arm: mvebu: define and use common Armada XP UART2/3 pinctrl settings

This patch defines common Armada XP pinctrl settings for uart2 and
uart3 interfaces (uart0 and uart1 rx/tx do not rely on MPP):

 uart2: MPP42-43 as default
 uart3: MPP44-45 as default

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Link: https://lkml.kernel.org/r/fd51c080c7139a67ec01df8d797f1e88ce557796.1416613429.git.arno@natisbad.org
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi
index b59a83cf2f26..7cefb9b6d27c 100644
--- a/arch/arm/boot/dts/armada-xp.dtsi
+++ b/arch/arm/boot/dts/armada-xp.dtsi
@@ -55,6 +55,8 @@
 
                         uart2: serial@12200 {
                                 compatible = "snps,dw-apb-uart";
+                                pinctrl-0 = <&uart2_pins>;
+                                pinctrl-names = "default";
                                 reg = <0x12200 0x100>;
                                 reg-shift = <2>;
                                 interrupts = <43>;
@@ -65,6 +67,8 @@
 
                         uart3: serial@12300 {
                                 compatible = "snps,dw-apb-uart";
+                                pinctrl-0 = <&uart3_pins>;
+                                pinctrl-names = "default";
                                 reg = <0x12300 0x100>;
                                 reg-shift = <2>;
                                 interrupts = <44>;
@@ -235,4 +239,14 @@
                                "mpp33", "mpp34", "mpp35";
                 marvell,function = "sd0";
         };
+
+        uart2_pins: uart2-pins {
+                marvell,pins = "mpp42", "mpp43";
+                marvell,function = "uart2";
+        };
+
+        uart3_pins: uart3-pins {
+                marvell,pins = "mpp44", "mpp45";
+                marvell,function = "uart3";
+        };
 };