On Sat, Mar 22, 2025 at 06:49:11PM +1000, . wrote: > Device: Orange Pi 5. > > U-Boot is installed in the SPI memory. I connected the device to my laptop > > via UART, CH340G adapter, 1500000 baud rate. Connected: gnd-gnd, tx-rx, > > rx-tx.
Are you sure your serial adapter works at the same voltage level as your board? It sounds like an electrical/hardware problem instead of fault of U-Boot code. > > As a result, when connecting a more powerful power supply, the output to > > the terminal works, but the input does not work from the word at all. > > When connecting a less powerful power supply, the input works partially: > > there was an inscription like "press any key to interrupt startup", I > > pressed Enter and everything worked, but when I tried to enter something, > > either question marks (�) were entered, or nothing was entered, or even the > > text was erased. > > > > When installing EDK2-RK3588 (UEFI) instead of U-Boot, both input and output > > worked on any power supply, and everything worked fine, the speed was the > > same — 1500,000 baud, and the same adapter. > > > > It is necessary to install U-Boot. Can you tell me how to fix the input in > > U-Boot? Version v2025.01. > - 0 ' Thanks, Yao Zi
