[PATCH 4/4] ARM: sun9i: optimus: Set UART0 muxing

[Maxime Ripard]

Enable the UART0 muxing, as set up by the bootloader.

Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>
---
 arch/arm/boot/dts/sun9i-a80-optimus.dts | 2 ++
 arch/arm/boot/dts/sun9i-a80.dtsi        | 7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/sun9i-a80-optimus.dts b/arch/arm/boot/dts/sun9i-a80-optimus.dts
index f83abab108b9..9ed60f3927a3 100644
--- a/arch/arm/boot/dts/sun9i-a80-optimus.dts
+++ b/arch/arm/boot/dts/sun9i-a80-optimus.dts
@@ -60,6 +60,8 @@
 
 	soc {
 		uart0: serial at 07000000 {
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart0_pins_a>;
 			status = "okay";
 		};
 	};
diff --git a/arch/arm/boot/dts/sun9i-a80.dtsi b/arch/arm/boot/dts/sun9i-a80.dtsi
index 9616dc71faf3..29fd38d9fc43 100644
--- a/arch/arm/boot/dts/sun9i-a80.dtsi
+++ b/arch/arm/boot/dts/sun9i-a80.dtsi
@@ -351,6 +351,13 @@
 			#interrupt-cells = <2>;
 			#size-cells = <0>;
 			#gpio-cells = <3>;
+
+			uart0_pins_a: uart0 at 0 {
+				allwinner,pins = "PH12", "PH13";
+				allwinner,function = "uart0";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
 		};
 
 		uart0: serial at 07000000 {
-- 
2.1.1