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48 lines
1.4 KiB
48 lines
1.4 KiB
Altera Mailbox Driver |
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===================== |
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Required properties: |
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- compatible : "altr,mailbox-1.0". |
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- reg : physical base address of the mailbox and length of |
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memory mapped region. |
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- #mbox-cells: Common mailbox binding property to identify the number |
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of cells required for the mailbox specifier. Should be 1. |
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Optional properties: |
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- interrupts : interrupt number. The interrupt specifier format |
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depends on the interrupt controller parent. |
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Example: |
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mbox_tx: mailbox@100 { |
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compatible = "altr,mailbox-1.0"; |
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reg = <0x100 0x8>; |
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interrupt-parent = < &gic_0 >; |
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interrupts = <5>; |
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#mbox-cells = <1>; |
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}; |
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mbox_rx: mailbox@200 { |
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compatible = "altr,mailbox-1.0"; |
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reg = <0x200 0x8>; |
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interrupt-parent = < &gic_0 >; |
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interrupts = <6>; |
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#mbox-cells = <1>; |
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}; |
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Mailbox client |
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=============== |
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"mboxes" and the optional "mbox-names" (please see |
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Documentation/devicetree/bindings/mailbox/mailbox.txt for details). Each value |
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of the mboxes property should contain a phandle to the mailbox controller |
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device node and second argument is the channel index. It must be 0 (hardware |
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support only one channel).The equivalent "mbox-names" property value can be |
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used to give a name to the communication channel to be used by the client user. |
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Example: |
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mclient0: mclient0@400 { |
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compatible = "client-1.0"; |
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reg = <0x400 0x10>; |
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mbox-names = "mbox-tx", "mbox-rx"; |
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mboxes = <&mbox_tx 0>, |
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<&mbox_rx 0>; |
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};
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