O2_SD_SEL_DLL
reg_val &= ~(O2_SD_SEL_DLL | O2_SD_PHASE_MASK);
reg_val |= (O2_SD_SEL_DLL | O2_SD_FIX_PHASE);
scratch_32 &= ~(O2_SD_SEL_DLL | O2_SD_PHASE_MASK);
scratch_32 &= ~(O2_SD_SEL_DLL);