diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c
index 12436cceebb7f3f06600e3400d95a19198089047..6c365267e26a1f1b87491eb41cb8c43744d45cc5 100644
--- a/drivers/tty/serial/meson_uart.c
+++ b/drivers/tty/serial/meson_uart.c
@@ -144,6 +144,7 @@ static void meson_uart_start_tx(struct uart_port *port)
 {
 	struct circ_buf *xmit = &port->state->xmit;
 	unsigned int ch;
+	u32 val;
 
 	if (uart_tx_stopped(port)) {
 		meson_uart_stop_tx(port);
@@ -167,6 +168,12 @@ static void meson_uart_start_tx(struct uart_port *port)
 		port->icount.tx++;
 	}
 
+	if (!uart_circ_empty(xmit)) {
+		val = readl(port->membase + AML_UART_CONTROL);
+		val |= AML_UART_TX_INT_EN;
+		writel(val, port->membase + AML_UART_CONTROL);
+	}
+
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
 		uart_write_wakeup(port);
 }