Symbol: SIFIVE_RX_FIFO_DEPTH
drivers/tty/serial/sifive.c
128
#if (SIFIVE_TX_FIFO_DEPTH != SIFIVE_RX_FIFO_DEPTH)
drivers/tty/serial/sifive.c
411
for (c = SIFIVE_RX_FIFO_DEPTH; c > 0; --c) {