View source for Template:RK3399-DebugPort

== Access hardware==
===Access Serial Interface===

For now only UART4 is available for users:

::{| class="wikitable"
|-
|Serial Interface || Serial Device
|-
|UART0  || Used by Bluetooth
|-
|UART1   ||  Used by Gbps Ethernet  
|-
|UART2  ||  Used by Serial Debug Port
|-
|UART3  ||  Used by Gbps Ethernet
|-
|UART4  ||  Available, device name is /dev/ttyS4 (note: this is only applicable for ROM released after 20180618)
|}