ARM: sun7i: DT: Add UART muxing options to the DTSI

The UARTs on the A20 can be muxed to several pins. Add a few options to
the DTSI so that we can start using them in the boards' DT.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index 980ec7522fa8..f4e4524cd4f9 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
@@ -71,6 +71,27 @@
                         #address-cells = <1>;
                         #size-cells = <0>;
                         #gpio-cells = <3>;
+
+                        uart0_pins_a: uart0@0 {
+                                allwinner,pins = "PB22", "PB23";
+                                allwinner,function = "uart0";
+                                allwinner,drive = <0>;
+                                allwinner,pull = <0>;
+                        };
+
+                        uart6_pins_a: uart6@0 {
+                                allwinner,pins = "PI12", "PI13";
+                                allwinner,function = "uart6";
+                                allwinner,drive = <0>;
+                                allwinner,pull = <0>;
+                        };
+
+                        uart7_pins_a: uart7@0 {
+                                allwinner,pins = "PI20", "PI21";
+                                allwinner,function = "uart7";
+                                allwinner,drive = <0>;
+                                allwinner,pull = <0>;
+                        };
                 };
 
                 timer@01c20c00 {