| 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 |