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1Altera Mailbox Driver2=====================3 4Required properties:5- compatible : "altr,mailbox-1.0".6- reg : physical base address of the mailbox and length of7 memory mapped region.8- #mbox-cells: Common mailbox binding property to identify the number9 of cells required for the mailbox specifier. Should be 1.10 11Optional properties:12- interrupts : interrupt number. The interrupt specifier format13 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 client33===============34"mboxes" and the optional "mbox-names" (please see35Documentation/devicetree/bindings/mailbox/mailbox.txt for details). Each value36of the mboxes property should contain a phandle to the mailbox controller37device node and second argument is the channel index. It must be 0 (hardware38support only one channel).The equivalent "mbox-names" property value can be39used 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