Add the following rows to the Table 5-3 "Java Algorithms Supported by the SunPKCS11 Provider" of PKCS#11 Reference Guide. (Please see https://docs.oracle.com/en/java/javase/16/security/pkcs11-reference-guide1.html#GUID-D3EF9023-7DDC-435D-9186-D2FD05674777 for the relevant guide for jdk 16)

Java Algorithm PKCS#11 Mechanisms
Cipher.ChaCha20-Poly1305 CKM_CHACHA20_POLY1305
KeyGenerator.ChaCha20 CKM_CHACHA20_KEY_GEN
SecretKeyFactory.ChaCha20 CKM_CHACHA20_POLY1305