Hi,
clocks are configured in the startup, see init.s file.
PLL0 is configured to 192MHz (40MHz XOSC reference) and PLL1 to 264MHz (48MHz PLL0 PHI1 output reference).
PIT is running from PER_CLK; as the setting used is SIU_SYSDIV[PERCLKSEL]=1 and SIU_SYSDIV[PERDIV]=0, the
PIT clock is PLL0/2 = 96MHz.
BR, Petr