Link Port in Griffin can run up to a maximum speed of 150MHz.
By default the Link port derives its clock from SCLK0 which can support a frequency of up to 112.5MHz.
So CDU (Clock Distribution Unit) needs to be initialized to change the clock domain for the Link Port. Link port can derive its clock from the CCLK (maximum 450MHz) and DCLK (maximum 450MHz) which can be configured using CDU.
