VAR-MII

Description

var-mii is a Utility that provides the following features:

1. Reading and writing ethernet phy mii registers in Linux
2. Automated test to very Variscite ethernet PHY registers in Linux
3. Automated test to verify Variscite ethernet PHY registers in U-Boot

Reading registers from Linux

Run the following commands on the target device:

Read Registers:

./var-mii <interface> <address> <register>

Write Registers:

./var-mii <interface> <address> <register> <value>

Automated tests in Linux

To run an automated test, run the following command on the target device:

./var-mii

Automated tests in U-Boot

To run an automated test in U-Boot:

1. Connect your host computer to the target devices serial console
2. Boot the target device and interrupt the boot process on U-Boot
3. Quit minicom (or whichever program you use to connect to the serial console)
4. Run on the host computer:

$ ./var-mii <console serial device>
Example:
$ ./var-mii /dev/ttyUSB0

Note: It is important to quit minicom so that it doesn't conflict with var-mii