BeaglePlay:How to to activate UART to enable RS-485 communication?

Hi Expert,

I can enable UART by the cmd on BBB:

sudo nano /boot/uEnv.txt

uboot_overlay_addr0=/lib/firmware/BB-UART1-00A0.dtbo

uboot_overlay_addr1=/lib/firmware/BB-UART2-00A0.dtbo

uboot_overlay_addr2=/lib/firmware/BB-UART4-00A0.dtbo

sudo reboot

Could I do the same thing on BeaglePlay?

Thanks

Daniel