netdev - About bittiming calculation result

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Message-ID: <5009516791F146C49C73FAC57C437313@hacdom.okisemi.com>
Date:	Mon, 7 Feb 2011 20:38:29 +0900
From:	"Tomoya MORINAGA" <tomoya-linux@....okisemi.com>
To:	<wg@...ndegger.com>, <socketcan-core@...ts.berlios.de>
Cc:	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: About bittiming calculation result

Hi,

I have a question for bittiming-value calculated by Can-core.

In case setting like below,
 - ip link set can0 type can bitrate 800000
 - clock=50MHz
 - Use pch_can

Can-core calculates like below
brp=21
seg1=1
seg2=1
sjw=1
prop_seg=0

Is "prop_seg=0" true ?
seg1/seg2/sjw/prop_seg must be more than 1 ?

Also I can see the following kernel error log.
bitrate error 0.7%

Thanks,
-----------------------------------------
Tomoya MORINAGA
OKI SEMICONDUCTOR CO., LTD.

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