Documentation/devicetree/bindings/mailbox/brcm,iproc-pdc-mbox.txt

   1 The PDC driver manages data transfer to and from various offload engines
   2 on some Broadcom SoCs. An SoC may have multiple PDC hardware blocks. There is
   3 one device tree entry per block.
   4
   5 Required properties:
   6 - compatible : Should be "brcm,iproc-pdc-mbox".
   7 - reg: Should contain PDC registers location and length.
   8 - interrupts: Should contain the IRQ line for the PDC.
   9 - #mbox-cells: 1
  10 - brcm,rx-status-len: Length of metadata preceding received frames, in bytes.
  11
  12 Optional properties:
  13 - brcm,use-bcm-hdr:  present if a BCM header precedes each frame.
  14
  15 Example:
  16         pdc0: iproc-pdc0@0x612c0000 {
  17                 compatible = "brcm,iproc-pdc-mbox";
  18                 reg = <0 0x612c0000 0 0x445>;  /* PDC FS0 regs */
  19                 interrupts = <GIC_SPI 187 IRQ_TYPE_LEVEL_HIGH>;
  20                 #mbox-cells = <1>;   /* one cell per mailbox channel */
  21                 brcm,rx-status-len = <32>;
  22                 brcm,use-bcm-hdr;
  23         };