after having saved the env baudrate lower than 1500000 to a boot device, it is not possible to switch back to the default when the saved env is loaded.
DDR version 1.06 20170424
In
LPDDR3
786MHz
Bus Width=32 Col=11 Bank=8 Row=15/15 CS=2 Die Bus-Width=32 Size=4096MB
ddrconfig:7
OUT
U-Boot SPL 2017.09-ga0a2b48 (Mar 03 2018 - 18:27:44)
setup_ddr_param 1
booted from SPI flash
Trying to boot from SPI
NOTICE: BL31: v1.3(release):f947c7e
NOTICE: BL31: Built : 18:27:43, Mar 3 2018
NOTICE: BL31:Rockchip release version: v1.3
U-Boot 2017.09-ga0a2b48 (Mar 03 2018 - 18:27:59 +0000), Build: jenkins-linux-build-rock-64-191
Model: Pine64 Rock64
DRAM: 4 GiB
MMC: rksdmmc@ff520000: 0, rksdmmc@ff500000: 1
Out: serial@ff130000
Err: serial@ff130000
Model: Pine64 Rock64
misc_init_r
cpuid=xxx
serial=xxx
## Error: Can't overwrite "serial#"
## Error inserting "serial#" variable, errno=1
Net: eth0: ethernet@ff540000
Hit any key to stop autoboot: 0
=>
=> env default -a
## Resetting to default environment
## Baudrate 1500000 bps not supported
himport_r: can't insert "baudrate=1500000" into hash table
=> env default -f -a
## Resetting to default environment
## Baudrate 1500000 bps not supported
himport_r: can't insert "baudrate=1500000" into hash table
=>
after having saved the env baudrate lower than 1500000 to a boot device, it is not possible to switch back to the default when the saved env is loaded.