From mboxrd@z Thu Jan  1 00:00:00 1970
From: Luigi 'Comio' Mantellini <luigi.mantellini@idf-hit.com>
Date: Mon, 07 Jul 2008 18:17:45 +0200
Subject: [U-Boot-Users] [PATCH 1/1] Fix I2C for m547x/548x and
	m5445x	processors.
In-Reply-To: <20080707145937.B419C24304@gemini.denx.de>
References: <20080707145937.B419C24304@gemini.denx.de>
Message-ID: <1215447465.12657.15.camel@localhost>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

On lun, 2008-07-07 at 16:59 +0200, Wolfgang Denk wrote:
> In message <1215439715-28742-2-git-send-email-luigi.mantellini@idf-hit.com> you wrote:
....
> > +
> 
> What a nightmare of data and code. So many magic numbers, so much
> potential for errors. And for what?  Just for I2C support in U-Boot?
> 

>From your PoV  you are right. 

> Are you really sure you don't simply want to use the bit-banging
> driver?
> 

I just extended the fsl_i2c.c driver that already uses a precomputed
table to setup the fsl i2c. I haven't invented these values but just
copied from the 547x and 5445x manuals. Furthermore, the h/w i2c is more
accurate that the simple bitbanging.

my 2cents.

luigi

> Best regards,
> 
> Wolfgang Denk

-- 
     ______       Luigi Mantellini
   .'______'.     R&D - Software
  (.'      '.)    Industrie Dial Face S.p.A.
  ( :=----=: )    Via Canzo, 4
  ('.______.')    20068 Peschiera Borromeo (MI), Italy
   '.______.'     Tel.: +39 02 5167 2813
                  Fax:  +39 02 5167 2459
Ind.  Dial Face   Email: luigi.mantellini at idf-hit.com
www.idf-hit.com   GPG fingerprint: 3DD1 7B71 FBDF 6376 1B4A
                                   B003 175F E979 907E 1650