GNU Linux-libre 4.14.266-gnu1
[releases.git] / Documentation / devicetree / bindings / mailbox / rockchip-mailbox.txt
1 Rockchip mailbox
2
3 The Rockchip mailbox is used by the Rockchip CPU cores to communicate
4 requests to MCU processor.
5
6 Refer to ./mailbox.txt for generic information about mailbox device-tree
7 bindings.
8
9 Required properties:
10
11  - compatible: should be one of the following.
12    - "rockchip,rk3368-mbox" for rk3368
13  - reg: physical base address of the controller and length of memory mapped
14         region.
15  - interrupts: The interrupt number to the cpu. The interrupt specifier format
16         depends on the interrupt controller.
17  - #mbox-cells: Common mailbox binding property to identify the number
18         of cells required for the mailbox specifier. Should be 1
19
20 Example:
21 --------
22
23 /* RK3368 */
24 mbox: mbox@ff6b0000 {
25         compatible = "rockchip,rk3368-mailbox";
26         reg = <0x0 0xff6b0000 0x0 0x1000>,
27         interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>,
28                      <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
29                      <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>,
30                      <GIC_SPI 149 IRQ_TYPE_LEVEL_HIGH>;
31         #mbox-cells = <1>;
32 };