“You may configure clock rate with 64M for baud rate with 4M-
echo 64000000 > /sys/kernel/debug/bpmp/debug/clk/uartc/rate”
Thank You Kevin,
I want to express my gratitude for your suggestions, which guided us toward a solution. Additionally, I utilized the CP2102 hardware. However, when configured at 4000000Mbps, it appears to be internally capped at 1.5Mbps. This limitation seems to be due to the hardware’s specifications, as indicated in the CP2102 datasheet, which supports only up to 1.5Mbps. Unfortunately, we overlooked this detail before conducting our testing.