FMC2_BWTR
ret |= regmap_read(ebi->regmap, FMC2_BWTR(cs), &ebi->bwtr[cs]);
regmap_write(ebi->regmap, FMC2_BWTR(cs), ebi->bwtr[cs]);
ret = regmap_read(ebi->regmap, FMC2_BWTR(cs), &bxtr);
*reg = FMC2_BWTR(cs);
regmap_update_bits(ebi->regmap, FMC2_BWTR(cs),
ret = regmap_read(ebi->regmap, FMC2_BWTR(cs), &bxtr);