[openwrt/openwrt] ramips: add support for ELECOM WRC-1750GST2

[LEDE Commits]

adrian pushed a commit to openwrt/openwrt.git, branch openwrt-21.02:
https://git.openwrt.org/0444a93bdf7b64c1042aa3bf20a68c1157d99c0e

commit 0444a93bdf7b64c1042aa3bf20a68c1157d99c0e
Author: INAGAKI Hiroshi <musashino.open at gmail.com>
AuthorDate: Wed Mar 17 18:35:34 2021 +0900

    ramips: add support for ELECOM WRC-1750GST2
    
    ELECOM WRC-1750GST2 is a 2.4/5 GHz band 11ac (Wi-Fi 5) router, based on
    MT7621A.
    
    Specification:
    
    - SoC           : MediaTek MT7621A
    - RAM           : DDR3 256 MiB (NT5CC128M16JR-EK)
    - Flash         : SPI-NOR 32 MiB (MX25L25645GMI-08G)
    - WLAN          : 2.4/5 GHz 3T3R (2x MediaTek MT7615)
    - Ethernet      : 10/100/1000 Mbps x5
      - Switch      : MediaTek MT7530 (SoC)
    - LEDs/Keys     : 4x/6x (2x buttons, 1x slide-switch)
    - UART          : through-hole on PCB
      - J4: 3.3V, GND, TX, RX, from ethernet port side
      - 57600n8
    - Power         : 12 VDC, 1.5 A
    
    Flash instruction using factory image:
    
    1. Boot WRC-1750GST2 normally with "Router" mode
    2. Access to "http://192.168.2.1/" and open firmware update page
       ("ファームウェア更新")
    3. Select the OpenWrt factory image and click apply ("適用") button
    4. Wait ~120 seconds to complete flashing
    
    MAC addresses:
    
    LAN     : 04:AB:18:xx:xx:23 (Factory, 0xE000 (hex))
    WAN     : 04:AB:18:xx:xx:24 (Factory, 0xE006 (hex))
    2.4GHz  : 04:AB:18:xx:xx:25 (Factory, 0x4    (hex))
    5GHz    : 04:AB:18:xx:xx:26 (Factory, 0x8004 (hex))
    
    Signed-off-by: INAGAKI Hiroshi <musashino.open at gmail.com>
    (cherry picked from commit b3ca1f30efd7bb96a22f72b766d302e552265276)
---
 .../ramips/dts/mt7621_elecom_wrc-1750gst2.dts      | 40 ++++++++++++++++++++++
 target/linux/ramips/image/mt7621.mk                |  8 +++++
 2 files changed, 48 insertions(+)

diff --git a/target/linux/ramips/dts/mt7621_elecom_wrc-1750gst2.dts b/target/linux/ramips/dts/mt7621_elecom_wrc-1750gst2.dts
new file mode 100644
index 0000000000..4b8888cd91
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_elecom_wrc-1750gst2.dts
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621_elecom_wrc-gs-2pci.dtsi"
+
+/ {
+	compatible = "elecom,wrc-1750gst2", "mediatek,mt7621-soc";
+	model = "ELECOM WRC-1750GST2";
+};
+
+&partitions {
+	partition at 50000 {
+		compatible = "denx,uimage";
+		label = "firmware";
+		reg = <0x50000 0x1800000>;
+	};
+
+	partition at 1850000 {
+		label = "tm_pattern";
+		reg = <0x1850000 0x400000>;
+		read-only;
+	};
+
+	partition at 1c50000 {
+		label = "tm_key";
+		reg = <0x1c50000 0x100000>;
+		read-only;
+	};
+
+	partition at 1d50000 {
+		label = "nvram";
+		reg = <0x1d50000 0xb0000>;
+		read-only;
+	};
+
+	partition at 1e00000 {
+		label = "user_data";
+		reg = <0x1e00000 0x200000>;
+		read-only;
+	};
+};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 396b112b76..25ca1b87f0 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -460,6 +460,14 @@ define Device/elecom_wrc-1750gs
 endef
 TARGET_DEVICES += elecom_wrc-1750gs
 
+define Device/elecom_wrc-1750gst2
+  $(Device/elecom_wrc-gs)
+  IMAGE_SIZE := 24576k
+  DEVICE_MODEL := WRC-1750GST2
+  ELECOM_HWNAME := WRC-1750GST2
+endef
+TARGET_DEVICES += elecom_wrc-1750gst2
+
 define Device/elecom_wrc-1750gsv
   $(Device/elecom_wrc-gs)
   IMAGE_SIZE := 11264k