CC1352P: Is the 20dBm high power PA available in 2.4GHz proprietary mode?

Part Number: CC1352P


It seems the high power PA in CC1352P cannot be enabled in all operation mode. In SmartRF Studio 7, 2.4GHz band, the PA can only be enabled in 802.15.4 mode. It cannot be enabled in proprietary 2.4GHz mode. Why?

Thank you!