1Altera Mailbox Driver 2===================== 3 4Required properties: 5- compatible : "altr,mailbox-1.0". 6- reg : physical base address of the mailbox and length of 7 memory mapped region. 8- #mbox-cells: Common mailbox binding property to identify the number 9 of cells required for the mailbox specifier. Should be 1. 10 11Optional properties: 12- interrupts : interrupt number. The interrupt specifier format 13 depends on the interrupt controller parent. 14 15Example: 16 mbox_tx: mailbox@100 { 17 compatible = "altr,mailbox-1.0"; 18 reg = <0x100 0x8>; 19 interrupt-parent = < &gic_0 >; 20 interrupts = <5>; 21 #mbox-cells = <1>; 22 }; 23 24 mbox_rx: mailbox@200 { 25 compatible = "altr,mailbox-1.0"; 26 reg = <0x200 0x8>; 27 interrupt-parent = < &gic_0 >; 28 interrupts = <6>; 29 #mbox-cells = <1>; 30 }; 31 32Mailbox client 33=============== 34"mboxes" and the optional "mbox-names" (please see 35Documentation/devicetree/bindings/mailbox/mailbox.txt for details). Each value 36of the mboxes property should contain a phandle to the mailbox controller 37device node and second argument is the channel index. It must be 0 (hardware 38support only one channel).The equivalent "mbox-names" property value can be 39used to give a name to the communication channel to be used by the client user. 40 41Example: 42 mclient0: mclient0@400 { 43 compatible = "client-1.0"; 44 reg = <0x400 0x10>; 45 mbox-names = "mbox-tx", "mbox-rx"; 46 mboxes = <&mbox_tx 0>, 47 <&mbox_rx 0>; 48 }; 49