Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) What:		/sys/devices/platform/at91_can/net/<iface>/mb0_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Date:		January 2011
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) KernelVersion:	2.6.38
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) Contact:	Marc Kleine-Budde <kernel@pengutronix.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) Description:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 		Value representing the can_id of mailbox 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 		Default: 0x7ff (standard frame)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 		Due to a chip bug (errata 50.2.6.3 & 50.3.5.3 in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 		"AT91SAM9263 Preliminary 6249H-ATARM-27-Jul-09") the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 		contents of mailbox 0 may be send under certain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 		conditions (even if disabled or in rx mode).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 		The workaround in the errata suggests not to use the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 		mailbox and load it with an unused identifier.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 		In order to use an extended can_id add the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		CAN_EFF_FLAG (0x80000000U) to the can_id. Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		- standard id 0x7ff::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		    echo 0x7ff      > /sys/class/net/can0/mb0_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		- extended id 0x1fffffff::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 		    echo 0x9fffffff > /sys/class/net/can0/mb0_id