On 07/28/2017 06:57 AM, Kurt Van Dijck wrote:
So while _a_ transceiver may be spec'd to 1MBit during arbitration, CAN FD packets may IMHO exceed that speed during data phase.
When the bitrate is limited to 1Mbit/s you are ONLY allowed to use 1Mbit/s in the data section too (either with CAN or CAN FD).
That was the whole point of CAN FD: exceed the limits required for correct arbitration on transceiver & wire.
No. CAN FD is about a different frame format with up to 64 bytes AND the possibility to increase the bitrate in the data section of the frame.
So I do not agree on the single bandwidth limitation.
The transceiver provides a single maximum bandwidth. It's an ISO Layer 1 device.
The word 'max-arbitration-bitrate' makes the difference very clear.
I think you are mixing up ISO layer 1 and ISO layer 2. Regards, Oliver -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
