This section describes how to add a driver (newDriver.c, where newDriver is an Ethernet PHY) to an SDK on a linux system that is either missing the driver or using an outdated version.

In the SDK, find the Linux kernel directory (LKD). An example file path looks like:

SDK_Install_Directory/board-support/TI-linux-kernel/

TI-Linux-kernel is the LKD in this example. From here, you can navigate to:

LKD/drivers/net/phy/

Copy newDriver.c into this directory. Within this same directory are Makefile and Kconfig , both files need to be edited for newDriver.c to be built.

Edit Makefile

Add the following line to the Makefile. Note the assignment is newDriver.o and not newDriver.c

obj-$(CONFIG_newDriver_PHY)    += newDriver.o

Edit Kconfig

Add the following lines to the Kconfig,

config newDriver PHY
    tristate "<Insert Company name> newDriver PHY"
    --help--
        Supports the newDriver PHY.

After both the Makefile and Kconfig files have been edited, return to the LKD. From here, go to:

LKD/arch/arm64/configs

Here you can find a defconfig file, add the following line:

CONFIG_newDriver_PHY = y

The naming convention, CONFIG_newDriver_PHY, needs to match what was set in the Makefile.

From here, you can return to the SDK install directory and run the make command on the terminal.