On Fri, Oct 27, 2017 at 02:15:02PM +0800, Kaihua Zhong wrote:
> From: Leo Yan <leo.yan@xxxxxxxxxx>
>
> Introduce a binding for the Hi3660 mailbox controller, the mailbox is
> used within application processor (AP), communication processor (CP),
> HIFI and MCU, etc.
>
> Cc: John Stultz <john.stultz@xxxxxxxxxx>
> Cc: Guodong Xu <guodong.xu@xxxxxxxxxx>
> Cc: Haojian Zhuang <haojian.zhuang@xxxxxxxxxx>
> Cc: Niranjan Yadla <nyadla@xxxxxxxxxxx>
> Cc: Raj Pawate <pawateb@xxxxxxxxxxx>
> Signed-off-by: Leo Yan <leo.yan@xxxxxxxxxx>
> ---
> .../bindings/mailbox/hisilicon,hi3660-mailbox.txt | 52 ++++++++++++++++++++++
> 1 file changed, 52 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/mailbox/hisilicon,hi3660-mailbox.txt
>
> diff --git a/Documentation/devicetree/bindings/mailbox/hisilicon,hi3660-mailbox.txt b/Documentation/devicetree/bindings/mailbox/hisilicon,hi3660-mailbox.txt
> new file mode 100644
> index 0000000..8a8d7e1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mailbox/hisilicon,hi3660-mailbox.txt
> @@ -0,0 +1,52 @@
> +Hisilicon Hi3660 Mailbox Driver
Bindings are for h/w, not drivers.
> +
> +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 {
clock@e896b500
> + compatible = "hisilicon,hi3660-stub-clk";
> + reg = <0x0 0xe896b500 0x0 0x0100>;
> + #clock-cells = <1>;
> + mbox-names = "mbox-tx";
Don't need -names when there is only one. Plus "mbox-" part is
redundant.
> + mboxes = <&mailbox 13 3 0>;
> +};
> --
> 1.9.1
>
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