26 lines
967 B
Plaintext
26 lines
967 B
Plaintext
|
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@612c0000 {
|
||
|
|
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;
|
||
|
|
};
|