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Commit a7065bc3 authored by Caesar Wang's avatar Caesar Wang Committed by Jassi Brar
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dt-bindings: rockchip-mailbox: Add mailbox controller document on Rockchip SoCs 



This add the necessary binding documentation for mailbox
found on RK3368 SoC.

Signed-off-by: default avatarCaesar Wang <wxt@rock-chips.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarJassi Brar <jaswinder.singh@linaro.org>
parent 14d653af

Documentation/devicetree/bindings/mailbox/rockchip-mailbox.txt

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+32 −0
Original line number Diff line number Diff line 
Rockchip mailbox



The Rockchip mailbox is used by the Rockchip CPU cores to communicate

requests to MCU processor.



Refer to ./mailbox.txt for generic information about mailbox device-tree

bindings.



Required properties:



 - compatible: should be one of the following.

   - "rockchip,rk3368-mbox" for rk3368

 - reg: physical base address of the controller and length of memory mapped

	region.

 - interrupts: The interrupt number to the cpu. The interrupt specifier format

	depends on the interrupt controller.

 - #mbox-cells: Common mailbox binding property to identify the number

	of cells required for the mailbox specifier. Should be 1



Example:

--------



/* RK3368 */

mbox: mbox@ff6b0000 {

	compatible = "rockchip,rk3368-mailbox";

	reg = <0x0 0xff6b0000 0x0 0x1000>,

	interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>,

		     <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,

		     <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>,

		     <GIC_SPI 149 IRQ_TYPE_LEVEL_HIGH>;

	#mbox-cells = <1>;

};