#!/usr/bin/env bash

EXTRA_LINUX_MODULES+=('CONFIG_R8169')
# Q: What requires this option to be enabled?
# A: Enabling this option adds support for the Realtek RTL8125 2.5GbE Controller
#    that is present on the Radxa Rock 5 Model B SBC, connected via the PCIe bus.
#    ```sh
#    $ sudo lspci -k
#    0004:01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)
#            Subsystem: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller
#            Kernel driver in use: r8169
#            Kernel modules: r8169
#    ```
#
# Q: Why wasn't this option enabled by `make defconfig`?
# A: There are two reasons for this:
#    1. None of the symbols that are enabled by the defconfig (built-in or
#       otherwise)--that are needed by CONFIG_R8169--"select" this option. The
#       dependencies are already enabled (built-in or otherwise). So all that
#       needs to be done is to enable this tristate module as a **loadable module**.
#    2. Since this Ethernet controller is connected via the PCIe bus and is not
#       the Ethernet PHY offered by the RK3588 SoC itself, it is not selected
#       by 'CONFIG_ARCH_ROCKCHIP' either.