Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) ST Microelectronics Mailbox Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) Each ST Mailbox IP currently consists of 4 instances of 32 channels.  Messages
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) are passed between Application and Remote processors using shared memory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) Controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) ----------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) - compatible		: Should be "st,stih407-mailbox"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) - reg			: Offset and length of the device's register set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) - mbox-name		: Name of the mailbox
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) - #mbox-cells:		: Must be 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 			  <&phandle instance channel direction>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 			    phandle   : Label name of controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 			    instance  : Instance number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 			    channel   : Channel number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) Optional properties
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) - interrupts		: Contains the IRQ line for a Rx mailbox
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) mailbox0: mailbox@0  {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	compatible	= "st,stih407-mailbox";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	reg		= <0x08f00000 0x1000>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	interrupts	= <GIC_SPI 1 IRQ_TYPE_NONE>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	#mbox-cells	= <2>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	mbox-name	= "a9";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) Client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) ------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) - compatible		: Many (See the client docs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) - reg			: Shared (between Application and Remote) memory address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) - mboxes		: Standard property to specify a Mailbox (See ./mailbox.txt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 			  Cells must match 'mbox-cells' (See Controller docs above)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) Optional properties
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) - mbox-names		: Name given to channels seen in the 'mboxes' property.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) mailbox_test {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	compatible	= "mailbox-test";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	reg		= <0x[shared_memory_address], [shared_memory_size]>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	mboxes		= <&mailbox2 0 1>, <&mailbox0 2 1>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	mbox-names	= "tx",	"rx";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };