see also:
Ventana Ethernet
The Ventana Family of SBC's has different configurations of ethernet ports across the family.
Hardware Configuration
| Board | Configuration | eth0 | eth1 |
|---|---|---|---|
| GW51xx | Single GigE | IMX6 FEC | - |
| GW52xx | Single GigE | IMX6 FEC | - |
| GW53xx | Dual GigE | IMX6 FEC (J16) | Marvell SKY2 (J17) |
| GW54xx | Dual GigE | IMX6 FEC (J19) | Marvell SKY2 (J20) |
| GW552x | Dual GigE | Intel I210 (J12) | Intel I210 (J9) |
Ethernet Support in Bootloader
The i.MX6 FEC is supported by default in the bootloader, however the Intel i210 on the GW552x is not enabled by default because PCI is disabled in the bootloader by default (see here).
Please note that eth0 on a GW552x is J12 next to the reset button.
Drivers and throughput
Here are some notes on the various Linux drivers that support the Gigabit Ethernet ports discussed above:
- Freescale FEC MAC:
- Used on the GW51xx,GW52xx,GW53xx,GW54xx (Port 1 on boards with 2 ports)
- i.MX6 errata: ERR004512 discusses a throughput limitation limiting the device to appx 470mbps
- fec linux driver
- hardware and drivers for latest BSP's supports common hardware accelerations such as NAPI and checksum offload
- Marvell Yukon2 MAC/PHY:
- Used on GW54xx,GW53xx (Port 2 on boards with 2 ports)
- sky2 linux driver
- hardware and drivers support common hardware accelerations such as NAPI, checksum offload
- hardware and drivers support jumbo frames
- Intel i210 MAC/PHY
- Used on GW552x & GW16083 Ethernet Expansion Board
- igb linux driver
- hardware and driver appear to support common hardware accelerations such as NAPI, checksum offload, and jumbo frames
Throughput test results:
| NIC | Software | Throughput(UDP/TCP) Mbps | |
|---|---|---|---|
| TX | RX | ||
| IMX6 FEC | yocto 1.8 (gw 3.14.48) | 406/423 | 493/588 |
| Intel I210 | yocto 1.8 (gw 3.14.48) | 943/599 | 503/607 |
| Marvell SKY2 | yocto 1.8 (gw 3.14.48) | 829/648 | 730/615 |
| IMX6 FEC | OpenWrt 14.08 (3.14.16) | 270/317 | 495/439 |
| Intel I210 | OpenWrt 14.08 (3.14.16) | 941/600 | 630/411 |
| Marvell SKY2 | OpenWrt 14.08 (3.14.16) | 871/480 | 670/485 |
| IMX6 FEC | OpenWrt 16.02 (4.4.0) | 394/392 | 530/560 |
| Intel I210 | OpenWrt 16.02 (4.4.0) | 940/680 | 870/758 |
| Marvell SKY2 | OpenWrt 16.02 (4.4.0) | 794/534 | 862/878 |
- test results using iperf3 with iptables/ebtables modules removed where applicable
Last modified 6 months ago
Last modified on 02/23/17 13:25:14
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