Is there a TESTED device tree that support MULTIPLE HMC7044/HMC7043 devices (master and slave) that we can use as a reference?
Recommended for New Designs
The HMC7043 is designed to meet the requirements of multicarrier GSM and LTE base station designs, and offers a wide range of clock management and distribution...
HMC7043 on Analog.com
That setup is composed by a carrier (that contains an HMC7044) + SOM (HMC7044 + 2 x ADRV9009) + FMCOMMS8 (HMC7044 + 2 x ADRV9009) - the HMC7044 from the carrier provides the reference clock and the sync signal for the HMC7044 from the SOM and for the HMC7044 from the FMCOMMS8.