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aaditya reacted to piter75 in Rock PI 4
IMHO It could never work with mainline kernel.
At first it was named "RockPi-4B" in Armbian's custom device tree and then it was renamed to "Radxa ROCK Pi 4" following Rock Pi 4's device tree upstreaming somewhere around July.
At this point you could:
use "default" image which should work fine with "libmraa" make yourself and overlay with a model change to survive kernel updates try adjusting "libmraa" to make it work with mainline kernel (and upstreaming the change) - probably by the means of verifying that "compatible" contains "radxa,rockpi4" 3rd option would be best in the long run IMO.
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aaditya reacted to NicoD in armbian can not boot in Rock Pi4 v1.4
Armbian uses only 1 partition. So that's not a problem. When the led blinks it should mean it's is booting.
I think for all RK3399 devices the baud rate is : 1500000
Could be only for the M4 tho. Be sure to connect the correct wires. you've got to revers the data wires. RX -> TX and TX -> RX.
Not all serial programs seems to be able to use 1500000 baud rate. I've used putty in the past and that worked I think? There's other posts on the forum about what program is bes for serial use.
The 5.3 is a mainline. Not an updated version. There is less support for this as it's not the default rk3399 kernel.
I'll try some images an mine and see what happens.
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aaditya reacted to martinayotte in USB-TTL converter for RK3399 @ 1500000 bps
I've almost all my boards hooked up with either FDTI, PL2x0x but mostly CH340 and work well with all my boards, including RockPro64, RockPi, OPi-RK3399.
The only one that bother me is the NanoPCT4, where USB-TTL RX works Ok but not TX, so I can't stop U-boot for example.
This NanoPCT4 issue is probably due to a protective resistor R252 which is a 2K2, I will probably try one day to short that one to see if is it the cause ...