ramips: add support for D-Link DIR-867/DIR-882 A1

This patch adds support for D-Link DIR-867 A1 and D-Link DIR-882 A1. Given
the similarity of these devices, this patch also introduces a common DTS
shared between DIR-867 A1, DIR-878 A1 and DIR-882 A1.

Specifications:
* Board: AP-MTKH7-0002
* SoC: MediaTek MT7621AT
* RAM: 128 MB (DDR3)
* Flash: 16 MB (SPI NOR)
* WiFi: MediaTek MT7615N (x2)
* Switch: 1 WAN, 4 LAN (Gigabit)
* Ports: 1 USB 2.0, 1 USB 3.0
* Buttons: Reset, WiFi Toggle, WPS
* LEDs: Power (green/orange), Internet (green/orange), WiFi 2.4G (green),
        WiFi 5G (green), USB 2.0 (green), USB 3.0 (green)

Notes:
* WiFi 2.4G and WiFi 5G LEDs are wired directly to the wireless chips
* DIR-867 wireless chips are limited to 3x3 streams at hardware level
* USB ports and related LEDs available only on DIR-882

Serial port:
* Parameters: 57600, 8N1
* Location: J1 header (close to the Reset, WiFi and WPS buttons)
* Pinout: 1 - VCC
          2 - RXD
          3 - TXD
          4 - GND

Installation:
* D-Link Recovery GUI: power down the router, press and hold the reset
  button, then re-plug it. Keep the reset button pressed until the power
  LED starts flashing orange, manually assign a static IP address under
  the 192.168.0.xxx subnet (e.g. 192.168.0.2) and go to http://192.168.0.1

* Some modern browsers may have problems flashing via the Recovery GUI,
  if that occurs consider uploading the firmware through cURL:

    curl -v -i -F "firmware=@file.bin" 192.168.0.1

Signed-off-by: Mateus B. Cassiano <mbc07@live.com>
[move DEVICE_VARIANT to individual definitions]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 28 insertions, 9 deletions

diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index e97d2315f1..0315822c0b 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -220,6 +220,18 @@ define Device/buffalo_wsr-600dhp
 endef
 TARGET_DEVICES += buffalo_wsr-600dhp
 
+define Device/dlink_dir-8xx-a1
+  IMAGE_SIZE := 16000k
+  DEVICE_VENDOR := D-Link
+  DEVICE_PACKAGES := kmod-mt7615e kmod-mt7615-firmware wpad-basic
+  KERNEL_INITRAMFS := $$(KERNEL) | uimage-padhdr 96
+  IMAGES += factory.bin
+  IMAGE/sysupgrade.bin := append-kernel | append-rootfs | uimage-padhdr 96 |\
+	pad-rootfs | append-metadata | check-size
+  IMAGE/factory.bin := append-kernel | append-rootfs | uimage-padhdr 96 |\
+	check-size
+endef
+
 define Device/dlink_dir-860l-b1
   $(Device/seama)
   BLOCKSIZE := 64k
@@ -236,21 +248,28 @@ define Device/dlink_dir-860l-b1
 endef
 TARGET_DEVICES += dlink_dir-860l-b1
 
+define Device/dlink_dir-867-a1
+  $(Device/dlink_dir-8xx-a1)
+  DEVICE_MODEL := DIR-867
+  DEVICE_VARIANT := A1
+endef
+TARGET_DEVICES += dlink_dir-867-a1
+
 define Device/dlink_dir-878-a1
-  IMAGE_SIZE := 16000k
-  DEVICE_VENDOR := D-Link
+  $(Device/dlink_dir-8xx-a1)
   DEVICE_MODEL := DIR-878
   DEVICE_VARIANT := A1
-  DEVICE_PACKAGES := kmod-mt7615e kmod-mt7615-firmware wpad-basic
-  KERNEL_INITRAMFS := $$(KERNEL) | uimage-padhdr 96
-  IMAGES += factory.bin
-  IMAGE/sysupgrade.bin := append-kernel | append-rootfs | uimage-padhdr 96 |\
-	pad-rootfs | append-metadata | check-size
-  IMAGE/factory.bin := append-kernel | append-rootfs | uimage-padhdr 96 |\
-	check-size
 endef
 TARGET_DEVICES += dlink_dir-878-a1
 
+define Device/dlink_dir-882-a1
+  $(Device/dlink_dir-8xx-a1)
+  DEVICE_MODEL := DIR-882
+  DEVICE_VARIANT := A1
+  DEVICE_PACKAGES += kmod-usb3 kmod-usb-ledtrig-usbport
+endef
+TARGET_DEVICES += dlink_dir-882-a1
+
 define Device/d-team_newifi-d2
   $(Device/uimage-lzma-loader)
   IMAGE_SIZE := 32448k