Shouldn't your employer provide you with a device or the means to work from home? Despite the ongoing crisis, your employer can't possibly force you to use your own devices. What if you had no personal laptop or desktop workstation?
As a dev and company owner, i would say its optional. Ive always like to use my own devices, most of the time. Sometimes i receive some money because of that, but it was just a bonus. I did because i wanted to.