[U-Boot] help with serial on the rockchip64

[Sérgio de Almeida Lenzi]

Hello... 
I am having problem with the insane 1,500,000 bps baud rate serial2 port in  rockchip64
I manage to configure the file in configs/rock64-rk3328_defconfig
and change it from 1500000 to 115200..  The ship starts to boot in 115200 than
it writes on the serial line:
U-Boot SPL 2017.09 (Sep 24 2019 - 14:04:29)
board_init_sdmmc_pwr_en
setup_ddr_param  1
booted from SD
Trying to boot from MMC2
================================
after that it reverts to 1,500,000 bps
and writes:
================================
D:0x805 Y
In
LPDDR3
333MHz
Bus Width=32 Col=11 Bank=8 Row=15/15 CS=2 Die Bus-Width=32 Size=4096MB
ddrconfig:7
OUT
NOTICE:  BL31: v1.3(release):22b599a
NOTICE:  BL31: Built : 09:06:22, Jul 12 2019
NOTICE:  BL31:Rockchip release version: v1.3
INFO:    ARM GICv2 driver initialized
INFO:    Using opteed sec cpu_context!
INFO:    boot cpu mask: 1
INFO:    plat_rockchip_pmu_init: pd status 0xe
INFO:    BL31: Initializing runtime services
WARNING: No OPTEE provided by BL2 boot loader, Booting device without OPTEE initialization. SMC`s destined for OPTEE will return
SMC_UNK
ERROR:   Error initializing runtime service opteed_fast
INFO:    BL31: Preparing for EL3 exit to normal world
INFO:    Entry point address = 0x200000
INFO:    SPSR = 0x3c9
No serial driver found
### ERROR ### Please RESET the board ###
Where else must be done to make the chip continue in 115200 bps???

Thank for any help

Sergio