static void tpm_emulator_register(void)
 {
     type_register_static(&tpm_emulator_info);
-    tpm_register_driver(&tpm_emulator_driver);
 }
 
 type_init(tpm_emulator_register)
 
 static void tpm_passthrough_register(void)
 {
     type_register_static(&tpm_passthrough_info);
-    tpm_register_driver(&tpm_passthrough_driver);
 }
 
 type_init(tpm_passthrough_register)
 
 static QLIST_HEAD(, TPMBackend) tpm_backends =
     QLIST_HEAD_INITIALIZER(tpm_backends);
 
-static TPMDriverOps const *be_drivers[TPM_TYPE__MAX];
 static bool tpm_models[TPM_MODEL__MAX];
 
 void tpm_register_model(enum TpmModel model)
 
 #ifdef CONFIG_TPM
 
-void tpm_register_driver(const TPMDriverOps *tdo)
-{
-    assert(!be_drivers[tdo->type]);
-
-    be_drivers[tdo->type] = tdo;
-}
-
 static const TPMDriverOps *
 tpm_driver_find_by_type(enum TpmType type)
 {