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 <[email protected]>
Tested-by: Coia Prant <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/20259
Signed-off-by: Hauke Mehrtens <[email protected]>

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 (file)
index 0000000..8983203
--- /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@0 {
+               compatible = "jedec,spi-nor";
+               reg = <0>;
+               spi-max-frequency = <40000000>;
+
+               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;
+                       };
+
+                       partition@40000 {
+                               label = "factory";
+                               reg = <0x40000 0x10000>;
+                               read-only;
+
+                               nvmem-layout {
+                                       compatible = "fixed-layout";
+                                       #address-cells = <1>;
+                                       #size-cells = <1>;
+
+                                       eeprom_factory_0: eeprom@0 {
+                                               reg = <0x0 0x400>;
+                                       };
+
+                                       macaddr_factory_4: macaddr@4 {
+                                               reg = <0x4 0x6>;
+                                       };
+                               };
+                       };
+
+                       partition@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";
+       };
+};
+
+&ethernet {
+       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 2b099cfaa8c0128a0702b330974371501c5edcb7..bf56e6de2cfbb96419ba6a514e11bd601f4d4f03 100644 (file)
--- 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 759d1cf7b9fa9bae9c992053663f8b8774eaae14..dd8595ff8045b341a07998e73e61d8c5d1bb931e 100644 (file)
--- 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@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@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@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@eth0"
-               ;;
        keenetic,kn-3211)
                ucidef_add_switch "switch0" \
                        "2:lan" "6@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 3277e1c882b0676ce409cd08a20db76f048fb48c..610b8efdb0aafbae866e3b9807c7c6764815ac41 100644 (file)
--- 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"