[openwrt/openwrt] ramips: add support for SIM SIMAX1800U

LEDE Commits lede-commits at lists.infradead.org
Thu Aug 7 08:42:54 PDT 2025 

hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/1199a7aad67a820b961720dafc658a2d8b6a2386

commit 1199a7aad67a820b961720dafc658a2d8b6a2386
Author: Shiji Yang <yangshiji66 at outlook.com>
AuthorDate: Wed Jul 16 22:30:26 2025 +0800

    ramips: add support for SIM SIMAX1800U
    
    SIM SIMAX1800U has the similar hardware design as the SIMAX1800T. The
    only difference is the Ethernet portmap.
    
    Specification
    -------------
    - SoC       : Mediatek MT7621
    - RAM       : 256 MiB DDR3
    - Flash     : 128 MiB NAND Flash
    - WLAN      : Mediatek MT7905 DBDC
      - 2.4 GHz : 2x2 MIMO WiFi6
      - 5 GHz   : 2x2 MIMO WiFi6
    - Ethernet  : MT7621 built-in 10/100/1000 Mbps 1x WAN; 3x LAN
    - UART      : 3.3V, 115200n8
    - Buttons   : 1x RESET; 1x WPS/MESH
    - LEDs      : 1x Multi-Color(Blue;Green;Red)
    - Power     : DC 12V1A
    - CMIIT ID  : 2022AP7163
    - TFTP IP   :
      - server  : 192.168.1.254
      - router  : 192.168.1.28
    
    TFTP Installation(recommend)
    ------------
    1. Set local tftp server IP "192.168.1.254" and NetMask "255.255.255.0".
    2. Rename initramfs-kernel.bin to "factory.bin" and put it in the root
       directory of the tftp server. tftpd64 is a good choice for Windows.
    3. Remove all Ethernet cables and WiFi connections from the PC, except
       for the one connected to the SIMAX1800U. Start the TFTP server, plug
       in the power adapter and wait for the OpenWrt system to boot.
    4. Backup "firmware" partition and rename it to "firmware.bin". We need
       it to back to the stock firmware.
    5. Use "fw_printenv" command to list envs. If "firmware_select=2" is
       observed then set u-boot env variable via command:
       `fw_setenv firmware_select 1`
    6. Apply sysupgrade.bin in OpenWrt LuCI.
    
    Web UI Installation
    ------------
    1. Apply update by uploading initramfs-factory.bin to the web UI.
    2. Use "fw_printenv" command to list envs. If "firmware_select=2" is
       observed then set u-boot env variable via command:
       `fw_setenv firmware_select 1`
    3. Apply squashfs-sysupgrade.bin in OpenWrt LuCI.
    
    Return to Stock Firmware
    ----------------------------
      Restore the backup firmware partition in the installation step 4.
    
    MAC addresses
    -------------
    +---------+-------------------+
    |         | MAC example       |
    +---------+-------------------+
    | LABEL   | 98:xx:xx:xx:xx:b2 |
    | LAN     | 98:xx:xx:xx:xx:b5 |
    | WAN     | 98:xx:xx:xx:xx:b2 |
    | WLAN2G  | 98:xx:xx:xx:xx:b4 |
    | WLAN5G  | 9a:xx:xx:xx:xx:b4 |
    +---------+-------------------+
    
    Tips:
    -----------
      User can use `TFTP Installation` method to recover a brick device.
    
    Signed-off-by: Shiji Yang <yangshiji66 at outlook.com>
    Link: https://github.com/openwrt/openwrt/pull/19455
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 .../linux/ramips/dts/mt7621_haier-sim_wr1800k.dtsi |  8 -------
 .../linux/ramips/dts/mt7621_haier_har-20s2u1.dts   | 20 ++++++++++++++++
 target/linux/ramips/dts/mt7621_sim_simax1800t.dts  | 20 ++++++++++++++++
 target/linux/ramips/dts/mt7621_sim_simax1800u.dts  | 28 ++++++++++++++++++++++
 target/linux/ramips/image/mt7621.mk                |  7 ++++++
 .../mt7621/base-files/etc/board.d/02_network       |  1 +
 .../etc/hotplug.d/ieee80211/10_fix_wifi_mac        |  3 ++-
 .../mt7621/base-files/lib/upgrade/platform.sh      |  1 +
 8 files changed, 79 insertions(+), 9 deletions(-)

diff --git a/target/linux/ramips/dts/mt7621_haier-sim_wr1800k.dtsi b/target/linux/ramips/dts/mt7621_haier-sim_wr1800k.dtsi
index dd7b72707e..8bd63967c0 100644
--- a/target/linux/ramips/dts/mt7621_haier-sim_wr1800k.dtsi
+++ b/target/linux/ramips/dts/mt7621_haier-sim_wr1800k.dtsi
@@ -67,16 +67,10 @@
 &gmac1 {
 	status = "okay";
 	label = "wan";
-	phy-handle = <&ethphy4>;
-
 	nvmem-cells = <&macaddr_factory_8004 (-3)>;
 	nvmem-cell-names = "mac-address";
 };
 
-&ethphy4 {
-	/delete-property/ interrupts;
-};
-
 &nand {
 	status = "okay";
 
@@ -166,7 +160,6 @@
 	ports {
 		port at 1 {
 			status = "okay";
-			label = "lan3";
 		};
 
 		port at 2 {
@@ -176,7 +169,6 @@
 
 		port at 3 {
 			status = "okay";
-			label = "lan1";
 		};
 	};
 };
diff --git a/target/linux/ramips/dts/mt7621_haier_har-20s2u1.dts b/target/linux/ramips/dts/mt7621_haier_har-20s2u1.dts
index dede7dbb20..8c1b23f8eb 100644
--- a/target/linux/ramips/dts/mt7621_haier_har-20s2u1.dts
+++ b/target/linux/ramips/dts/mt7621_haier_har-20s2u1.dts
@@ -6,3 +6,23 @@
 	compatible = "haier,har-20s2u1", "mediatek,mt7621-soc";
 	model = "Haier HAR-20S2U1";
 };
+
+&ethphy4 {
+	/delete-property/ interrupts;
+};
+
+&gmac1 {
+	phy-handle = <&ethphy4>;
+};
+
+&switch0 {
+	ports {
+		port at 1 {
+			label = "lan3";
+		};
+
+		port at 3 {
+			label = "lan1";
+		};
+	};
+};
diff --git a/target/linux/ramips/dts/mt7621_sim_simax1800t.dts b/target/linux/ramips/dts/mt7621_sim_simax1800t.dts
index 3c5c9179d2..b75af605bb 100644
--- a/target/linux/ramips/dts/mt7621_sim_simax1800t.dts
+++ b/target/linux/ramips/dts/mt7621_sim_simax1800t.dts
@@ -6,3 +6,23 @@
 	compatible = "sim,simax1800t", "mediatek,mt7621-soc";
 	model = "SIM SIMAX1800T";
 };
+
+&ethphy4 {
+	/delete-property/ interrupts;
+};
+
+&gmac1 {
+	phy-handle = <&ethphy4>;
+};
+
+&switch0 {
+	ports {
+		port at 1 {
+			label = "lan3";
+		};
+
+		port at 3 {
+			label = "lan1";
+		};
+	};
+};
diff --git a/target/linux/ramips/dts/mt7621_sim_simax1800u.dts b/target/linux/ramips/dts/mt7621_sim_simax1800u.dts
new file mode 100644
index 0000000000..70fff673f5
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_sim_simax1800u.dts
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621_haier-sim_wr1800k.dtsi"
+
+/ {
+	compatible = "sim,simax1800u", "mediatek,mt7621-soc";
+	model = "SIM SIMAX1800U";
+};
+
+&ethphy0 {
+	/delete-property/ interrupts;
+};
+
+&gmac1 {
+	phy-handle = <&ethphy0>;
+};
+
+&switch0 {
+	ports {
+		port at 1 {
+			label = "lan1";
+		};
+
+		port at 3 {
+			label = "lan3";
+		};
+	};
+};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 2549f353e9..578c293224 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -2615,6 +2615,13 @@ define Device/sim_simax1800t
 endef
 TARGET_DEVICES += sim_simax1800t
 
+define Device/sim_simax1800u
+  $(Device/haier-sim_wr1800k)
+  DEVICE_VENDOR := SIM
+  DEVICE_MODEL := SIMAX1800U
+endef
+TARGET_DEVICES += sim_simax1800u
+
 define Device/snr_snr-cpe-me1
   $(Device/dsa-migration)
   $(Device/uimage-lzma-loader)
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
index 1e194fef5f..c12c46dc10 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -22,6 +22,7 @@ ramips_setup_interfaces()
 	mercusys,mr70x-v1|\
 	netgear,wax202|\
 	sim,simax1800t|\
+	sim,simax1800u|\
 	tplink,mr600-v2-eu|\
 	xiaomi,mi-router-3-pro|\
 	xiaomi,mi-router-ac2100|\
diff --git a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
index 0c9c98399a..21ab3f16ea 100644
--- a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
+++ b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
@@ -105,7 +105,8 @@ case "$board" in
 		;;
 	haier,har-20s2u1|\
 	jcg,y2|\
-	sim,simax1800t)
+	sim,simax1800t|\
+	sim,simax1800u)
 		[ "$PHYNBR" = "1" ] && \
 			macaddr_setbit_la "$(mtd_get_mac_binary factory 0x4)" > /sys${DEVPATH}/macaddress
 		;;
diff --git a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
index 9180118f3d..a1f14f9d78 100755
--- a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
@@ -138,6 +138,7 @@ platform_do_upgrade() {
 	sercomm,na502|\
 	sercomm,na502s|\
 	sim,simax1800t|\
+	sim,simax1800u|\
 	tplink,ec330-g5u-v1|\
 	wifire,s1500-nbn|\
 	xiaomi,mi-router-3g|\

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