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- What: /sys/devices/platform/at91_can/net/<iface>/mb0_id
- Date: January 2011
- KernelVersion: 2.6.38
- Contact: Marc Kleine-Budde <kernel@pengutronix.de>
- Description:
- Value representing the can_id of mailbox 0.
- Default: 0x7ff (standard frame)
- Due to a chip bug (errata 50.2.6.3 & 50.3.5.3 in
- "AT91SAM9263 Preliminary 6249H-ATARM-27-Jul-09") the
- contents of mailbox 0 may be send under certain
- conditions (even if disabled or in rx mode).
- The workaround in the errata suggests not to use the
- mailbox and load it with an unused identifier.
- In order to use an extended can_id add the
- CAN_EFF_FLAG (0x80000000U) to the can_id. Example:
- - standard id 0x7ff:
- echo 0x7ff > /sys/class/net/can0/mb0_id
- - extended id 0x1fffffff:
- echo 0x9fffffff > /sys/class/net/can0/mb0_id
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