Hi Marc,

many thx for your fast answer.

Am 2015-08-27 15:23, schrieb Marc Kleine-Budde:

On 08/27/2015 03:04 PM, Gerhard Bertelsmann wrote:

quoted

quoted

It it's sja1000 compatible, it should work out of the box with the
existing sja1000 device tree binding.

the Allwinner CAN IP is very similar but not exactly a SJA1000, e g. 
the
registers differ and some are 32 bit wide and not 8 bit.

Which are the registers that have the upper 24 bit used?

CAN_STA_REG  status register
CAN_BUS_TIME bus timing
CAN_REC_REG  errot counter

Some regs also have a different address

quoted

So the question is: change the sja1000 and the platform file for
"quirks" or write a new independent one ?

Depends on the actual differences, but I'd go for quirks first.

quoted

Which way do you prefer or better: which driver will be accepted for
mainline ?

The github driver lacks a proper driver model binding, so that's not
mainline ready.

That would be not a huge problem IMHO ...

Marc

Gerd