YT921X_FDB_OUT1
res = yt921x_reg_read(priv, YT921X_FDB_OUT1, &data1);
res = yt921x_reg_read(priv, YT921X_FDB_OUT1, &ctrl1);
res = yt921x_reg_read(priv, YT921X_FDB_OUT1, &val1);