P4080 PCIe Adapter SDK User Guide Production Release

Freescale Semiconductor
5.1 Selecting 10G Ethernet Interfaces for USDPAA
The Ethernet-related Linux device tree entries determine the use case. This is documented in
the “P4080 DPAA Device Bindings” distributed with the DPAA SDK. The sub-topic is
“Data-Path Acceleration Assist”.
The 1G management interface is always assigned to Linux. The following device tree
snippet shows a Linux private interface and also 10G interface used privately by USDPAA.
ethernet@0 {
compatible = "fsl,p4080-dpa-ethernet-init", "fsl,dpaethernet-init";
fsl,bman-buffer-pools = ;
fsl,qman-channel =
;
fsl,qman-frame-queues-rx = ; fsl,qman-frame-queues-tx =
; fsl,fman-mac =
;
};
ethernet@4 {
compatible = "fsl,p4080-dpa-ethernet", "fsl,dpa-ethernet";
fsl,qman-channel = ;
fsl,fman-mac = ;
};
ethernet@9 {
compatible = "fsl,p4080-dpa-ethernet", "fsl,dpa-ethernet";
fsl,qman-channel = ;
fsl,fman-mac = ;
};
The first ethernet interface is used by the Linux ethernet driver. Ethernet interfaces 4 and 9 are
used by USDPAA. The other interfaces in the dts are not available on the P4080 PCIE adapter.
The table shows the ethernet interfaces are used in SerDes 0x2 configuration supported by the
card.
Deice Tree
Name
© Freescale Semiconductor, Inc., 2011. All rights reserved.
Table 1 P4080 PCIE Adapter Ethernet Interfaces
U-boot Name
ethernet@ FM1@DTSE
1
ethernet@
C2
FM1@TGEC
4 1
U-Boot MAC
Environment
Variable
Linux Name
(udev)
eth1addr fm1-gb1 Motherboad RGMII
eth4addr fm1-10g XAUI
SerDes 0x2 Physical Position
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