Hi,

I am using rockpro64 "https://www.pine64.org/?product=rockpro64-4gb-single-board-computer" that uses Rockchip RK3399 Hexa-Core (dual ARM Cortex A72 and quad ARM Cortex A53) 64-Bit Processor.

 

My simple application is to have a UART communication.

When i run serial write with 1500000 Baudrate, then it works fine. But if i lower the baudrate such as 115200, then it throws garbage value. 

So can i get some suggestions here?

Thanks.

The baudrate is 1500000. It's as simple as that.
A lower baudrate makes it so that you can't communicate with it, since it's not the right baudrate.

2 hours ago, NicoD said:

It's as simple as that.

no..

 

It could probably set to 115200 in DT. but then it had to be changed in u-boot as well.. and to keep stuff in a proper order.. for all RK3399 boards.. Is it worth to write a whole patchseries just for such a change.. I thought about it but I'm not sure..

1 minute ago, chwe said:

Is it worth to write a whole patchseries just for such a change..

I don't think it is worth the effort, what would be the gain ? ...

my UART script which does some funny monitoring in case the SBC doesn't respond anymore wouldn't need a $BAUDRATE variable anymore....

The only gain IMO is that all other armbian supported SBCs run (to my knowledge) at 115200... But as said.. Don't think it's really worth it..