36 lines
1 KiB
Plaintext
36 lines
1 KiB
Plaintext
|
The APM X-Gene SLIMpro mailbox is used to communicate messages between
|
||
|
|
the ARM64 processors and the Cortex M3 (dubbed SLIMpro). It uses a simple
|
||
|
|
interrupt based door bell mechanism and can exchange simple messages using the
|
||
|
|
internal registers.
|
||
|
|
|
||
|
|
There are total of 8 interrupts in this mailbox. Each used for an individual
|
||
|
|
door bell (or mailbox channel).
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
- compatible: Should be as "apm,xgene-slimpro-mbox".
|
||
|
|
|
||
|
|
- reg: Contains the mailbox register address range.
|
||
|
|
|
||
|
|
- interrupts: 8 interrupts must be from 0 to 7, interrupt 0 define the
|
||
|
|
the interrupt for mailbox channel 0 and interrupt 1 for
|
||
|
|
mailbox channel 1 and so likewise for the reminder.
|
||
|
|
|
||
|
|
- #mbox-cells: only one to specify the mailbox channel number.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
|
||
|
|
Mailbox Node:
|
||
|
|
mailbox: mailbox@10540000 {
|
||
|
|
compatible = "apm,xgene-slimpro-mbox";
|
||
|
|
reg = <0x0 0x10540000 0x0 0xa000>;
|
||
|
|
#mbox-cells = <1>;
|
||
|
|
interrupts = <0x0 0x0 0x4>,
|
||
|
|
<0x0 0x1 0x4>,
|
||
|
|
<0x0 0x2 0x4>,
|
||
|
|
<0x0 0x3 0x4>,
|
||
|
|
<0x0 0x4 0x4>,
|
||
|
|
<0x0 0x5 0x4>,
|
||
|
|
<0x0 0x6 0x4>,
|
||
|
|
<0x0 0x7 0x4>,
|
||
|
|
};
|