SK_DPT_TIMER_CTRL
CSR_WRITE_4(sc, SK_DPT_TIMER_CTRL, SK_DPT_TCTL_STOP);
SK_IF_WRITE_4(sc_if, 0, SK_DPT_TIMER_CTRL, SK_DPT_TCTL_START);
SK_IF_WRITE_4(sc_if, 0, SK_DPT_TIMER_CTRL, SK_DPT_TCTL_STOP);