1What: /sys/devices/platform/at91_can/net/<iface>/mb0_id 2Date: January 2011 3KernelVersion: 2.6.38 4Contact: Marc Kleine-Budde <kernel@pengutronix.de> 5Description: 6 Value representing the can_id of mailbox 0. 7 8 Default: 0x7ff (standard frame) 9 10 Due to a chip bug (errata 50.2.6.3 & 50.3.5.3 in 11 "AT91SAM9263 Preliminary 6249H-ATARM-27-Jul-09") the 12 contents of mailbox 0 may be send under certain 13 conditions (even if disabled or in rx mode). 14 15 The workaround in the errata suggests not to use the 16 mailbox and load it with an unused identifier. 17 18 In order to use an extended can_id add the 19 CAN_EFF_FLAG (0x80000000U) to the can_id. Example: 20 21 - standard id 0x7ff:: 22 23 echo 0x7ff > /sys/class/net/can0/mb0_id 24 25 - extended id 0x1fffffff:: 26 27 echo 0x9fffffff > /sys/class/net/can0/mb0_id 28