Is there an adapter for an Amiga 1000 Keyboard to make it USB?

I have an Amiga 1000 keyboard with the 'phone' wire. The Amiga 1000 is long gone. I am just wondering if there is a way to make it PS/2 or USB compatible so I can use it on my Raspberry Pi? I was thinking if I could at least get it to PS/2 I could get a PS/2 to USB converter (which I have that does keyboard and mouse).

Thanks for any help.