Enhancement #8896 has been added in TPAM 2.5.923; from the 2.5.923 Release Notes:
"Added ability to set minimum TLS version required for cache server communication from 1.0 through 1.2. New menu options have been added in the cache menu. Please see the TPAM Administrator Guide for details."
None; versions of the TPAM Cache prior to 2.5.923 require TLS 1.0 to function correctly.