ramips: add support for the VoCore2 Lite

The VoCore2 Lite uses the same PCB as the Vocore2.
This patch moves the common VoCore2 parts into dtsi.

Removed memory node in the device tree source file.
Memory is detected automatically.

http://vocore.io/
http://vonger.net/
http://vonger.cn/

Specifications:
- SoC: MediaTek MT7688AN
- RAM: 64MB DDR2 EtronTech EM68B16CWQH-25H
- Flash: 8MB NOR SPI Flash GigaDevice GD25Q64CWIG
- Wireless: Built into MT7688AN with onboard IPEX connector

Firmware installation:
- VoCore2-Lite ships with firmware forked from OpenWrt.
- Installation from the bootloader is recommended.
- If using luci/sysupgrade use the -n option (do not keep settings)
  original firmware uses a modified proprietary MediaTek wireless driver.
- The wireless is disabled by default in LEDE.
- If reverting to factory firmware using the bootloader is recommended.

Signed-off-by: L. D. Pinney <ldpinney@gmail.com>
Tested by: Noble Pepper <noblepepper@gmail.com>

target/linux/ramips/base-files/etc/board.d/01_leds

@@ -361,6 +361,9 @@ vocore-16M)
 vocore2)
 	set_wifi_led "$board:fuchsia:status"
 	;;
+vocore2lite)
+	set_wifi_led "$board:green:status"
+	;;
 w502u)
 	set_usb_led "$board:blue:usb"
 	set_wifi_led "rt2800pci-phy0::radio"

target/linux/ramips/base-files/etc/board.d/02_network

@@ -302,7 +302,8 @@ ramips_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"1:lan" "2:lan" "3:lan" "4:lan" "5:wan" "0@eth0"
 		;;
-	vocore2)
+	vocore2|\
+	vocore2lite)
 		ucidef_add_switch "switch0" \
 			"0:lan" "2:lan" "6t@eth0"
 		;;

target/linux/ramips/base-files/etc/diag.sh

@@ -240,6 +240,9 @@ get_status_led() {
 	vocore2)
 		status_led="$board:fuchsia:status"
 		;;
+	vocore2lite)
+		status_led="$board:green:status"
+		;;
 	w306r-v20|\
 	witi|\
 	zbt-wr8305rt)

target/linux/ramips/base-files/lib/ramips.sh

@@ -523,6 +523,9 @@ ramips_board_detect() {
 	*"VoCore2")
 		name="vocore2"
 		;;
+	*"VoCore2-Lite")
+		name="vocore2lite"
+		;;
 	*"VR500")
 		name="vr500"
 		;;

target/linux/ramips/base-files/lib/upgrade/platform.sh

@@ -149,6 +149,7 @@ platform_check_image() {
 	vocore-8M|\
 	vocore-16M|\
 	vocore2|\
+	vocore2lite|\
 	vr500|\
 	w150m|\
 	w2914nsv2|\

target/linux/ramips/dts/VOCORE2.dts

@@ -1,23 +1,13 @@
 /dts-v1/;
 
-#include "mt7628an.dtsi"
+#include "VOCORE2.dtsi"
 
 #include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
 
 / {
 	compatible = "vocore,vocore2", "mediatek,mt7628an-soc";
 	model = "VoCore2";
 
-	chosen {
-		bootargs = "console=ttyS2,115200";
-	};
-
-	memory@0 {
-		device_type = "memory";
-		reg = <0x0 0x8000000>;
-	};
-
 	gpio-leds {
 		compatible = "gpio-leds";
 
@@ -28,20 +18,6 @@
 	};
 };
 
-&pinctrl {
-	state_default: pinctrl0 {
-		gpio {
-			ralink,group = "wled_an", "perst", "wdt";
-			ralink,function = "gpio";
-		};
-	};
-};
-
-&wmac {
-	status = "okay";
-	ralink,mtd-eeprom = <&factory 0x4>;
-};
-
 &spi0 {
 	status = "okay";
 
@@ -77,28 +53,3 @@
 		};
 	};
 };
-
-&esw {
-	mediatek,portmap = <0x7>;
-	mediatek,portdisable = <0x3a>;
-};
-
-&i2s {
-	status = "okay";
-};
-
-&gdma {
-	status = "okay";
-};
-
-&pwm {
-	status = "okay";
-};
-
-&uart1 {
-	status = "okay";
-};
-
-&uart2 {
-	status = "okay";
-};

target/linux/ramips/dts/VOCORE2.dtsi

@@ -0,0 +1,49 @@
+#include "mt7628an.dtsi"
+
+/ {
+	compatible = "vocore,vocore2", "mediatek,mt7628an-soc";
+
+	chosen {
+		bootargs = "console=ttyS2,115200";
+	};
+};
+
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "wled_an", "perst", "wdt";
+			ralink,function = "gpio";
+		};
+	};
+};
+
+&wmac {
+	status = "okay";
+	ralink,mtd-eeprom = <&factory 0x4>;
+};
+
+&esw {
+	mediatek,portmap = <0x7>;
+	mediatek,portdisable = <0x3a>;
+};
+
+&i2s {
+	status = "okay";
+};
+
+&gdma {
+	status = "okay";
+};
+
+&pwm {
+	status = "okay";
+};
+
+&uart1 {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};

target/linux/ramips/dts/VOCORE2LITE.dts

@@ -0,0 +1,55 @@
+/dts-v1/;
+
+#include "VOCORE2.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	compatible = "vocore,vocore2lite", "vocore,vocore2", "mediatek,mt7628an-soc";
+	model = "VoCore2-Lite";
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		status {
+			label = "vocore2lite:green:status";
+			gpios = <&gpio1 12 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	m25p80@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <10000000>;
+		m25p,chunked-io = <32>;
+
+		partition@0 {
+			label = "u-boot";
+			reg = <0x0 0x30000>;
+			read-only;
+		};
+
+		partition@30000 {
+			label = "u-boot-env";
+			reg = <0x30000 0x10000>;
+			read-only;
+		};
+
+		factory: partition@40000 {
+			label = "factory";
+			reg = <0x40000 0x10000>;
+			read-only;
+		};
+
+		partition@50000 {
+			label = "firmware";
+			reg = <0x50000 0x7b0000>;
+		};
+	};
+};

target/linux/ramips/image/mt7688.mk

@@ -19,6 +19,14 @@ define Device/pbr-d1
 endef
 TARGET_DEVICES += pbr-d1
 
+define Device/vocore2lite
+  DTS := VOCORE2LITE
+  IMAGE_SIZE := $(ralink_default_fw_size_8M)
+  DEVICE_TITLE := VoCore VoCore2-Lite
+  DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci kmod-sdhci kmod-sdhci-mt7620
+endef
+TARGET_DEVICES += vocore2lite
+
 define Device/wrtnode2r
   DTS := WRTNODE2R
   IMAGE_SIZE := $(ralink_default_fw_size_16M)