[RFC v5 14/15] MIPS: ath79: add DPT-Module support

[Antony Pavlov <antonynpavlov@gmail.com>]

The following features are supported:

  * UART;
  * SPI-flash;
  * USB host;
  * GPIO keys and LEDs.

Links:

  * https://dptechnics.com/shop/index.php?route=product/product&path=59&product_id=50
  * https://dptechnics.com/shop/index.php?route=product/product&path=59&product_id=63

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Daan Pape <daan@dptechnics.com>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
---
 arch/mips/boot/dts/qca/Makefile       |  1 +
 arch/mips/boot/dts/qca/dpt_module.dts | 77 +++++++++++++++++++++++++++++++++++
 2 files changed, 78 insertions(+)

diff --git a/arch/mips/boot/dts/qca/Makefile b/arch/mips/boot/dts/qca/Makefile
index ca2ecb8..7d4bf43 100644
--- a/arch/mips/boot/dts/qca/Makefile
+++ b/arch/mips/boot/dts/qca/Makefile
@@ -1,5 +1,6 @@
 # All DTBs
 dtb-$(CONFIG_ATH79)			+= ar9132_tl_wr1043nd_v1.dtb
+dtb-$(CONFIG_ATH79)			+= dpt_module.dtb
 dtb-$(CONFIG_ATH79)			+= dragino_ms14.dtb
 dtb-$(CONFIG_ATH79)			+= omega.dtb
 dtb-$(CONFIG_ATH79)			+= tl_mr3020.dtb
diff --git a/arch/mips/boot/dts/qca/dpt_module.dts b/arch/mips/boot/dts/qca/dpt_module.dts
new file mode 100644
index 0000000..f4ccb74
--- /dev/null
+++ b/arch/mips/boot/dts/qca/dpt_module.dts
@@ -0,0 +1,77 @@
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+#include "ar9331.dtsi"
+
+/ {
+	model = "DPTechnics DPT-Module";
+	compatible = "dptechnics,dpt-module";
+
+	aliases {
+		serial0 = &uart;
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x4000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		system {
+			label = "dpt-module:green:system";
+			gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <100>;
+
+		button@0 {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&ref {
+	clock-frequency = <25000000>;
+};
+
+&uart {
+	status = "okay";
+};
+
+&gpio {
+	status = "okay";
+};
+
+&usb {
+	status = "okay";
+};
+
+&usb_phy {
+	status = "okay";
+};
+
+&spi {
+	num-chipselects = <1>;
+	status = "okay";
+
+	/* Winbond 25Q128FVSG SPI flash */
+	spiflash: w25q128@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "winbond,w25q128", "jedec,spi-nor";
+		spi-max-frequency = <104000000>;
+		reg = <0>;
+	};
+};
-- 
2.7.0