Symbol: IMXUART_CR1_RRDYEN
sys/dev/fdt/imxuart.c
556
SET(sc->sc_ucr1, IMXUART_CR1_EN|IMXUART_CR1_RRDYEN);
sys/dev/ic/pluart.c
628
SET(sc->sc_ucr1, IMXUART_CR1_EN|IMXUART_CR1_RRDYEN);