DRV8889-Q1: ISO11452-9 test

Hi team,

Customer now meet issue with ISO11452-9 EMC test, do we get ISO11452-9 test for DRV8889-Q1? 

Their design as attached, could you help get any suggestion to improve the low frequency noise?

Now configure:

Smart tune dynamic decay mode, as they tried all the mode, this get the lowest audio noise;

VREF set current 0.8A, DAC torque set 50%;

e2e.ti.com/.../205-Goerdyna-DRV8889_2D00_Q1-Sch.zip

Thanks and Best regards,

Will