]
2012-05-29  9:06                   ` Roberto Nibali
2012-05-29  9:29                     ` Sascha Hauer
2012-05-29  9:56                       ` Roberto Nibali
2012-05-29 10:14                         ` Roberto Nibali
2012-05-30  5:47                           ` Sascha Hauer
2012-05-30  6:39                             ` Juergen Beisert
2012-05-31 13:12                             ` Roberto Nibali
2012-05-31 17:06                               ` Sascha Hauer
2012-06-01 10:25                                 ` Roberto Nibali
2012-06-05  7:09                                   ` Sascha Hauer
2012-05-24 17:17             ` Sascha Hauer
2012-05-25  9:19               ` Roberto Nibali
2012-05-25 10:01                 ` Sascha Hauer
2012-05-29  9:26                   ` Roberto Nibali

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