Almost all new features of I3C v1.1 are optional.
However, it should be noted that:
- The formerly optional CCC GETHDRCAPS has been changed to GETCAPS, and its support is required for I3C v1.1 Devices, so as to indicate it is a v1.1 (or later) Device.
- Additionally, it is necessary to support the new RSTACT CCC; as a result, support for a minimal Slave Reset is required.
MIPI recommends that Slaves consider support of improvement features (such as Flow control for HDR, and Group Addressing), as well as features they likely could use for their application.