In Arch Linux
mkinitcpio -p linux
shows
Possibly missing firmware for module: aic94xx
Possibly missing firmware for module: wd719x
Possibly missing firmware for module: xhci_pci
git clone https://aur.archlinux.org/aic94xx-firmware.git
cd aic94xx-firmware
makepkg -sri
git clone https://aur.archlinux.org/wd719x-firmware.git
cd wd719x-firmware
makepkg -sri
git clone https://aur.archlinux.org/upd72020x-fw.git
cd upd72020x-fw
makepkg -sri
and then mkinitcpio -p linux
again.
Works as advertised! Thank you :)