162306a36Sopenharmony_ciWhat:		/sys/devices/platform/at91_can/net/<iface>/mb0_id
262306a36Sopenharmony_ciDate:		January 2011
362306a36Sopenharmony_ciKernelVersion:	2.6.38
462306a36Sopenharmony_ciContact:	Marc Kleine-Budde <kernel@pengutronix.de>
562306a36Sopenharmony_ciDescription:
662306a36Sopenharmony_ci		Value representing the can_id of mailbox 0.
762306a36Sopenharmony_ci
862306a36Sopenharmony_ci		Default: 0x7ff (standard frame)
962306a36Sopenharmony_ci
1062306a36Sopenharmony_ci		Due to a chip bug (errata 50.2.6.3 & 50.3.5.3 in
1162306a36Sopenharmony_ci		"AT91SAM9263 Preliminary 6249H-ATARM-27-Jul-09") the
1262306a36Sopenharmony_ci		contents of mailbox 0 may be send under certain
1362306a36Sopenharmony_ci		conditions (even if disabled or in rx mode).
1462306a36Sopenharmony_ci
1562306a36Sopenharmony_ci		The workaround in the errata suggests not to use the
1662306a36Sopenharmony_ci		mailbox and load it with an unused identifier.
1762306a36Sopenharmony_ci
1862306a36Sopenharmony_ci		In order to use an extended can_id add the
1962306a36Sopenharmony_ci		CAN_EFF_FLAG (0x80000000U) to the can_id. Example:
2062306a36Sopenharmony_ci
2162306a36Sopenharmony_ci		- standard id 0x7ff::
2262306a36Sopenharmony_ci
2362306a36Sopenharmony_ci		    echo 0x7ff      > /sys/class/net/can0/mb0_id
2462306a36Sopenharmony_ci
2562306a36Sopenharmony_ci		- extended id 0x1fffffff::
2662306a36Sopenharmony_ci
2762306a36Sopenharmony_ci		    echo 0x9fffffff > /sys/class/net/can0/mb0_id
28