[OpenWrt-Devel] [PATCH v4] ramips: add support for Xiaomi Mi Wi-Fi Router 3G v2
Paul Fertser
fercerpav at gmail.com
Fri Oct 25 06:18:43 EDT 2019
- CMIIT ID: 2019AP2581
- SoC: MediaTek MT7621
- Flash: 16MiB NOR SPI (GigaDevice GD25Q128B)
- RAM: 128MiB DDR3 (ESMT M15T1G1664A)
- Serial: As marked on PCB, 3V3 logic, baudrate is 115200, 8n1
- Ethernet: 3x 10/100/1000 Mbps (switched, 2xLAN + WAN)
- WIFI0: MT7603E 2.4GHz 802.11b/g/n
- WIFI1: MT7612E 5GHz 802.11ac
- Antennas: 4x external (2 per radio), non-detachable
- LEDs: Programmable "power" LED (two-coloured, yellow/blue)
Non-programmable "internet" LED (shows WAN activity)
- Buttons: Reset
INSTALLATION:
Bootloader won't accept any serial input unless "boot_wait" u-boot
environment variable is changed to "on". Vendor firmware (looks like
an illegal OpenWrt fork) won't accept any serial input unless
"uart_en" is set to "1". Tricks to force u-boot to use default
environment do not help as it's restricted in the same way.
With bootloader unlocked the easiest way would be to TFTP the
sysupgrade image or to sysupgrade after loading an initramfs one.
For porting the flash contents were changed externally with an SPI
programmer (after lifting Vcc flash IC pin away from the PCB).
Forum thread [0] indicates that this device is identical to "Xiaomi Mi
Router 4A Gigabit Edition".
[0] https://forum.openwrt.org/t/xiaomi-mi-router-4a-gigabit-edition-r4ag-r4a-gigabit-fully-supported-but-requires-overwriting-spi-flash-with-programmer/36685
Signed-off-by: Paul Fertser <fercerpav at gmail.com>
---
Changes for v2:
- Addressed all Adrian Schmutzl's comments
Changes for v3:
- Add SPDX license header
- Use new ALT variables to support R4AG model name
Changes for v4:
- Merge switch config with cudy,wr1000 (Adrian Schmutzler)
- Add label_mac (Roger Pueyo Centelles)
- Use DEVICE_ALT0_MODEL for R4A GE (Roger Pueyo Centelles)
.../ramips/base-files/etc/board.d/02_network | 7 +-
.../ramips/dts/mt7621_xiaomi_mir3g-v2.dts | 147 ++++++++++++++++++
target/linux/ramips/image/mt7621.mk | 13 ++
3 files changed, 166 insertions(+), 1 deletion(-)
create mode 100644 target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts
diff --git a/target/linux/ramips/base-files/etc/board.d/02_network b/target/linux/ramips/base-files/etc/board.d/02_network
index 3c73a63aae..480726a870 100755
--- a/target/linux/ramips/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/base-files/etc/board.d/02_network
@@ -297,7 +297,8 @@ ramips_setup_interfaces()
ucidef_add_switch "switch0" \
"4:lan" "6 at eth0"
;;
- cudy,wr1000)
+ cudy,wr1000|\
+ xiaomi,mir3g-v2)
ucidef_add_switch "switch0" \
"2:lan:2" "3:lan:1" "4:wan" "6 at eth0"
;;
@@ -720,6 +721,10 @@ ramips_setup_macs()
xiaomi,mir3g)
lan_mac=$(mtd_get_mac_binary factory 0xe006)
;;
+ xiaomi,mir3g-v2)
+ wan_mac=$(mtd_get_mac_binary factory 0xe006)
+ label_mac=$wan_mac
+ ;;
xiaomi,mir3p)
lan_mac=$(mtd_get_mac_binary factory 0xe006)
label_mac=$lan_mac
diff --git a/target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts b/target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts
new file mode 100644
index 0000000000..58da88a862
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts
@@ -0,0 +1,147 @@
+// 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>
+
+/ {
+ compatible = "xiaomi,mir3g-v2", "mediatek,mt7621-soc";
+ model = "Xiaomi Mi Router 3G v2";
+
+ aliases {
+ led-boot = &led_status_yellow;
+ led-failsafe = &led_status_yellow;
+ led-running = &led_status_blue;
+ led-upgrade = &led_status_yellow;
+ };
+
+ chosen {
+ bootargs = "console=ttyS0,115200n8";
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led_status_blue: status_blue {
+ label = "mir3gv2:blue:status";
+ gpios = <&gpio0 8 GPIO_ACTIVE_LOW>;
+ };
+
+ led_status_yellow: status_yellow {
+ label = "mir3gv2:yellow:status";
+ gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ button {
+ compatible = "gpio-keys";
+
+ reset {
+ label = "reset";
+ gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_RESTART>;
+ };
+ };
+};
+
+&spi0 {
+ status = "okay";
+
+ m25p80 at 0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <80000000>;
+
+ 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 = "Bdata";
+ reg = <0x40000 0x10000>;
+ read-only;
+ };
+
+ factory: partition at 50000 {
+ label = "factory";
+ reg = <0x50000 0x10000>;
+ read-only;
+ };
+
+ partition at 60000 {
+ label = "crash";
+ reg = <0x60000 0x10000>;
+ read-only;
+ };
+
+ partition at 70000 {
+ label = "cfg_bak";
+ reg = <0x70000 0x10000>;
+ read-only;
+ };
+
+ partition at 80000 {
+ label = "overlay";
+ reg = <0x80000 0x100000>;
+ read-only;
+ };
+
+ firmware: partition at 180000 {
+ compatible = "denx,uimage";
+ label = "firmware";
+ reg = <0x180000 0xe80000>;
+ };
+ };
+ };
+};
+
+&pcie {
+ status = "okay";
+};
+
+&pcie0 {
+ wifi at 0,0 {
+ compatible = "pci14c3,7662";
+ reg = <0x0000 0 0 0 0>;
+ mediatek,mtd-eeprom = <&factory 0x8000>;
+ ieee80211-freq-limit = <5000000 6000000>;
+ };
+};
+
+&pcie1 {
+ wifi at 0,0 {
+ compatible = "pci14c3,7603";
+ reg = <0x0000 0 0 0 0>;
+ mediatek,mtd-eeprom = <&factory 0x0000>;
+ ieee80211-freq-limit = <2400000 2500000>;
+ };
+};
+
+ðernet {
+ mtd-mac-address = <&factory 0xe000>;
+ mediatek,portmap = "lllwl";
+};
+
+&pinctrl {
+ state_default: pinctrl0 {
+ gpio {
+ ralink,group = "jtag", "uart2", "uart3", "wdt";
+ ralink,function = "gpio";
+ };
+ };
+};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 60d0131dc6..09d3b1d866 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -763,6 +763,19 @@ define Device/xiaomi_mir3g
endef
TARGET_DEVICES += xiaomi_mir3g
+define Device/xiaomi_mir3g-v2
+ MTK_SOC := mt7621
+ IMAGE_SIZE := 14848k
+ DEVICE_VENDOR := Xiaomi
+ DEVICE_MODEL := Mi Router 3G
+ DEVICE_VARIANT := v2
+ DEVICE_ALT0_VENDOR := Xiaomi
+ DEVICE_ALT0_MODEL := Mi Router 4A
+ DEVICE_ALT0_VARIANT := Gigabit Edition
+ DEVICE_PACKAGES := kmod-mt7603 kmod-mt76x2 wpad-basic
+endef
+TARGET_DEVICES += xiaomi_mir3g-v2
+
define Device/xiaomi_mir3p
MTK_SOC := mt7621
BLOCKSIZE := 128k
--
2.20.1
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