Only a select few chips have this option, so you'll absolutely want to just buy a 2.0 module if possible. Most CPUs with fTPM and PTT will be running 2.0 these days regardless. This requires your motherboard to have the ability to switch to UEFI.
If you're on a Dell system, you might want to check their support article which details which PCs can have their TPM upgraded via firmware. This is mostly systems between 2015 and 2018, but 2019 onwards all ship with 2.0.