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1The APM X-Gene SLIMpro mailbox is used to communicate messages between2the ARM64 processors and the Cortex M3 (dubbed SLIMpro). It uses a simple3interrupt based door bell mechanism and can exchange simple messages using the4internal registers.5 6There are total of 8 interrupts in this mailbox. Each used for an individual7door bell (or mailbox channel).8 9Required properties:10- compatible: Should be as "apm,xgene-slimpro-mbox".11 12- reg: Contains the mailbox register address range.13 14- interrupts: 8 interrupts must be from 0 to 7, interrupt 0 define the15 the interrupt for mailbox channel 0 and interrupt 1 for16 mailbox channel 1 and so likewise for the reminder.17 18- #mbox-cells: only one to specify the mailbox channel number.19 20Example:21 22Mailbox Node:23 mailbox: mailbox@10540000 {24 compatible = "apm,xgene-slimpro-mbox";25 reg = <0x0 0x10540000 0x0 0xa000>;26 #mbox-cells = <1>;27 interrupts = <0x0 0x0 0x4>,28 <0x0 0x1 0x4>,29 <0x0 0x2 0x4>,30 <0x0 0x3 0x4>,31 <0x0 0x4 0x4>,32 <0x0 0x5 0x4>,33 <0x0 0x6 0x4>,34 <0x0 0x7 0x4>,35 };36