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    Subject[PATCH 1/6] mailbox: dt: Supply bindings for ST's Mailbox IP
    Date
    Signed-off-by: Lee Jones <lee.jones@linaro.org>
    ---
    .../devicetree/bindings/mailbox/sti-mailbox.txt | 53 ++++++++++++++++++++++
    1 file changed, 53 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/mailbox/sti-mailbox.txt

    diff --git a/Documentation/devicetree/bindings/mailbox/sti-mailbox.txt b/Documentation/devicetree/bindings/mailbox/sti-mailbox.txt
    new file mode 100644
    index 0000000..3390e3e
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/mailbox/sti-mailbox.txt
    @@ -0,0 +1,53 @@
    +ST Microelectronics Mailbox Driver
    +
    +Each ST Mailbox IP currently consists of 4 instances of 32 channels. Messages
    +are passed between Application and Remote processors using shared memory.
    +
    +Controller
    +----------
    +
    +Required properties:
    +- compatible : Should be "st,stih407-mailbox"
    +- reg : Offset and length of the device's register set
    +- mbox-name : Name of the mailbox
    +- #mbox-cells: : Must be 3
    + <&phandle instance channel direction>
    + phandle : Label name of controller
    + instance : Instance number
    + channel : Channel number
    + direction : Data flow direction; MBOX_TX or MBOX_RX
    +
    +Optional properties
    +- interrupts : Contains the IRQ line for a Rx mailbox
    + [NB: The absence of this property denotes Tx only]
    +
    +Example:
    +
    +mailbox0: mailbox@0 {
    + compatible = "st,stih407-mailbox";
    + reg = <0x8f00000 0x1000>;
    + interrupts = <GIC_SPI 1 IRQ_TYPE_NONE>;
    + #mbox-cells = <3>;
    + mbox-name = "a9";
    +};
    +
    +Client
    +------
    +
    +Required properties:
    +- compatible : Many (See the client docs)
    +- reg : Shared (between Application and Remote) memory address
    +- 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:
    +
    +mailbox_test {
    + compatible = "mailbox_test";
    + reg = <0x[shared_memory_address], [shared_memory_size]>;
    + mboxes = <&mailbox2 0 1 MBOX_TX>, <&mailbox0 2 1 MBOX_RX>;
    + mbox-names = "tx", "rx";
    +};
    --
    1.9.1


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