diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 3ea5408fcbeb..b031abf43a7a 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -29,6 +29,7 @@
  * and hooked into this driver.
  */
 
+
 #if defined(CONFIG_SERIAL_AMBA_PL011_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
 #define SUPPORT_SYSRQ
 #endif
@@ -117,6 +118,12 @@ struct pl011_dmarx_data {
 	struct pl011_sgbuf	sgbuf_b;
 	dma_cookie_t		cookie;
 	bool			running;
+	struct timer_list	timer;
+	unsigned int last_residue;
+	unsigned long last_jiffies;
+	bool auto_poll_rate;
+	unsigned int poll_rate;
+	unsigned int poll_timeout;
 };
 
 struct pl011_dmatx_data {
@@ -223,16 +230,18 @@ static int pl011_fifo_to_tty(struct uart_amba_port *uap)
 static int pl011_sgbuf_init(struct dma_chan *chan, struct pl011_sgbuf *sg,
 	enum dma_data_direction dir)
 {
-	sg->buf = kmalloc(PL011_DMA_BUFFER_SIZE, GFP_KERNEL);
+	dma_addr_t dma_addr;
+
+	sg->buf = dma_alloc_coherent(chan->device->dev,
+		PL011_DMA_BUFFER_SIZE, &dma_addr, GFP_KERNEL);
 	if (!sg->buf)
 		return -ENOMEM;
 
-	sg_init_one(&sg->sg, sg->buf, PL011_DMA_BUFFER_SIZE);
+	sg_init_table(&sg->sg, 1);
+	sg_set_page(&sg->sg, phys_to_page(dma_addr),
+		PL011_DMA_BUFFER_SIZE, offset_in_page(dma_addr));
+	sg_dma_address(&sg->sg) = dma_addr;
 
-	if (dma_map_sg(chan->device->dev, &sg->sg, 1, dir) != 1) {
-		kfree(sg->buf);
-		return -EINVAL;
-	}
 	return 0;
 }
 
@@ -240,8 +249,9 @@ static void pl011_sgbuf_free(struct dma_chan *chan, struct pl011_sgbuf *sg,
 	enum dma_data_direction dir)
 {
 	if (sg->buf) {
-		dma_unmap_sg(chan->device->dev, &sg->sg, 1, dir);
-		kfree(sg->buf);
+		dma_free_coherent(chan->device->dev,
+			PL011_DMA_BUFFER_SIZE, sg->buf,
+			sg_dma_address(&sg->sg));
 	}
 }
 
@@ -300,6 +310,29 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap)
 		dmaengine_slave_config(chan, &rx_conf);
 		uap->dmarx.chan = chan;
 
+		if (plat->dma_rx_poll_enable) {
+			/* Set poll rate if specified. */
+			if (plat->dma_rx_poll_rate) {
+				uap->dmarx.auto_poll_rate = false;
+				uap->dmarx.poll_rate = plat->dma_rx_poll_rate;
+			} else {
+				/*
+				 * 100 ms defaults to poll rate if not
+				 * specified. This will be adjusted with
+				 * the baud rate at set_termios.
+				 */
+				uap->dmarx.auto_poll_rate = true;
+				uap->dmarx.poll_rate =  100;
+			}
+			/* 3 secs defaults poll_timeout if not specified. */
+			if (plat->dma_rx_poll_timeout)
+				uap->dmarx.poll_timeout =
+					plat->dma_rx_poll_timeout;
+			else
+				uap->dmarx.poll_timeout = 3000;
+		} else
+			uap->dmarx.auto_poll_rate = false;
+
 		dev_info(uap->port.dev, "DMA channel RX %s\n",
 			 dma_chan_name(uap->dmarx.chan));
 	}
@@ -701,24 +734,30 @@ static void pl011_dma_rx_chars(struct uart_amba_port *uap,
 	struct tty_port *port = &uap->port.state->port;
 	struct pl011_sgbuf *sgbuf = use_buf_b ?
 		&uap->dmarx.sgbuf_b : &uap->dmarx.sgbuf_a;
-	struct device *dev = uap->dmarx.chan->device->dev;
 	int dma_count = 0;
 	u32 fifotaken = 0; /* only used for vdbg() */
 
-	/* Pick everything from the DMA first */
+	struct pl011_dmarx_data *dmarx = &uap->dmarx;
+	int dmataken = 0;
+
+	if (uap->dmarx.poll_rate) {
+		/* The data can be taken by polling */
+		dmataken = sgbuf->sg.length - dmarx->last_residue;
+		/* Recalculate the pending size */
+		if (pending >= dmataken)
+			pending -= dmataken;
+	}
+
+	/* Pick the remain data from the DMA */
 	if (pending) {
-		/* Sync in buffer */
-		dma_sync_sg_for_cpu(dev, &sgbuf->sg, 1, DMA_FROM_DEVICE);
 
 		/*
 		 * First take all chars in the DMA pipe, then look in the FIFO.
 		 * Note that tty_insert_flip_buf() tries to take as many chars
 		 * as it can.
 		 */
-		dma_count = tty_insert_flip_string(port, sgbuf->buf, pending);
-
-		/* Return buffer to device */
-		dma_sync_sg_for_device(dev, &sgbuf->sg, 1, DMA_FROM_DEVICE);
+		dma_count = tty_insert_flip_string(port, sgbuf->buf + dmataken,
+				pending);
 
 		uap->port.icount.rx += dma_count;
 		if (dma_count < pending)
@@ -726,6 +765,10 @@ static void pl011_dma_rx_chars(struct uart_amba_port *uap,
 				 "couldn't insert all characters (TTY is full?)\n");
 	}
 
+	/* Reset the last_residue for Rx DMA poll */
+	if (uap->dmarx.poll_rate)
+		dmarx->last_residue = sgbuf->sg.length;
+
 	/*
 	 * Only continue with trying to read the FIFO if all DMA chars have
 	 * been taken first.
@@ -865,6 +908,57 @@ static inline void pl011_dma_rx_stop(struct uart_amba_port *uap)
 	writew(uap->dmacr, uap->port.membase + UART011_DMACR);
 }
 
+/*
+ * Timer handler for Rx DMA polling.
+ * Every polling, It checks the residue in the dma buffer and transfer
+ * data to the tty. Also, last_residue is updated for the next polling.
+ */
+static void pl011_dma_rx_poll(unsigned long args)
+{
+	struct uart_amba_port *uap = (struct uart_amba_port *)args;
+	struct tty_port *port = &uap->port.state->port;
+	struct pl011_dmarx_data *dmarx = &uap->dmarx;
+	struct dma_chan *rxchan = uap->dmarx.chan;
+	unsigned long flags = 0;
+	unsigned int dmataken = 0;
+	unsigned int size = 0;
+	struct pl011_sgbuf *sgbuf;
+	int dma_count;
+	struct dma_tx_state state;
+
+	sgbuf = dmarx->use_buf_b ? &uap->dmarx.sgbuf_b : &uap->dmarx.sgbuf_a;
+	rxchan->device->device_tx_status(rxchan, dmarx->cookie, &state);
+	if (likely(state.residue < dmarx->last_residue)) {
+		dmataken = sgbuf->sg.length - dmarx->last_residue;
+		size = dmarx->last_residue - state.residue;
+		dma_count = tty_insert_flip_string(port, sgbuf->buf + dmataken,
+				size);
+		if (dma_count == size)
+			dmarx->last_residue =  state.residue;
+		dmarx->last_jiffies = jiffies;
+	}
+	tty_flip_buffer_push(port);
+
+	/*
+	 * If no data is received in poll_timeout, the driver will fall back
+	 * to interrupt mode. We will retrigger DMA at the first interrupt.
+	 */
+	if (jiffies_to_msecs(jiffies - dmarx->last_jiffies)
+			> uap->dmarx.poll_timeout) {
+
+		spin_lock_irqsave(&uap->port.lock, flags);
+		pl011_dma_rx_stop(uap);
+		spin_unlock_irqrestore(&uap->port.lock, flags);
+
+		uap->dmarx.running = false;
+		dmaengine_terminate_all(rxchan);
+		del_timer(&uap->dmarx.timer);
+	} else {
+		mod_timer(&uap->dmarx.timer,
+			jiffies + msecs_to_jiffies(uap->dmarx.poll_rate));
+	}
+}
+
 static void pl011_dma_startup(struct uart_amba_port *uap)
 {
 	int ret;
@@ -927,6 +1021,16 @@ skip_rx:
 		if (pl011_dma_rx_trigger_dma(uap))
 			dev_dbg(uap->port.dev, "could not trigger initial "
 				"RX DMA job, fall back to interrupt mode\n");
+		if (uap->dmarx.poll_rate) {
+			init_timer(&(uap->dmarx.timer));
+			uap->dmarx.timer.function = pl011_dma_rx_poll;
+			uap->dmarx.timer.data = (unsigned long)uap;
+			mod_timer(&uap->dmarx.timer,
+				jiffies +
+				msecs_to_jiffies(uap->dmarx.poll_rate));
+			uap->dmarx.last_residue = PL011_DMA_BUFFER_SIZE;
+			uap->dmarx.last_jiffies = jiffies;
+		}
 	}
 }
 
@@ -962,6 +1066,8 @@ static void pl011_dma_shutdown(struct uart_amba_port *uap)
 		/* Clean up the RX DMA */
 		pl011_sgbuf_free(uap->dmarx.chan, &uap->dmarx.sgbuf_a, DMA_FROM_DEVICE);
 		pl011_sgbuf_free(uap->dmarx.chan, &uap->dmarx.sgbuf_b, DMA_FROM_DEVICE);
+		if (uap->dmarx.poll_rate)
+			del_timer_sync(&uap->dmarx.timer);
 		uap->using_rx_dma = false;
 	}
 }
@@ -976,7 +1082,6 @@ static inline bool pl011_dma_rx_running(struct uart_amba_port *uap)
 	return uap->using_rx_dma && uap->dmarx.running;
 }
 
-
 #else
 /* Blank functions if the DMA engine is not available */
 static inline void pl011_dma_probe(struct uart_amba_port *uap)
@@ -1088,8 +1193,18 @@ static void pl011_rx_chars(struct uart_amba_port *uap)
 			dev_dbg(uap->port.dev, "could not trigger RX DMA job "
 				"fall back to interrupt mode again\n");
 			uap->im |= UART011_RXIM;
-		} else
+		} else {
 			uap->im &= ~UART011_RXIM;
+			/* Start Rx DMA poll */
+			if (uap->dmarx.poll_rate) {
+				uap->dmarx.last_jiffies = jiffies;
+				uap->dmarx.last_residue	= PL011_DMA_BUFFER_SIZE;
+				mod_timer(&uap->dmarx.timer,
+					jiffies +
+					msecs_to_jiffies(uap->dmarx.poll_rate));
+			}
+		}
+
 		writew(uap->im, uap->port.membase + UART011_IMSC);
 	}
 	spin_lock(&uap->port.lock);
@@ -1164,7 +1279,6 @@ static irqreturn_t pl011_int(int irq, void *dev_id)
 	unsigned int dummy_read;
 
 	spin_lock_irqsave(&uap->port.lock, flags);
-
 	status = readw(uap->port.membase + UART011_MIS);
 	if (status) {
 		do {
@@ -1551,6 +1665,11 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
 	 */
 	baud = uart_get_baud_rate(port, termios, old, 0,
 				  port->uartclk / clkdiv);
+	/*
+	 * Adjust RX DMA polling rate with baud rate if not specified.
+	 */
+	if (uap->dmarx.auto_poll_rate)
+		uap->dmarx.poll_rate = DIV_ROUND_UP(10000000, baud);
 
 	if (baud > port->uartclk/16)
 		quot = DIV_ROUND_CLOSEST(port->uartclk * 8, baud);
diff --git a/include/linux/amba/serial.h b/include/linux/amba/serial.h
index f612c783170f..62d9303c2837 100644
--- a/include/linux/amba/serial.h
+++ b/include/linux/amba/serial.h
@@ -203,6 +203,9 @@ struct amba_pl011_data {
 	bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
 	void *dma_rx_param;
 	void *dma_tx_param;
+	bool dma_rx_poll_enable;
+	unsigned int dma_rx_poll_rate;
+	unsigned int dma_rx_poll_timeout;
         void (*init) (void);
 	void (*exit) (void);
 };