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