Hi Oliver,

-----Original Message-----
From: Oliver Hartkopp [mailto:socketcan@hartkopp.net]
Sent: 2017年2月20日 15:57
To: Wenyou Yang - A41535 <redacted>;
mkl@pengutronix.de; wg@grandegger.com
Cc: linux-can@vger.kernel.org; linux-arm-kernel@lists.infradead.org
Subject: Re: iproute2 not function on CAN FD

On 02/20/2017 02:12 AM, Wenyou.Yang@microchip.com wrote:

quoted

I am testing the CAN FD of M_CAN on the SAMA5D2 Xplained board, when
using the ip tool from iprounte2 suite to set the CAN interface, it
doesn't work with the message "RTNETLINK answers: Operation not supported".
--->8----
# ip link set can0 type can bitrate 125000 dbitrate 8000000 fd on
RTNETLINK answers: Operation not supported

Please try:

# ip link set can0 type can bitrate 125000 dbitrate 8000000 fd on fd-non-iso on

The driver for the M_CAN IP core 3.0.x in the mainline kernel supports a
NON_ISO IP core.

This non-iso setting is fixed with this v3.0.x M_CAN and we decided to make this
configuration explicit - as all other options run into a mess.

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit?id=bb208f144cf
3f59d8f89a09a80efd04389718907

Did that help?

Thank you very much!

You are very helpful!


Best Regards,
Wenyou Yang