hwclock -w produces ioctl error

[tryptophane]

First of all thanks for this busybox!

I'm on lineage os 15.1 on a Xiaomi Mi Mix 2 device. I would like to set the hardware clock using the hwclock command. However, issuing hwclock -w as root produces this error:

chiron:/ $ su chiron:/ # hwclock -w hwclock: ioctl 4024700a: Invalid argument

Same for hwclock --systohc

busybox version:1.29.2