serial: efm32: use $vendor,$device scheme for compatible string

Wolfram Sang pointed out that "efm32,$device" is non-standard. So use the
common scheme and prefix device with "efm32-". The old compatible string
is left in place until arch/arm/boot/dts/efm32* is fixed.

Reported-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 5 insertions, 2 deletions

diff --git a/Documentation/devicetree/bindings/serial/efm32-uart.txt b/Documentation/devicetree/bindings/serial/efm32-uart.txt
index 1984bdfbd545..3ca01336b837 100644
--- a/Documentation/devicetree/bindings/serial/efm32-uart.txt
+++ b/Documentation/devicetree/bindings/serial/efm32-uart.txt
@@ -1,7 +1,7 @@
 * Energymicro efm32 UART
 
 Required properties:
-- compatible : Should be "efm32,uart"
+- compatible : Should be "energymicro,efm32-uart"
 - reg : Address and length of the register set
 - interrupts : Should contain uart interrupt
 
@@ -13,7 +13,7 @@ Optional properties:
 Example:
 
 uart@0x4000c400 {
-        compatible = "efm32,uart";
+        compatible = "energymicro,efm32-uart";
         reg = <0x4000c400 0x400>;
         interrupts = <15>;
         efm32,location = <0>;
diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c
index 028582e924a5..c167a710dc39 100644
--- a/drivers/tty/serial/efm32-uart.c
+++ b/drivers/tty/serial/efm32-uart.c
@@ -798,6 +798,9 @@ static int efm32_uart_remove(struct platform_device *pdev)
 
 static const struct of_device_id efm32_uart_dt_ids[] = {
         {
+                .compatible = "energymicro,efm32-uart",
+        }, {
+                /* doesn't follow the "vendor,device" scheme, don't use */
                 .compatible = "efm32,uart",
         }, {
                 /* sentinel */