1The PDC driver manages data transfer to and from various offload engines 2on some Broadcom SoCs. An SoC may have multiple PDC hardware blocks. There is 3one device tree entry per block. 4 5Required 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 12Optional properties: 13- brcm,use-bcm-hdr: present if a BCM header precedes each frame. 14 15Example: 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 }; 24