I see a thread from 2012 in the forums [1] about modifying some code for the TUSB9261 SATA/USB bridge to support port multipliers.
Is there a version of firmware already built that supports Port Multiplier capability? I'm trying to use the bridge with a JMicron 1-to-5 SATA port multiplier (JMB575).
[1] ref: https://e2e.ti.com/support/interface/digital_interface/f/130/t/180791?TUSB9261-Enumeration