Merge pull request #40 from HarveyHunt/ci20-v3.18-spi-gpio

DT: Add support for spi-gpio to JZ4780's DT

bitbanging for now. There is a hardware spi module. Driver from 3.0.8 can be used as a base for forward porting by any enthusiast.

Author: ZubairLK

arch/mips/boot/dts/jz4780.dtsi

@@ -384,6 +384,25 @@
 			};
 		};
 
+		spi_gpio {
+			compatible = "spi-gpio";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			num-chipselects = <2>;
+
+			gpio-miso = <&gpe 14 0>;
+			gpio-sck = <&gpe 15 0>;
+			gpio-mosi = <&gpe 17 0>;
+			cs-gpios = <&gpe 16 0
+					&gpe 18 0>;
+
+			spidev@0 {
+				compatible = "spidev";
+				reg = <0>;
+				spi-max-frequency = <1000000>;
+			};
+		};
+
 		uart0: serial@10030000 {
 			compatible = "ingenic,jz4780-uart";
 			reg = <0x10030000 0x100>;