ARM: dts: vf610-zii-cfu1: Add SFF interface to switch

The switch has an SFF attached to port 5. Add the SFF device, the
pinmux for its GPIOs, and list the port in the switch configuration.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/vf610-zii-cfu1.dts

@@ -66,6 +66,15 @@ reg_vcc_3v3_mcu: regulator-vcc-3v3-mcu {
 		 regulator-min-microvolt = <3300000>;
 		 regulator-max-microvolt = <3300000>;
 	};
+
+	sff: sfp {
+		compatible = "sff,sff";
+		pinctrl-0 = <&pinctrl_optical>;
+		pinctrl-names = "default";
+		i2c-bus = <&i2c0>;
+		los-gpio = <&gpio4 4 GPIO_ACTIVE_HIGH>;
+		tx-disable-gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
+	};
 };
 
 &adc0 {
@@ -170,6 +179,14 @@ port@2 {
 					label = "eth_cu_1000_3";
 				};
 
+				port@5 {
+					reg = <5>;
+					label = "eth_fc_1000_1";
+					phy-mode = "1000base-x";
+					managed = "in-band-status";
+					sfp = <&sff>;
+				};
+
 				port@6 {
 					reg = <6>;
 					label = "cpu";
@@ -289,6 +306,16 @@ VF610_PAD_PTE6__GPIO_111		0x31c2
 		>;
 	};
 
+	pinctrl_optical: optical-grp {
+		fsl,pins = <
+		/* SFF SD input */
+		VF610_PAD_PTE27__GPIO_132	0x3061
+
+		/* SFF Transmit disable output */
+		VF610_PAD_PTE13__GPIO_118	0x3043
+		>;
+	};
+
 	pinctrl_switch: switch-grp {
 		fsl,pins = <
 			VF610_PAD_PTB28__GPIO_98		0x3061