enc28j60: Add device tree compatible string and an overlay

raspberrypi · Mar 7, 2015 · 3276502 · 3276502
1 parent 4c8a8d6
commit 3276502
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Showing 3 changed files with 41 additions and 0 deletions.
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
@@ -66,6 +66,7 @@ dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b-plus.dtb
 dtb-$(CONFIG_BCM2709_DT) += bcm2709-rpi-2-b.dtb
 dtb-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor-overlay.dtb
 dtb-$(RPI_DT_OVERLAYS) += ds1307-rtc-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += enc28j60-overlay.dtb
 dtb-$(RPI_DT_OVERLAYS) += i2c-rtc-overlay.dtb
 dtb-$(RPI_DT_OVERLAYS) += hifiberry-dac-overlay.dtb
 dtb-$(RPI_DT_OVERLAYS) += hifiberry-dacplus-overlay.dtb

diff --git a/arch/arm/boot/dts/enc28j60-overlay.dts b/arch/arm/boot/dts/enc28j60-overlay.dts
@@ -0,0 +1,29 @@
+// Overlay for the Microchip ENC28J60 Ethernet Controller
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			enc28j60@0{
+				compatible = "microchip,enc28j60";
+				reg = <0>; /* CE0 */
+				spi-max-frequency = <12000000>;
+				status = "okay";
+			};
+		};
+	};
+};
diff --git a/drivers/net/ethernet/microchip/enc28j60.c b/drivers/net/ethernet/microchip/enc28j60.c
@@ -1630,10 +1630,21 @@ static int enc28j60_remove(struct spi_device *spi)
 	return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id enc28j60_of_match[] = {
+	{ .compatible = "microchip,enc28j60", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, enc28j60_of_match);
+#endif
+
 static struct spi_driver enc28j60_driver = {
 	.driver = {
 		   .name = DRV_NAME,
 		   .owner = THIS_MODULE,
+#ifdef CONFIG_OF
+		   .of_match_table = enc28j60_of_match,
+#endif
 	 },
 	.probe = enc28j60_probe,
 	.remove = enc28j60_remove,