ARM: at91/dt: introduce atmel,<chip>-dbgu

The DBGU is not a simple UART and we need to be able to distinguish it from the
other UARTs, in particular to get its address and check the chip id.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index d221179d0f1a..3aa56ae3410a 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -860,7 +860,7 @@
                         };
 
                         dbgu: serial@fffff200 {
-                                compatible = "atmel,at91sam9260-usart";
+                                compatible = "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart";
                                 reg = <0xfffff200 0x200>;
                                 interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
                                 pinctrl-names = "default";