From: Matthieu CASTET <matthieu.castet@parrot.com>
To: Huang Shijie <b32955@freescale.com>
Cc: David Woodhouse <dwmw2@infradead.org>,
"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
Artem Bityutskiy <dedekind1@gmail.com>
Subject: Re: question: Why the nand_wait() wait for 20ms for nand program.
Date: Fri, 18 Jan 2013 13:26:13 +0100 [thread overview]
Message-ID: <50F93F65.90805@parrot.com> (raw)
In-Reply-To: <50F9023D.5040408@freescale.com>
Huang Shijie a écrit :
> Hi all:
> Why the nand_wait() wait for 20ms for nand program. could we
> expand this time to 40ms? I have a nand chip : Micron MT29F64G08CBABAWP.
> The chip's BUSY/READY pin may needs more then 20ms to become ready,
> though its
> datasheet tells me the tPROG's max value is 2.5ms.
>
Don't you have an hardware problem (missing pullup/down on ready busy pin) ?
If the datasheet say the max value is 2.5 ms , how it can be more than 20 ms.
Matthieu
next prev parent reply other threads:[~2013-01-18 12:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-18 8:05 question: Why the nand_wait() wait for 20ms for nand program Huang Shijie
2013-01-18 12:26 ` Matthieu CASTET [this message]
2013-01-21 3:34 ` Huang Shijie
2013-01-21 8:57 ` Matthieu CASTET
[not found] ` <50FD0554.8030108@freescale.com>
2013-01-21 9:15 ` Matthieu CASTET
2013-01-21 9:25 ` Huang Shijie
2013-01-21 9:32 ` Matthieu CASTET
2013-01-21 9:35 ` Huang Shijie
[not found] ` <50FF9068.1030709@freescale.com>
2013-02-01 16:58 ` question about mtd_torturetest.c Artem Bityutskiy
2013-02-04 5:19 ` Gupta, Pekon
2013-02-04 6:58 ` Artem Bityutskiy
2013-02-04 7:32 ` Huang Shijie
2013-01-22 2:46 ` question: Why the nand_wait() wait for 20ms for nand program Huang Shijie
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