THRESHOLD_ADDR
ret = regmap_write(map, THRESHOLD_ADDR, priv->ctx.threshold);
[LOW_THRESH_0] = REG_FIELD(THRESHOLD_ADDR, 0, 7),
[UP_THRESH_0] = REG_FIELD(THRESHOLD_ADDR, 8, 15),
[CRIT_THRESH_1] = REG_FIELD(THRESHOLD_ADDR, 16, 23),
[CRIT_THRESH_0] = REG_FIELD(THRESHOLD_ADDR, 24, 31),
ret = regmap_read(map, THRESHOLD_ADDR, &priv->ctx.threshold);