[U-Boot] bug "missing clock-frequency property" (sunxi/sun7i)

[U.Mutlu]

Hi,
I used the latest u-boot version via "git clone git://git.denx.de/u-boot.git 
u-boot/"
and built using Lamobo_R1_defconfig.
After copying the u-boot-sunxi-with-spl.bin to the boot device with these 
commands:
  dd if=/dev/zero of=/dev/mmcblk0 bs=1k count=1023 seek=1
  dd if=u-boot-sunxi-with-spl.bin of=/dev/mmcblk0 bs=1024 seek=8
  sync
and rebooting the device, the kernel writes the following errors to the logfile:

[    0.049630] /cpus/cpu at 0 missing clock-frequency property
[    0.049647] /cpus/cpu at 1 missing clock-frequency property

How to fix this?

Thx


my build script:
   ...
   make -s ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- mrproper
   make    ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- Lamobo_R1_defconfig
   make    ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf-

#
# Automatically generated file; DO NOT EDIT.
# U-Boot 2019.04-rc4 Configuration
...
CONFIG_SYS_ARCH="arm"
CONFIG_SYS_CPU="armv7"
CONFIG_SYS_SOC="sunxi"
CONFIG_SYS_BOARD="sunxi"
CONFIG_SYS_CONFIG_NAME="sun7i"
...
CONFIG_DEFAULT_DEVICE_TREE="sun7i-a20-lamobo-r1"
...


-- 
U.Mutlu