EIC7700_MS
rgmii0_mode &= ~EIC7700_MS;
rgmii1_mode &= ~EIC7700_MS;
rgmii0_mode |= FIELD_PREP(EIC7700_MS, EIC7700_MS_1V8);
rgmii1_mode |= FIELD_PREP(EIC7700_MS, EIC7700_MS_1V8);
rgmii0_mode |= FIELD_PREP(EIC7700_MS, EIC7700_MS_3V3);
rgmii1_mode |= FIELD_PREP(EIC7700_MS, EIC7700_MS_3V3);