1 Hisilicon Hi3660 Mailbox Controller
2
3 Hisilicon Hi3660 mailbox controller supports up to 32 channels. Messages
4 are passed between processors, including application & communication
5 processors, MCU, HIFI, etc. Each channel is unidirectional and accessed
6 by using MMIO registers; it supports maximum to 8 words message.
7
8 Controller
9 ----------
10
11 Required properties:
12 - compatible: : Shall be "hisilicon,hi3660-mbox"
13 - reg: : Offset and length of the device's register set
14 - #mbox-cells: : Must be 3
15 <&phandle channel dst_irq ack_irq>
16 phandle : Label name of controller
17 channel : Channel number
18 dst_irq : Remote interrupt vector
19 ack_irq : Local interrupt vector
20
21 - interrupts: : Contains the two IRQ lines for mailbox.
22
23 Example:
24
25 mailbox: mailbox@e896b000 {
26 compatible = "hisilicon,hi3660-mbox";
27 reg = <0x0 0xe896b000 0x0 0x1000>;
28 interrupts = <0x0 0xc0 0x4>,
29 <0x0 0xc1 0x4>;
30 #mbox-cells = <3>;
31 };
32
33 Client
34 ------
35
36 Required properties:
37 - compatible : See the client docs
38 - mboxes : Standard property to specify a Mailbox (See ./mailbox.txt)
39 Cells must match 'mbox-cells' (See Controller docs above)
40
41 Optional properties
42 - mbox-names : Name given to channels seen in the 'mboxes' property.
43
44 Example:
45
46 stub_clock: stub_clock@e896b500 {
47 compatible = "hisilicon,hi3660-stub-clk";
48 reg = <0x0 0xe896b500 0x0 0x0100>;
49 #clock-cells = <1>;
50 mboxes = <&mailbox 13 3 0>;
51 };
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