netdev - Re: [PATCH net-next v2] candev: allow SJW user setting for bittiming calculation

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Date:	Fri, 23 Sep 2011 09:24:20 +0200
From:	Wolfgang Grandegger <wg@...ndegger.com>
To:	Oliver Hartkopp <socketcan@...tkopp.net>
CC:	SocketCAN Core Mailing List <socketcan-core@...ts.berlios.de>,
	Linux Netdev List <netdev@...r.kernel.org>,
	Pavel Píša <pisa@....felk.cvut.cz>,
	Andrey Volkov <avolkov@...ma-el.com>
Subject: Re: [PATCH net-next v2] candev: allow SJW user setting for bittiming
 calculation

Hi Oliver,

On 09/22/2011 09:41 PM, Oliver Hartkopp wrote:
> Hi Wolfgang,
> 
> i put Pavel and Andrey into CC, maybe they also have an opinion about this.
> I just talked to a specialist who told me, that a higher SJW is better - if

Then let us set it to 4 (maximum), by default. But other documents
recommend a value of 1.

> possible. And if an expert told me so and i had a simple config interface to
> fullfill it, it would be great for me ;-)

Anyway, if SJW does not depend on other bit-timing parameters and it
usually works fine with the kernel calculated parameters I would no
longer vote against this patch.

Wolfgang,
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