[openwrt/openwrt] ramips: add support for Hongdian H8850 v20
LEDE Commits
lede-commits at lists.infradead.org
Sat Nov 29 10:25:00 PST 2025
hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/23a070dfb1fd3ed7659fad4934a6a38d8693326f
commit 23a070dfb1fd3ed7659fad4934a6a38d8693326f
Author: Coia Prant <coiaprant at gmail.com>
AuthorDate: Wed Oct 1 18:04:26 2025 +0800
ramips: add support for Hongdian H8850 v20
This is an industrial 4G router equipped with OpenWrt SNAPSHOT OEM
customized version
WARNING: The original firmware device tree is modified from evb
boards, and the device tree name is evb board. This submitted device
tree is a modified version, which deletes the non-this-device parts
and adds GPIO watchdog.
Specification:
- SoC: MediaTek MT7628DAN
- Flash: 16 MB
- RAM: 64 MB
- Power: DC 5V-36V 1.5A
- Ethernet: 1x WAN/LAN, 3x LAN (10/100 Mbps)
- Wireless radio: 802.11n 2.4g-only
- LED:
System/Power (PWR): Always Off
Modem (NET): GPIO/3 active-low
LAN: Always On
RF (Modem Signal): GPIO/2 active-low
WIFI: GPIO/44 active-low
- Button:
WPS / RESET: GPIO/11 active-low
- UART: 1x UART on PCB - 115200 8N1
- GPIO Watchdog: GPIO/0 mode=toggle timeout=1s
- Modem: 1x Built-in modem on board (Power: GPIO/4 active-high)
- SIM Slots: 1x SIM Slots
Issue:
- Factory partition not store mac address on original firmware
Flash instruction:
Using TTL:
1. Connect the board to the computer via TTL.
2. Enter original firmware failsafe mode.
3. Use wget download firmware to board /tmp
4. Use command "mtd -r write openwrt-ramips-mt76x8-hongdian_h8850-v20-squashfs-sysupgrade.bin firmware"
to flash
Original Firmware Dump / More details:
https://blog.gov.cooking/archives/research-hongdian-h8850-v20-and-flash.html
Signed-off-by: Coia Prant <coiaprant at gmail.com>
Tested-by: Coia Prant <coiaprant at gmail.com>
Link: https://github.com/openwrt/openwrt/pull/20259
Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
.../ramips/dts/mt7628an_hongdian_h8850-v20.dts | 157 +++++++++++++++++++++
target/linux/ramips/image/mt76x8.mk | 9 ++
.../mt76x8/base-files/etc/board.d/02_network | 18 +--
.../mt76x8/base-files/etc/board.d/03_gpio_switches | 3 +
4 files changed, 179 insertions(+), 8 deletions(-)
diff --git a/target/linux/ramips/dts/mt7628an_hongdian_h8850-v20.dts b/target/linux/ramips/dts/mt7628an_hongdian_h8850-v20.dts
new file mode 100644
index 0000000000..8983203e2c
--- /dev/null
+++ b/target/linux/ramips/dts/mt7628an_hongdian_h8850-v20.dts
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7628an.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+ compatible = "hongdian,h8850-v20", "mediatek,mt7628an-soc";
+ model = "Hongdian H8850 v20";
+
+ aliases {
+ led-boot = &led_net;
+ led-failsafe = &led_net;
+ led-running = &led_net;
+ led-upgrade = &led_net;
+ };
+
+ chosen {
+ bootargs = "console=ttyS0,115200";
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led-rf {
+ gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
+ color = <LED_COLOR_ID_GREEN>;
+ function = "rf";
+ };
+
+ led_net: led-net {
+ gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+ color = <LED_COLOR_ID_GREEN>;
+ function = LED_FUNCTION_MOBILE;
+ };
+
+ led-wifi {
+ gpios = <&gpio 44 GPIO_ACTIVE_LOW>;
+ color = <LED_COLOR_ID_GREEN>;
+ function = LED_FUNCTION_WLAN;
+ linux,default-trigger = "phy0tpt";
+ };
+ };
+
+ keys {
+ compatible = "gpio-keys";
+
+ reset {
+ label = "reset";
+ gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_RESTART>;
+ };
+ };
+
+ watchdog {
+ compatible = "linux,wdt-gpio";
+
+ gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
+ hw_algo = "toggle";
+ hw_margin_ms = <600>;
+ always-running;
+ };
+
+ gpio-export {
+ compatible = "gpio-export";
+
+ gpio_modem_power {
+ gpio-export,name = "modem_power";
+ gpio-export,output = <1>;
+ gpios = <&gpio 4 GPIO_ACTIVE_HIGH>;
+ };
+ };
+};
+
+&watchdog {
+ status = "disabled";
+};
+
+&spi0 {
+ status = "okay";
+
+ flash at 0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <40000000>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition at 0 {
+ label = "u-boot";
+ reg = <0x0 0x30000>;
+ read-only;
+ };
+
+ partition at 30000 {
+ label = "u-boot-env";
+ reg = <0x30000 0x10000>;
+ read-only;
+ };
+
+ partition at 40000 {
+ label = "factory";
+ reg = <0x40000 0x10000>;
+ read-only;
+
+ nvmem-layout {
+ compatible = "fixed-layout";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ eeprom_factory_0: eeprom at 0 {
+ reg = <0x0 0x400>;
+ };
+
+ macaddr_factory_4: macaddr at 4 {
+ reg = <0x4 0x6>;
+ };
+ };
+ };
+
+ partition at 50000 {
+ compatible = "denx,uimage";
+ label = "firmware";
+ reg = <0x50000 0xfb0000>;
+ };
+ };
+ };
+};
+
+&state_default {
+ gpio {
+ groups = "i2s", "i2c", "spi cs1", "gpio", "perst", "refclk", "wdt", "p4led_an", "wled_an";
+ function = "gpio";
+ };
+};
+
+ðernet {
+ nvmem-cells = <&macaddr_factory_4>;
+ nvmem-cell-names = "mac-address";
+};
+
+&esw {
+ mediatek,portmap = <0x3e>;
+ mediatek,portdisable = <0x30>;
+};
+
+&wmac {
+ status = "okay";
+
+ nvmem-cells = <&eeprom_factory_0>;
+ nvmem-cell-names = "eeprom";
+};
diff --git a/target/linux/ramips/image/mt76x8.mk b/target/linux/ramips/image/mt76x8.mk
index 2b099cfaa8..bf56e6de2c 100644
--- a/target/linux/ramips/image/mt76x8.mk
+++ b/target/linux/ramips/image/mt76x8.mk
@@ -373,6 +373,15 @@ define Device/hongdian_h7920-v40
endef
TARGET_DEVICES += hongdian_h7920-v40
+define Device/hongdian_h8850-v20
+ IMAGE_SIZE := 16064k
+ DEVICE_VENDOR := Hongdian
+ DEVICE_MODEL := H8850
+ DEVICE_VARIANT := v20
+ DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci kmod-usb-net-qmi-wwan kmod-usb-serial-option uqmi
+endef
+TARGET_DEVICES += hongdian_h8850-v20
+
define Device/iptime_a3
IMAGE_SIZE := 7936k
UIMAGE_NAME := a3
diff --git a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
index 759d1cf7b9..dd8595ff80 100644
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
@@ -121,6 +121,15 @@ ramips_setup_interfaces()
ucidef_add_switch "switch0" \
"0:lan" "1:lan" "4:wan" "6 at eth0"
;;
+ hongdian,h8850-v20|\
+ keenetic,kn-1112|\
+ keenetic,kn-1212|\
+ keenetic,kn-1613|\
+ keenetic,kn-1713|\
+ motorola,mwr03)
+ ucidef_add_switch "switch0" \
+ "1:lan" "2:lan" "3:lan" "0:wan" "6 at eth0"
+ ;;
iptime,a3|\
totolink,a3)
ucidef_add_switch "switch0" \
@@ -140,14 +149,6 @@ ramips_setup_interfaces()
ucidef_add_switch "switch0" \
"1:lan" "2:lan" "0:wan" "6 at eth0"
;;
- keenetic,kn-1112|\
- keenetic,kn-1212|\
- keenetic,kn-1613|\
- keenetic,kn-1713|\
- motorola,mwr03)
- ucidef_add_switch "switch0" \
- "1:lan" "2:lan" "3:lan" "0:wan" "6 at eth0"
- ;;
keenetic,kn-3211)
ucidef_add_switch "switch0" \
"2:lan" "6 at eth0"
@@ -286,6 +287,7 @@ ramips_setup_macs()
;;
duzun,dm06|\
hongdian,h7920-v40|\
+ hongdian,h8850-v20|\
netgear,r6020|\
netgear,r6080|\
netgear,r6120|\
diff --git a/target/linux/ramips/mt76x8/base-files/etc/board.d/03_gpio_switches b/target/linux/ramips/mt76x8/base-files/etc/board.d/03_gpio_switches
index 3277e1c882..610b8efdb0 100644
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/03_gpio_switches
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/03_gpio_switches
@@ -13,6 +13,9 @@ hongdian,h7920-v40)
ucidef_add_gpio_switch "modem_enable" "Modem power" "modem_power" "1"
ucidef_add_gpio_switch "switch_serial_mode" "Switch RS232 to RS485" "serial_rs485_mode" "0"
;;
+hongdian,h8850-v20)
+ ucidef_add_gpio_switch "modem_enable" "Modem power" "modem_power" "1"
+ ;;
teltonika,rut200|\
teltonika,rut241)
ucidef_add_gpio_switch "digital_output" "Digital output" "digital_output" "0"
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