arm64: mvebu: armada37xx: add pinctrl definition

Start to populate the device tree of the Armada 37xx with the pincontrol
configuration used on the board providing a dts.

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Konstantin Porotchkin <kostap@marvell.com>
Cc: Nadav Haklai <nadavh@marvell.com>

arch/arm/dts/armada-3720-db.dts

@@ -81,11 +81,15 @@
 };
 
 &eth0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&rgmii_pins>;
 	status = "okay";
 	phy-mode = "rgmii";
 };
 
 &i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
 	status = "okay";
 };
 
@@ -117,6 +121,8 @@
 
 &spi0 {
 	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi_quad_pins>;
 
 	spi-flash@0 {
 		#address-cells = <1>;
@@ -130,6 +136,8 @@
 
 /* Exported on the micro USB connector CON32 through an FTDI */
 &uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart1_pins>;
 	status = "okay";
 };
 

arch/arm/dts/armada-37xx.dtsi

@@ -129,6 +129,31 @@
 					<GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
 
 				};
+
+				spi_quad_pins: spi-quad-pins {
+					groups = "spi_quad";
+					function = "spi";
+				};
+
+				i2c1_pins: i2c1-pins {
+					groups = "i2c1";
+					function = "i2c";
+				};
+
+				i2c2_pins: i2c2-pins {
+					groups = "i2c2";
+					function = "i2c";
+				};
+
+				uart1_pins: uart1-pins {
+					groups = "uart1";
+					function = "uart";
+				};
+
+				uart2_pins: uart2-pins {
+					groups = "uart2";
+					function = "uart";
+				};
 			};
 
 			pinctrl_sb: pinctrl-sb@18800 {
@@ -146,6 +171,12 @@
 					<GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>,
 					<GIC_SPI 156 IRQ_TYPE_LEVEL_HIGH>;
 				};
+
+				rgmii_pins: mii-pins {
+					groups = "rgmii";
+					function = "mii";
+				};
+
 			};
 
 			usb3: usb@58000 {