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