From: Wolfgang Grandegger <wg@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] fsl_i2c: increase I2C timeout values and make them configurable
Date: Mon, 14 Sep 2009 18:01:23 +0200 [thread overview]
Message-ID: <4AAE68D3.8010900@denx.de> (raw)
In-Reply-To: <4AAE55FA.4070702@freescale.com>
Timur Tabi wrote:
> Wolfgang Grandegger wrote:
>
>> I did not follow the thread yet, sorry. I implemented AN2819 for Linux
>> (see http://lxr.linux.no/#linux+v2.6.31/drivers/i2c/busses/i2c-mpc.c)
>> some time ago using Timur's table approach. But there is no difference
>> between the table and the algorithm to calculate the value. The table is
>> actually derived from the same algorithm.
>
> The problem with the table is that it does not allow for flexibility in choosing dfsr. When I implemented the table code, I did not think that this was a problem, but apparently it is.
What would be the criteria to choose dfsr, especially for a defined bus
frequency.
Wolfgang.
next prev parent reply other threads:[~2009-09-14 16:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-09 9:19 [U-Boot] fsl_i2c: increase I2C timeout values and make them configurable Joakim Tjernlund
2009-09-09 14:24 ` Timur Tabi
2009-09-09 14:33 ` Joakim Tjernlund
2009-09-10 8:15 ` Joakim Tjernlund
2009-09-10 13:07 ` Timur Tabi
2009-09-10 13:20 ` Joakim Tjernlund
2009-09-10 13:29 ` Timur Tabi
2009-09-10 13:58 ` Joakim Tjernlund
2009-09-10 15:22 ` Timur Tabi
2009-09-10 15:46 ` Joakim Tjernlund
2009-09-10 15:57 ` Timur Tabi
2009-09-10 14:57 ` Joakim Tjernlund
2009-09-10 15:26 ` Timur Tabi
2009-09-10 15:53 ` Joakim Tjernlund
2009-09-10 16:13 ` Timur Tabi
2009-09-10 16:30 ` Joakim Tjernlund
2009-09-10 17:13 ` Joakim Tjernlund
2009-09-11 8:44 ` Joakim Tjernlund
[not found] ` <4AAA6ACD.9040905@free <4AAE55FA.4070702@freescale.com>
2009-09-11 15:20 ` Timur Tabi
2009-09-14 13:53 ` Detlev Zundel
2009-09-14 14:18 ` Wolfgang Grandegger
2009-09-14 14:40 ` Timur Tabi
2009-09-14 15:54 ` Joakim Tjernlund
2009-09-15 11:53 ` Wolfgang Grandegger
2009-09-15 12:24 ` Joakim Tjernlund
2009-09-15 18:53 ` Joakim Tjernlund
2009-09-14 16:01 ` Wolfgang Grandegger [this message]
2009-09-14 16:18 ` Joakim Tjernlund
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