Backlight value can't be retrieve on uboot


We have a requirement where we need to retrieve the backlight value after a reboot of the system, we have an achieved it from the kernel side (whatever brightness value the user selected will be retrieved after the reboot ,i.e if the user selected 50% we will set the same value after a reboot of the system ).in the same we need to retrieve same 50% value in uboot. so I need a way how I can send data from the kernel to uboot before turning off the device ?

Hi @Jack_v ,

Welcome to Toradex Community !

Could you please provide below information,
What is your H/W and S/W version ?
Which Display and PWM you are using ?