Documentation/devicetree/bindings/mailbox/altera-mailbox.txt

   1 Altera Mailbox Driver
   2 =====================
   3
   4 Required properties:
   5 - compatible :  "altr,mailbox-1.0".
   6 - reg :         physical base address of the mailbox and length of
   7                 memory mapped region.
   8 - #mbox-cells:  Common mailbox binding property to identify the number
   9                 of cells required for the mailbox specifier. Should be 1.
  10
  11 Optional properties:
  12 - interrupts :          interrupt number. The interrupt specifier format
  13                         depends on the interrupt controller parent.
  14
  15 Example:
  16         mbox_tx: mailbox@100 {
  17                 compatible = "altr,mailbox-1.0";
  18                 reg = <0x100 0x8>;
  19                 interrupt-parent = < &gic_0 >;
  20                 interrupts = <5>;
  21                 #mbox-cells = <1>;
  22         };
  23
  24         mbox_rx: mailbox@200 {
  25                 compatible = "altr,mailbox-1.0";
  26                 reg = <0x200 0x8>;
  27                 interrupt-parent = < &gic_0 >;
  28                 interrupts = <6>;
  29                 #mbox-cells = <1>;
  30         };
  31
  32 Mailbox client
  33 ===============
  34 "mboxes" and the optional "mbox-names" (please see
  35 Documentation/devicetree/bindings/mailbox/mailbox.txt for details). Each value
  36 of the mboxes property should contain a phandle to the mailbox controller
  37 device node and second argument is the channel index. It must be 0 (hardware
  38 support only one channel).The equivalent "mbox-names" property value can be
  39 used to give a name to the communication channel to be used by the client user.
  40
  41 Example:
  42         mclient0: mclient0@400 {
  43                 compatible = "client-1.0";
  44                 reg = <0x400 0x10>;
  45                 mbox-names = "mbox-tx", "mbox-rx";
  46                 mboxes = <&mbox_tx 0>,
  47                          <&mbox_rx 0>;
  48         };