ARM: dts: sun8i: Add pin muxing option for R_UART

R_UART is available on extra pads on certain tablets, which makes it
ideal for use as a console. Here we add the pins for it.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/sun8i-a23.dtsi b/arch/arm/boot/dts/sun8i-a23.dtsi
index cbd481eff55d..32c195c49b83 100644
--- a/arch/arm/boot/dts/sun8i-a23.dtsi
+++ b/arch/arm/boot/dts/sun8i-a23.dtsi
@@ -378,6 +378,13 @@
                         #address-cells = <1>;
                         #size-cells = <0>;
                         #gpio-cells = <3>;
+
+                        r_uart_pins_a: r_uart@0 {
+                                allwinner,pins = "PL2", "PL3";
+                                allwinner,function = "s_uart";
+                                allwinner,drive = <0>;
+                                allwinner,pull = <0>;
+                        };
                 };
         };
 };