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>

diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index 980ec75..f4e4524 100644 (file)
--- 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 {