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| -rw-r--r-- | Documentation/devicetree/bindings/mailbox/hisilicon,hi3660-mailbox.txt | 51 |
1 files changed, 51 insertions, 0 deletions
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 000000000000..3e5b4537407d --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/hisilicon,hi3660-mailbox.txt @@ -0,0 +1,51 @@ +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>; +}; |