mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 08:46:49 +07:00
648d1382d4
Introduce a binding for the Hi3660 mailbox controller, the mailbox is used within application processor (AP), communication processor (CP), HIFI and MCU, etc. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
52 lines
1.4 KiB
Plaintext
52 lines
1.4 KiB
Plaintext
Hisilicon Hi3660 Mailbox Controller
|
|
|
|
Hisilicon Hi3660 mailbox controller supports up to 32 channels. Messages
|
|
are passed between processors, including application & communication
|
|
processors, MCU, HIFI, etc. Each channel is unidirectional and accessed
|
|
by using MMIO registers; it supports maximum to 8 words message.
|
|
|
|
Controller
|
|
----------
|
|
|
|
Required properties:
|
|
- compatible: : Shall be "hisilicon,hi3660-mbox"
|
|
- reg: : Offset and length of the device's register set
|
|
- #mbox-cells: : Must be 3
|
|
<&phandle channel dst_irq ack_irq>
|
|
phandle : Label name of controller
|
|
channel : Channel number
|
|
dst_irq : Remote interrupt vector
|
|
ack_irq : Local interrupt vector
|
|
|
|
- interrupts: : Contains the two IRQ lines for mailbox.
|
|
|
|
Example:
|
|
|
|
mailbox: mailbox@e896b000 {
|
|
compatible = "hisilicon,hi3660-mbox";
|
|
reg = <0x0 0xe896b000 0x0 0x1000>;
|
|
interrupts = <0x0 0xc0 0x4>,
|
|
<0x0 0xc1 0x4>;
|
|
#mbox-cells = <3>;
|
|
};
|
|
|
|
Client
|
|
------
|
|
|
|
Required properties:
|
|
- compatible : See the client docs
|
|
- mboxes : Standard property to specify a Mailbox (See ./mailbox.txt)
|
|
Cells must match 'mbox-cells' (See Controller docs above)
|
|
|
|
Optional properties
|
|
- mbox-names : Name given to channels seen in the 'mboxes' property.
|
|
|
|
Example:
|
|
|
|
stub_clock: stub_clock@e896b500 {
|
|
compatible = "hisilicon,hi3660-stub-clk";
|
|
reg = <0x0 0xe896b500 0x0 0x0100>;
|
|
#clock-cells = <1>;
|
|
mboxes = <&mailbox 13 3 0>;
|
|
};
|