Ocelot has an i2c controller, add it. There is only one possible pinmux
configuration so add it as well.

Signed-off-by: Alexandre Belloni <alexandre.bell...@bootlin.com>
---
 arch/mips/boot/dts/mscc/ocelot.dtsi | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/mips/boot/dts/mscc/ocelot.dtsi 
b/arch/mips/boot/dts/mscc/ocelot.dtsi
index 4f33dbc67348..34093acebc0d 100644
--- a/arch/mips/boot/dts/mscc/ocelot.dtsi
+++ b/arch/mips/boot/dts/mscc/ocelot.dtsi
@@ -78,6 +78,19 @@
                        status = "disabled";
                };
 
+               i2c: i2c@100400 {
+                       compatible = "mscc,ocelot-i2c", "snps,designware-i2c";
+                       pinctrl-0 = <&i2c_pins>;
+                       pinctrl-names = "default";
+                       reg = <0x100400 0x100>, <0x198 0x8>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       interrupts = <8>;
+                       clocks = <&ahb_clk>;
+
+                       status = "disabled";
+               };
+
                uart2: serial@100800 {
                        pinctrl-0 = <&uart2_pins>;
                        pinctrl-names = "default";
@@ -178,6 +191,11 @@
                                pins = "GPIO_12", "GPIO_13";
                                function = "uart2";
                        };
+
+                       i2c_pins: i2c-pins {
+                               pins = "GPIO_16", "GPIO_17";
+                               function = "twi";
+                       };
                };
 
                mdio0: mdio@107009c {
-- 
2.18.0

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