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AM5718: Is spread spectrum is supported for PER DLL?

Part Number: AM5718

Hi,

In AM571x and AM570x Sitara Processor Technical Reference Manual (Rev. J), section 3.12.1 Not Supported Functionality (Registers and Bits) ,registers bits for PER DLL SSC are all shaded,  so this means SSC is not supported for PER, right?

I can write value to CM_SSC_DELTAMSTEP_DPLL_PER and CM_SSC_MODFREQDIV_DPLL_PER , and the written values can be kept in these two registers.

However after writing bit 15 DPLL_SSC_EN of CM_CLKMODE_DPLL_PER to 1, and read value is 0. This also indicate PER DLL does not support SSC?

Is there any document telling which DLL supports SSC in AM5718 processor?

Thanks,

Peng,