@Wenyou Yang: Can you please test the two patches posted here:[PATCH 1/2] can: m_can: handle bitrate setup on IP core >= 3.1.xhttp://marc.info/?l=linux-can&m=148883529927720&w=2[PATCH 2/2] can: m_can: handle frame transmission on IP core >= 3.1.xhttp://marc.info/?l=linux-can&m=148883529927718&w=2Tnx & regards,Oliver