From: Anatolij Gustschin <agust@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] NAND on mpc8360erdk
Date: Wed, 22 Apr 2009 20:17:55 +0200 [thread overview]
Message-ID: <49EF5F53.20302@denx.de> (raw)
In-Reply-To: <49EF5847.1000802@ge.com>
Hi,
Renaud barbier wrote:
> I am in the middle of NAND debugging on a MPC8544 based system.
>
> In the following code for the mpc8360erdk, why is there
> the instruction "out_8(upm->io_addr, 0x0);" in the for loop.
it is a dummy write transaction step of the UPM RAM array
programming algorithm to hit the relevant chip select.
Take a look at section '10.4.4.2 Programming the UPMs' of the
MPC8360E Reference Manual, the steps to write the UPM RAM
array are described there.
> Is that board specific?
No.
Anatolij
next prev parent reply other threads:[~2009-04-22 18:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-22 17:47 [U-Boot] NAND on mpc8360erdk Renaud barbier
2009-04-22 18:17 ` Anatolij Gustschin [this message]
2009-04-23 8:54 ` Wolfgang Grandegger
2009-04-23 22:08 ` Renaud barbier
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