From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH (repost)] Nomadik: fix reset_timer()
Date: Tue, 03 Nov 2009 14:27:12 +0100 [thread overview]
Message-ID: <20091103132712.950203F6EC@gemini.denx.de> (raw)
In-Reply-To: <20091103121250.GA8577@mail.gnudd.com>
Dear Alessandro Rubini,
In message <20091103121250.GA8577@mail.gnudd.com> you wrote:
> From: Alessandro Rubini <rubini@unipv.it>
>
> The timer decrements and READ_TIMER() negates the value read.
> Writing 0 in reset_timer() is this wrong, as a readback before 400us
> will read back 0 and will report 1780 seconds, so nand operations did
> timeout. This patch writes ~0 in reset_timer to prevent this.
>
> Signed-off-by: Alessandro Rubini <rubini@unipv.it>
> Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
> ---
>
> This must be applied for nand to work. It's a simple bugfix so
> I think it got simply forgotten.
Um... why is READ_TIMER doing such a stupid thing as negating values?
This is not what it is supposed to do - as the name says, it should
_read_ the _timer_. There is no mentioning of "NEgATE" anywhere?
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"The majority of the stupid is invincible and guaranteed for all
time. The terror of their tyranny, however, is alleviated by their
lack of consistency." - Albert Einstein
next prev parent reply other threads:[~2009-11-03 13:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-03 12:12 [U-Boot] [PATCH (repost)] Nomadik: fix reset_timer() Alessandro Rubini
2009-11-03 13:27 ` Wolfgang Denk [this message]
2009-11-03 15:23 ` Alessandro Rubini
2009-11-03 15:59 ` Wolfgang Denk
2009-11-03 16:03 ` Alessandro Rubini
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