I am currently using QT4 with TLS 1.2 support on my N900.
I am using this OpenSSL source tree https://github.com/jonwil/openssl/ with binaries at http://maemo.merlin1991.at/cssu/comm...ree/o/openssl/
I am using the tls12 branch in this source tree https://github.com/community-ssu/qt-x11-maemo for QT with binaries at http://maemo.merlin1991.at/cssu/comm...ree/q/qt4-x11/

Both currently work on my N900 when I run Fahrplan (a QT app talking to a server that only accepts TLS 1.2) so I know they are good in that context.