3 files changed, 8 insertions, 3 deletions

diff --git a/Documentation/devicetree/bindings/gpio/gpio-exar.txt b/Documentation/devicetree/bindings/gpio/gpio-exar.txt
new file mode 100644
index 000000000000..4540d61824af
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-exar.txt
@@ -0,0 +1,5 @@
+Exportable MPIO interface of Exar UART chips
+
+Required properties of the device:
+ - exar,first-pin: first exportable pins (0..15)
+ - ngpios: number of exportable pins (1..16)
diff --git a/drivers/gpio/gpio-exar.c b/drivers/gpio/gpio-exar.c
index fb8d304cfa17..0ecd2369c2ca 100644
--- a/drivers/gpio/gpio-exar.c
+++ b/drivers/gpio/gpio-exar.c
@@ -132,7 +132,7 @@ static int gpio_exar_probe(struct platform_device *pdev)
         if (!p)
                 return -ENOMEM;
 
-        ret = device_property_read_u32(&pdev->dev, "linux,first-pin",
+        ret = device_property_read_u32(&pdev->dev, "exar,first-pin",
                                        &first_pin);
         if (ret)
                 return ret;
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index b5c98e5bf524..c6360fbdf808 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -261,7 +261,7 @@ __xr17v35x_register_gpio(struct pci_dev *pcidev,
 }
 
 static const struct property_entry exar_gpio_properties[] = {
-        PROPERTY_ENTRY_U32("linux,first-pin", 0),
+        PROPERTY_ENTRY_U32("exar,first-pin", 0),
         PROPERTY_ENTRY_U32("ngpios", 16),
         { }
 };
@@ -326,7 +326,7 @@ static int iot2040_rs485_config(struct uart_port *port,
 }
 
 static const struct property_entry iot2040_gpio_properties[] = {
-        PROPERTY_ENTRY_U32("linux,first-pin", 10),
+        PROPERTY_ENTRY_U32("exar,first-pin", 10),
         PROPERTY_ENTRY_U32("ngpios", 1),
         { }
 };