diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 8b23165bc5dc..aa220108cece 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -544,8 +544,8 @@ config SERIAL_S3C6400
 
 config SERIAL_S5PV210
 	tristate "Samsung S5PV210 Serial port support"
-	depends on SERIAL_SAMSUNG && (CPU_S5PV210 || CPU_S5P6442)
-	select SERIAL_SAMSUNG_UARTS_4 if CPU_S5PV210
+	depends on SERIAL_SAMSUNG && (CPU_S5PV210 || CPU_S5P6442 || CPU_S5PV310)
+	select SERIAL_SAMSUNG_UARTS_4 if (CPU_S5PV210 || CPU_S5PV310)
 	default y
 	help
 	  Serial port support for Samsung's S5P Family of SoC's
diff --git a/drivers/serial/s5pv210.c b/drivers/serial/s5pv210.c
index 4a789e5361a4..6ebccd70a707 100644
--- a/drivers/serial/s5pv210.c
+++ b/drivers/serial/s5pv210.c
@@ -28,8 +28,12 @@
 static int s5pv210_serial_setsource(struct uart_port *port,
 					struct s3c24xx_uart_clksrc *clk)
 {
+	struct s3c2410_uartcfg *cfg = port->dev->platform_data;
 	unsigned long ucon = rd_regl(port, S3C2410_UCON);
 
+	if ((cfg->clocks_size) == 1)
+		return 0;
+
 	if (strcmp(clk->name, "pclk") == 0)
 		ucon &= ~S5PV210_UCON_CLKMASK;
 	else if (strcmp(clk->name, "uclk1") == 0)
@@ -47,10 +51,14 @@ static int s5pv210_serial_setsource(struct uart_port *port,
 static int s5pv210_serial_getsource(struct uart_port *port,
 					struct s3c24xx_uart_clksrc *clk)
 {
+	struct s3c2410_uartcfg *cfg = port->dev->platform_data;
 	u32 ucon = rd_regl(port, S3C2410_UCON);
 
 	clk->divisor = 1;
 
+	if ((cfg->clocks_size) == 1)
+		return 0;
+
 	switch (ucon & S5PV210_UCON_CLKMASK) {
 	case S5PV210_UCON_PCLK:
 		clk->name = "pclk";