TPDA_Pn_CR_CMBSIZE
*val &= ~(TPDA_Pn_CR_DSBSIZE | TPDA_Pn_CR_CMBSIZE);
*val |= FIELD_PREP(TPDA_Pn_CR_CMBSIZE, 0x2);
*val |= FIELD_PREP(TPDA_Pn_CR_CMBSIZE, 0x1);
*val &= ~TPDA_Pn_CR_CMBSIZE;