Part Number: DRA829VXEVM
Is it possible to connect two DRA829 EVMs in MAC to MAC mode using SGMII connection?
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On DRA829VXEVM the PCIe x2 lane slot can be used to connect two EVMs in SGMII MAC to MAC mode using a PCIe cable.
This PCIe slot (PCIE1) is connected to SERDES1 instance.
Patches & Binaries
Note: If EVM1/2 not specified, then changes apply to both EVMs
EVM1 – SGMII Slave
EVM2 - SGMII Master
Move loading of Main R5F0_0 from R5 SPL to A72 u-boot
Disable SERDES1 configuration from Kernel dts files
Increase number of RX, TX descriptor from 256 to 500 in cpsw9g virtual mac driver
Switch to HDMI display instead of DP display
Use static IP configuration in NDK (ndk.cfg)
Changes for configuring MAC port 2 to SGMII and corresponding SERDES configuration
Steps to test
Kernel components (PSDKLA)
PDK and vision_apps (PSDKRA)
Update the binaries on SD card (If you are using prebuilt binaries, copy j7-main-r5f0_0-fw-salve to EVM1 and j7-main-r5f0_0-fw-master to EVM2. Rename the files to j7-main-r5f0_0-fw)
Boot the board and update the u-boot environment variable to load main R5F0_0 firmware by A72 u-boot (One time setting)
Give static IP to eth1 interface in 192.168.1.x subnet and you can now ping both the EVMs from Linux