diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 67894354dc2a..5a7503986d7d 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -678,7 +678,7 @@ static void msm_config_port(struct uart_port *port, int flags)
 		if (ret)
 			return;
 	}
-	if (msm_port->is_uartdm)
+	if (msm_port->gsbi_base)
 		writel_relaxed(GSBI_PROTOCOL_UART,
 				msm_port->gsbi_base + GSBI_CONTROL);
 }
@@ -868,6 +868,11 @@ static struct uart_driver msm_uart_driver = {
 
 static atomic_t msm_uart_next_id = ATOMIC_INIT(0);
 
+static const struct of_device_id msm_uartdm_table[] = {
+	{ .compatible = "qcom,msm-uartdm" },
+	{ }
+};
+
 static int __init msm_serial_probe(struct platform_device *pdev)
 {
 	struct msm_port *msm_port;
@@ -887,7 +892,7 @@ static int __init msm_serial_probe(struct platform_device *pdev)
 	port->dev = &pdev->dev;
 	msm_port = UART_TO_MSM(port);
 
-	if (platform_get_resource(pdev, IORESOURCE_MEM, 1))
+	if (of_match_device(msm_uartdm_table, &pdev->dev))
 		msm_port->is_uartdm = 1;
 	else
 		msm_port->is_uartdm = 0;
@@ -934,6 +939,7 @@ static int msm_serial_remove(struct platform_device *pdev)
 
 static struct of_device_id msm_match_table[] = {
 	{ .compatible = "qcom,msm-uart" },
+	{ .compatible = "qcom,msm-uartdm" },
 	{}
 };