18c2ecf20Sopenharmony_ciWhat:		/sys/devices/platform/at91_can/net/<iface>/mb0_id
28c2ecf20Sopenharmony_ciDate:		January 2011
38c2ecf20Sopenharmony_ciKernelVersion:	2.6.38
48c2ecf20Sopenharmony_ciContact:	Marc Kleine-Budde <kernel@pengutronix.de>
58c2ecf20Sopenharmony_ciDescription:
68c2ecf20Sopenharmony_ci		Value representing the can_id of mailbox 0.
78c2ecf20Sopenharmony_ci
88c2ecf20Sopenharmony_ci		Default: 0x7ff (standard frame)
98c2ecf20Sopenharmony_ci
108c2ecf20Sopenharmony_ci		Due to a chip bug (errata 50.2.6.3 & 50.3.5.3 in
118c2ecf20Sopenharmony_ci		"AT91SAM9263 Preliminary 6249H-ATARM-27-Jul-09") the
128c2ecf20Sopenharmony_ci		contents of mailbox 0 may be send under certain
138c2ecf20Sopenharmony_ci		conditions (even if disabled or in rx mode).
148c2ecf20Sopenharmony_ci
158c2ecf20Sopenharmony_ci		The workaround in the errata suggests not to use the
168c2ecf20Sopenharmony_ci		mailbox and load it with an unused identifier.
178c2ecf20Sopenharmony_ci
188c2ecf20Sopenharmony_ci		In order to use an extended can_id add the
198c2ecf20Sopenharmony_ci		CAN_EFF_FLAG (0x80000000U) to the can_id. Example:
208c2ecf20Sopenharmony_ci
218c2ecf20Sopenharmony_ci		- standard id 0x7ff::
228c2ecf20Sopenharmony_ci
238c2ecf20Sopenharmony_ci		    echo 0x7ff      > /sys/class/net/can0/mb0_id
248c2ecf20Sopenharmony_ci
258c2ecf20Sopenharmony_ci		- extended id 0x1fffffff::
268c2ecf20Sopenharmony_ci
278c2ecf20Sopenharmony_ci		    echo 0x9fffffff > /sys/class/net/can0/mb0_id
28