0001 The APM X-Gene SLIMpro mailbox is used to communicate messages between
0002 the ARM64 processors and the Cortex M3 (dubbed SLIMpro). It uses a simple
0003 interrupt based door bell mechanism and can exchange simple messages using the
0004 internal registers.
0005
0006 There are total of 8 interrupts in this mailbox. Each used for an individual
0007 door bell (or mailbox channel).
0008
0009 Required properties:
0010 - compatible: Should be as "apm,xgene-slimpro-mbox".
0011
0012 - reg: Contains the mailbox register address range.
0013
0014 - interrupts: 8 interrupts must be from 0 to 7, interrupt 0 define the
0015 the interrupt for mailbox channel 0 and interrupt 1 for
0016 mailbox channel 1 and so likewise for the reminder.
0017
0018 - #mbox-cells: only one to specify the mailbox channel number.
0019
0020 Example:
0021
0022 Mailbox Node:
0023 mailbox: mailbox@10540000 {
0024 compatible = "apm,xgene-slimpro-mbox";
0025 reg = <0x0 0x10540000 0x0 0xa000>;
0026 #mbox-cells = <1>;
0027 interrupts = <0x0 0x0 0x4>,
0028 <0x0 0x1 0x4>,
0029 <0x0 0x2 0x4>,
0030 <0x0 0x3 0x4>,
0031 <0x0 0x4 0x4>,
0032 <0x0 0x5 0x4>,
0033 <0x0 0x6 0x4>,
0034 <0x0 0x7 0x4>,
0035 };
