RZ_MTU3_TIORL
[RZ_MTU3_TIORL] = _tiorl, \
[RZ_MTU3_TIORL] = _tiorl, \
[RZ_MTU3_TIORL] = _tiorl \
val = rz_mtu3_8bit_ch_read(priv->mtu, RZ_MTU3_TIORL);
rz_mtu3_8bit_ch_write(priv->mtu, RZ_MTU3_TIORL, val);
rz_mtu3_8bit_ch_write(priv->mtu, RZ_MTU3_TIORL, RZ_MTU3_TIOR_OC_RETAIN);