From: "Gaëtan Carlier" <gcembed@gmail.com>
To: ecos-discuss@ecos.sourceware.org
Subject: [ECOS] Problem of coldboot on i.MX27 board with Micron NAND
Date: Tue, 18 Mar 2014 14:56:00 -0000 [thread overview]
Message-ID: <53285E7A.5040102@gmail.com> (raw)
Hello,
I have a problem with redboot (release 20050912) with Freescale patches
for i.MX27 PDK (3-stack) and seems to be related to NAND chip (all other
components are identical).
When I power on the board, nothing happened on serial console but when I
press reset button (or if I reset board using JTAG, to board boot properly.
With NAND Numonyx NAND02G-B2D, it works well on power on but with Micron
MT29F2G08ABBEAH4, coldboot does not work, I have to press RESET button.
The specs seem to be similar. The only difference is a device
initialization for Micron that says that host must wait 100us after VCC
is applied before sending Reset (FFh) command.
Where have I to place the wait loop ?
At the beginning of In PLATFORM_SETUP1 macro (.macro _platform_setup1)
in hal_platform_setup.h or anywhere else ?
Test is done on boards with i.MX27 CPUs that have different revision
(200951, 201209). And I know that newer revison (starting from 2012) can
freeze at boot due to bug in PLL circuit.
Do you have any other leads for me ?
Thank you for your help.
Gaëtan Carlier.
ps : Of course, I have tried MT29 NAND on several board (that works with
NAND02G chip) but same result.
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next reply other threads:[~2014-03-18 14:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-18 14:56 Gaëtan Carlier [this message]
2014-03-19 8:48 ` Eric Bénard
2014-03-19 14:44 ` Gaëtan Carlier
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