From: christoph glaeser <christoph.glaeser@truetzschler.de>
To: linux-mtd@lists.infradead.org
Subject: JFFS2 problem on ST M29W640DB (90 ns)
Date: Thu, 21 Oct 2004 09:32:20 +0200 [thread overview]
Message-ID: <41776604.4010101@truetzschler.de> (raw)
Hello,
the problem is the Flash ST-M29W640DB itself:
"The Read/Reset command must be issued to return the device to the
previous mode (the Read Array mode or Autoselected mode). A second
Read/Reset command would be needed if the device is to be put in the
Read Array mode from Autoselected mode."
To solve this problem, change the funktion "cfi_cmdset_0002()" in File
"cfi_cmdset_0002.c":
...
cfi_send_gen_cmd(0xf0, 0x55, base, map, cfi, cfi->device_type, NULL);
/***********************************************************************************************/
/* Fixed 20.10.2004 (C.Gl.)
*/
/*
*/
/* Probleem: Flash ST
M29W640DB */
/* If the Chip is in "Read CFI Query Command"-Mode, the first
"Read/Reset"-Command will turn */
/* the Flash back to previous mode (=Autoselet-Mode); a second
"Read/Reset"-command would be */
/* needed if the device is to be put in the "Read Array"-mode from
Autoselected mode! */
/*
*/
cfi_send_gen_cmd(0xf0, 0x55, base, map, cfi, cfi->device_type, NULL);
/***********************************************************************************************/
return cfi_amdstd_setup(map);
}
Good Luck,
Christoph Glaeser
next reply other threads:[~2004-10-21 7:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-21 7:32 christoph glaeser [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-09-19 2:05 JFFS2 problem on ST M29W640DB (90 ns) yan yong
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