Apalis TK1 Can

I’m currently working with a Apalis TK1 on a Ixora 1.1 Board.

I got CAN working with latest Linux image Apalis-TK1_LXDE-Image_2.7b5-20171201.tar.bz2.
Unfortunately it is only working at a bitrate up to 250 kBit/s. For my Application I need a Bitrate of 500 KBit/s.

When I start a candump I get Message: apalis-tk1-k20 spi1.1: K20 FIFO Bug! But I do not receive any Messages.

Kind regards.

What devices are you testing it with? Can you capture the can bus with a scope or a logic analyser when sending/receiving data at 500kb/s?