Man pages matching name u-boot-install-sunxi64 in section 8:

u-boot-install-sunxi64.8.en	debian 10 / u-boot-sunxi
u-boot-install-sunxi64.8.en	debian 11 / u-boot-sunxi
u-boot-install-sunxi64.8.en	debian 12 / u-boot-sunxi
u-boot-install-sunxi64.8.en	debian 13 / u-boot-sunxi