ramips: add support for Xiaomi Mi Router 4A (100M Edition)

- SoC:      MediaTek MT7628AN
- Flash:    16MB (Winbond W25Q128JV)
- RAM:      64MB
- Serial:   As marked on PCB, 3V3 logic, baudrate is 115200
- Ethernet: 3x 10/100 Mbps (switched, 2x LAN + WAN)
- WIFI0:    MT7628AN 2.4GHz 802.11b/g/n
- WIFI1:    MT7612EN 5GHz 802.11ac
- Antennas: 4x external (2 per radio), non-detachable
- LEDs:     Programmable power-LED (two-colored, yellow/blue)
            Non-programmable internet-LED (shows WAN-activity)
- Buttons:  Reset

INSTALLATION:

1. Connect to the serial port of the router and power it up.
   If you get a prompt asking for boot-mode, go to step 3.
2. Unplug the router after
       > Erasing SPI Flash...
       > raspi_erase: offs:20000 len:10000
   occurs on the serial port. Plug the router back in.
3. At the prompt select option 2 (Load system code then
   write to Flash via TFTP.)
4. Enter 192.168.1.1 as the device IP and 192.168.1.2 as the
   Server-IP.
5. Connect your computer to LAN1 and assign it as 192.168.1.2/24.
6. Rename the sysupgrade image to test.bin and serve it via TFTP.
7. Enter test.bin on the serial console and press enter.

Signed-off-by: Markus Scheck <markus@mscheck.de>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
[added mt76 compatible]

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 48ba1ba6a63a5ddcb8d0250dc0b372d86cde57ac..9c9f2bef9c8d1e80dcfd842d3c6e635f618a34e6 100755 (executable)
--- a/target/linux/ramips/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/base-files/etc/board.d/02_network
@@ -458,6 +458,10 @@ ramips_setup_interfaces()
                ucidef_add_switch "switch0" \
                        "1:lan:3" "2:lan:2" "3:lan:1" "4:wan" "6@eth0"
                ;;
+       xiaomi,mir4a-100m)
+               ucidef_add_switch "switch0" \
+                       "4:lan:1" "2:lan:2" "0:wan" "6@eth0"
+               ;;
        zbtlink,zbt-we1226|\
        y1)
                ucidef_add_switch "switch0" \

diff --git a/target/linux/ramips/dts/XIAOMI-MIR4A-100M.dts b/target/linux/ramips/dts/XIAOMI-MIR4A-100M.dts
new file mode 100644 (file)
index 0000000..8a33745
--- /dev/null
+++ b/target/linux/ramips/dts/XIAOMI-MIR4A-100M.dts
@@ -0,0 +1,147 @@
+//SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/dts-v1/;
+
+#include "mt7628an.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+       compatible = "xiaomi,mir4a-100m", "mediatek,mt7628an-soc";
+       model = "Xiaomi Mi Router 4A (100M Edition)";
+
+       chosen {
+               bootargs = "console=ttyS0,115200";
+       };
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x4000000>;
+       };
+
+       aliases {
+               led-boot = &power_yellow;
+               led-failsafe = &power_yellow;
+               led-running = &power_blue;
+               led-upgrade = &power_yellow;
+       };
+
+       leds {
+               compatible = "gpio-leds";
+
+               power_blue: power_blue {
+                       label = "mir4a-100m:blue:power";
+                       gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
+               };
+
+               power_yellow: power_yellow {
+                       label = "mir4a-100m:yellow:power";
+                       gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
+               };
+       };
+
+       keys {
+               compatible = "gpio-keys-polled";
+               poll-interval = <20>;
+
+               reset {
+                       label = "reset";
+                       gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_RESTART>;
+               };
+       };
+};
+
+&spi0 {
+       status = "okay";
+
+       flash@0 {
+               compatible = "jedec,spi-nor";
+               reg = <0>;
+               spi-max-frequency = <10000000>;
+
+               partitions {
+                       compatible = "fixed-partitions";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       partition@0 {
+                               label = "bootloader";
+                               reg = <0x0 0x20000>;
+                               read-only;
+                       };
+
+                       partition@20000 {
+                               label = "config";
+                               reg = <0x20000 0x10000>;
+                               read-only;
+                       };
+
+                       factory: partition@30000 {
+                               label = "factory";
+                               reg = <0x30000 0x10000>;
+                               read-only;
+                       };
+
+                       partition@40000 {
+                               label = "crash";
+                               reg = <0x40000 0x10000>;
+                               read-only;
+                       };
+
+                       partition@50000 {
+                               label = "cfg_bak";
+                               reg = <0x50000 0x10000>;
+                               read-only;
+                       };
+
+                       partition@60000 {
+                               label = "overlay";
+                               reg = <0x60000 0x100000>;
+                               read-only;
+                       };
+
+                       partition@160000 {
+                               label = "firmware";
+                               reg = <0x160000 0xea0000>;
+                               compatible = "denx,uimage";
+                       };
+               };
+       };
+};
+
+&pcie {
+       status = "okay";
+};
+
+&pcie0 {
+       wifi@0,0 {
+               compatible = "mediatek,mt76";
+               reg = <0x0000 0 0 0 0>;
+               mediatek,mtd-eeprom = <&factory 0x8000>;
+               ieee80211-freq-limit = <5000000 6000000>;
+       };
+};
+
+&pinctrl {
+       state_default: pinctrl0 {
+               gpio {
+                       ralink,group = "gpio", "wdt", "wled_an";
+                       ralink,function = "gpio";
+               };
+       };
+};
+
+&ethernet {
+       mtd-mac-address = <&factory 0x4>;
+       mtd-mac-address-increment = <(-1)>;
+};
+
+&esw {
+       mediatek,portmap = <0x2f>;
+       mediatek,portdisable = <0x2a>;
+};
+
+&wmac {
+       status = "okay";
+};

diff --git a/target/linux/ramips/image/mt76x8.mk b/target/linux/ramips/image/mt76x8.mk
index ca279a7d613e9007e91fe9b383d003567e7e39c5..4e6a5d1ca9b78175b023aafc1e1cf5082d384f38 100644 (file)
--- a/target/linux/ramips/image/mt76x8.mk
+++ b/target/linux/ramips/image/mt76x8.mk
@@ -450,6 +450,14 @@ define Device/wrtnode2r
 endef
 TARGET_DEVICES += wrtnode2r
 
+define Device/xiaomi_mir4a-100m
+  DTS := XIAOMI-MIR4A-100M
+  IMAGE_SIZE := 14976k
+  DEVICE_TITLE := Xiaomi Mi Router 4A (100M Edition)
+  DEVICE_PACKAGES := kmod-mt76x2
+endef
+TARGET_DEVICES += xiaomi_mir4a-100m
+
 define Device/zbtlink_zbt-we1226
   DTS := ZBT-WE1226
   IMAGE_SIZE := $(ralink_default_fw_size_8M)