Rockchip mailbox
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The Rockchip mailbox is used by the Rockchip CPU cores to communicate
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requests to MCU processor.
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Refer to ./mailbox.txt for generic information about mailbox device-tree
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bindings.
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Required properties:
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- compatible: should be one of the following.
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- "rockchip,rk3368-mbox" for rk3368
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- reg: physical base address of the controller and length of memory mapped
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region.
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- interrupts: The interrupt number to the cpu. The interrupt specifier format
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depends on the interrupt controller.
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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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- rockchip,txpoll-period-ms: TX Done polling interval in milliseconds.
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Example:
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--------
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/* RK3368 */
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mbox: mbox@ff6b0000 {
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compatible = "rockchip,rk3368-mailbox";
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reg = <0x0 0xff6b0000 0x0 0x1000>,
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interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 149 IRQ_TYPE_LEVEL_HIGH>;
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#mbox-cells = <1>;
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};
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