From: Scott Wood <scottwood@freescale.com>
To: Laxmikant Rashinkar <lk.atwork@yahoo.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: How to access Freesale UPM NAND device
Date: Thu, 28 Aug 2008 13:57:10 -0500 [thread overview]
Message-ID: <48B6F506.9040103@freescale.com> (raw)
In-Reply-To: <765252.68184.qm@web46305.mail.sp1.yahoo.com>
Laxmikant Rashinkar wrote:
> I have a custom board running MPC8347 on Linux 2.6.27 with Uboot 1.1.4.
> I also have a NAND device (Micron MT29F2G08AACWP) connected to the LBC
> and controlled via UPM.
>
> fsl_elbc_nand.ko, fsl_upm.ko are loaded.
fsl_elbc_nand is for FCM; you only need the latter.
> I'm wondering how to access the NAND device. Do I need mDOC? TrueFFS?
JFFS2 is typically used.
> I have grep'd for the functions declared in fsl_upm.c and fsl_lbc.c and
> find that no other
> code path calls these functions. So it looks like the drivers are loaded
> but no one calls into
> them.
The init function of the module registers a driver, providing function
pointers that are called. You access the device through /dev/mtd*.
-Scott
prev parent reply other threads:[~2008-08-28 19:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-27 18:16 How to access Freesale UPM NAND device Laxmikant Rashinkar
2008-08-28 18:57 ` Scott Wood [this message]
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