1The APM X-Gene SLIMpro mailbox is used to communicate messages between 2the ARM64 processors and the Cortex M3 (dubbed SLIMpro). It uses a simple 3interrupt based door bell mechanism and can exchange simple messages using the 4internal registers. 5 6There are total of 8 interrupts in this mailbox. Each used for an individual 7door 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 the 15 the interrupt for mailbox channel 0 and interrupt 1 for 16 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