I have EspressoBin board. I can able to boot Mainline Linux over it and able to access it using primary UART via
micro USB cabe.
As per Linux as well as u-boot source , EspressoBin has two uart (one can be accessed via Micro USB).
I wanted to how second Uart can be accessed , is there any specific way to connect to it , for Instance via GPIO’s
or something like it ?
I wonder where that second UART is. I even doubt if it exists.
I couldn’t find any sign of a second uart on Marvell Armada 3700LP (88F3720) hardware information.
As per Linux as well as u-boot source , EspressoBin has two uart
Please tell more about the software side of the second UART
I was talking about uart1 that can be accessed via pin 24 and pin 26 on P9 GPIO header:
In Linux , its been supported via this patch:
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