MT_WTBL_W27_CC_BW_SEL
w27 &= ~MT_WTBL_W27_CC_BW_SEL;
w27 |= FIELD_PREP(MT_WTBL_W27_CC_BW_SEL, rd.bw);
w27 |= FIELD_PREP(MT_WTBL_W27_CC_BW_SEL, rate->bw);