| The PDC driver manages data transfer to and from various offload engines |
| on some Broadcom SoCs. An SoC may have multiple PDC hardware blocks. There is |
| one device tree entry per block. On some chips, the PDC functionality is |
| handled by the FA2 (Northstar Plus). |
| |
| Required properties: |
| - compatible : Should be "brcm,iproc-pdc-mbox" or "brcm,iproc-fa2-mbox" for |
| FA2/Northstar Plus. |
| - reg: Should contain PDC registers location and length. |
| - interrupts: Should contain the IRQ line for the PDC. |
| - #mbox-cells: 1 |
| - brcm,rx-status-len: Length of metadata preceding received frames, in bytes. |
| |
| Optional properties: |
| - brcm,use-bcm-hdr: present if a BCM header precedes each frame. |
| |
| Example: |
| pdc0: iproc-pdc0@0x612c0000 { |
| compatible = "brcm,iproc-pdc-mbox"; |
| reg = <0 0x612c0000 0 0x445>; /* PDC FS0 regs */ |
| interrupts = <GIC_SPI 187 IRQ_TYPE_LEVEL_HIGH>; |
| #mbox-cells = <1>; /* one cell per mailbox channel */ |
| brcm,rx-status-len = <32>; |
| brcm,use-bcm-hdr; |
| }; |
