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, 1 insertions, 142 deletions

diff --git a/target/linux/ramips/dts/mt7621_dlink_dir-878-a1.dts b/target/linux/ramips/dts/mt7621_dlink_dir-878-a1.dts
index 15c46cb5f7..e2f569f40f 100644
--- a/target/linux/ramips/dts/mt7621_dlink_dir-878-a1.dts
+++ b/target/linux/ramips/dts/mt7621_dlink_dir-878-a1.dts
@@ -1,10 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
 /dts-v1/;
 
-#include "mt7621.dtsi"
-
-#include <dt-bindings/gpio/gpio.h>
-#include <dt-bindings/input/input.h>
+#include "mt7621_dlink_dir-8xx-a1.dtsi"
 
 / {
 	compatible = "dlink,dir-878-a1", "mediatek,mt7621-soc";
@@ -15,11 +12,6 @@
 		led-failsafe = &led_power_green;
 		led-running = &led_power_green;
 		led-upgrade = &led_net_orange;
-		label-mac-device = &gmac0;
-	};
-
-	chosen {
-		bootargs = "console=ttyS0,57600";
 	};
 
 	leds {
@@ -45,137 +37,4 @@
 			gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
 		};
 	};
-
-	keys {
-		compatible = "gpio-keys";
-
-		reset {
-			label = "reset";
-			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_RESTART>;
-		};
-
-		wps {
-			label = "wps";
-			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_WPS_BUTTON>;
-		};
-
-		wifi {
-			label = "wifi";
-			gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
-			linux,code = <KEY_RFKILL>;
-		};
-	};
-};
-
-&spi0 {
-	status = "okay";
-
-	flash@0 {
-		compatible = "jedec,spi-nor";
-		reg = <0>;
-		spi-max-frequency = <50000000>;
-
-		partitions {
-			compatible = "fixed-partitions";
-			#address-cells = <1>;
-			#size-cells = <1>;
-
-			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 0x20000>;
-				read-only;
-			};
-
-			partition@60000 {
-				compatible = "sge,uimage";
-				label = "firmware";
-				reg = <0x60000 0xfa0000>;
-			};
-		};
-	};
-};
-
-&pcie {
-	status = "okay";
-};
-
-&pcie0 {
-	wifi@0,0 {
-		compatible = "mediatek,mt76";
-		reg = <0x0000 0 0 0 0>;
-		mediatek,mtd-eeprom = <&factory 0x0000>;
-		ieee80211-freq-limit = <2400000 2500000>;
-
-		led {
-			led-active-low;
-		};
-	};
-};
-
-&pcie1 {
-	wifi@0,0 {
-		compatible = "mediatek,mt76";
-		reg = <0x0000 0 0 0 0>;
-		mediatek,mtd-eeprom = <&factory 0x8000>;
-		ieee80211-freq-limit = <5000000 6000000>;
-
-		led {
-			led-active-low;
-		};
-	};
-};
-
-&gmac0 {
-	mtd-mac-address = <&factory 0xe000>;
-};
-
-&switch0 {
-	ports {
-		port@0 {
-			status = "okay";
-			label = "lan4";
-		};
-
-		port@1 {
-			status = "okay";
-			label = "lan3";
-		};
-
-		port@2 {
-			status = "okay";
-			label = "lan2";
-		};
-
-		port@3 {
-			status = "okay";
-			label = "lan1";
-		};
-
-		port@4 {
-			status = "okay";
-			label = "wan";
-			mtd-mac-address = <&factory 0xe006>;
-		};
-	};
-};
-
-&state_default {
-	gpio {
-		groups = "i2c", "uart3", "jtag", "wdt";
-		function = "gpio";
-	};
 };