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ramips: add support for netis N6
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This commit adds support for netis N6 WiFi 6 router.

Specification
-------------
- SoC       : MediaTek MT7621AT, MIPS, 880 MHz
- RAM       : 256 MiB
- Flash     : NAND 128 MiB (ESMT PSU1GA30DT)
- WLAN      : MT7905DAN + MT7975DN
  - 2.4 GHz : b/g/n/ax, 574 Mbps, MIMO 2x2
  - 5 GHz   : a/n/ac/ax, 1201 Mbps, MIMO 2x2
- Ethernet  : 10/100/1000 Mbps x5 (1x WAN, 4x LAN)
- USB       : 1x 3.0
- UART      : 3.3V, 115200n8
- Buttons   : 1x Reset
              1x WPS
- LEDs      : 1x Power (green)
              1x System (green)
              1x WAN (green)
              1x WiFi 2.4 GHz (green), controlled by phy
              1x WiFi 5 GHz (green), controlled by phy
              1x WPS (green)
              1x USB (green)
              5x ethernet leds (green), controlled by switch
- Power     : 12 VDC, 1.5 A

Installation
------------
1. Update the router using stock firmware web interface and OpenWrt
   factory.bin image.

Recovery and return to stock
----------------------------
1. Assign your PC a static IP 192.168.1.2 and connect to the router using
   the ethernet cable;
2. Power off the router;
3. Press Reset button, power on the router and wait until ethernet led
   start blinking;
4. Release the button;
5. Open http://192.168.1.1/ (N6 System Recovery Mode) in your browser;
6. Upload OpenWrt factory.bin (or stock firmware *.bin) image and proceed
   with upgrade.

MAC addresses
-------------
+---------+-------------------+
|         | MAC example       |
+---------+-------------------+
| LAN     | dc:xx:xx:49:xx:04 |
| WAN     | dc:xx:xx:49:xx:05 |
| WLAN 2g | dc:xx:xx:19:xx:06 |
| WLAN 5g | dc:xx:xx:79:xx:06 |
+---------+-------------------+
The WLAN MAC prototype was found in 'Factory', 0x4
The LAN MAC was found in 'Factory', 0x7ef20
The WAN MAC was found in 'Factory', 0x7ef26

Known issue
-----------
2.4 GHz WLAN doesn't start with mt76 driver.

Probable reason:
   Original Netis N6 EEPROM contains wrong MT_EE_WIFI_CONF value (0xd2).
   Other routers with the same WLAN hardware (e.g., Routerich AX1800)
   have MT_EE_WIFI_CONF = 0x92.

Workaround (already included in this commit):
   Extract EEPROM to a file at the first time boot and change
   MT_EE_WIFI_CONF (offset 0x190) value from 0xd2 to 0x92. See
   /etc/hotplug.d/firmware/11-mt76-caldata for details.

Signed-off-by: Mikhail Zhilkin <[email protected]>
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csharper2005 committed Sep 16, 2024
1 parent 4e204c7 commit b3988f1
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Showing 7 changed files with 293 additions and 1 deletion.
1 change: 1 addition & 0 deletions package/boot/uboot-envtools/files/ramips
Original file line number Diff line number Diff line change
Expand Up @@ -79,6 +79,7 @@ jcg,q20|\
linksys,e7350|\
netgear,eax12|\
netgear,wax202|\
netis,n6|\
zyxel,wsm20)
ubootenv_add_uci_config "/dev/mtd1" "0x0" "0x20000" "0x20000"
;;
Expand Down
227 changes: 227 additions & 0 deletions target/linux/ramips/dts/mt7621_netis_n6.dts
Original file line number Diff line number Diff line change
@@ -0,0 +1,227 @@
// SPDX-License-Identifier: GPL-2.0-or-later OR MIT

#include "mt7621.dtsi"

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/leds/common.h>

/ {
compatible = "netis,n6", "mediatek,mt7621-soc";
model = "netis N6";

aliases {
label-mac-device = &gmac0;

led-boot = &led_power_green;
led-failsafe = &led_system_green;
led-running = &led_power_green;
led-upgrade = &led_system_green;
};

chosen {
bootargs = "console=ttyS0,115200";
};

keys {
compatible = "gpio-keys";

key-0 {
label = "wps";
gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
linux,code = <KEY_WPS_BUTTON>;
debounce-interval = <60>;
};

key-1 {
label = "reset";
gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RESTART>;
debounce-interval = <60>;
};
};

leds {
compatible = "gpio-leds";

led-0 {
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_USB;
gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
trigger-sources = <&xhci_ehci_port1>;
linux,default-trigger = "usbport";
};

led-1 {
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_WPS;
gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
};

led_system_green: led-2 {
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_INDICATOR;
gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
};

led-3 {
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_WAN;
gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
};

led_power_green: led-4 {
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_POWER;
gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
};
};
};

&gmac0 {
nvmem-cells = <&macaddr_factory_7ef20 0>;
nvmem-cell-names = "mac-address";
};

&gmac1 {
status = "okay";
label = "wan";
phy-handle = <&ethphy4>;

nvmem-cells = <&macaddr_factory_7ef26 0>;
nvmem-cell-names = "mac-address";
};

&ethphy4 {
/delete-property/ interrupts;
};

&nand {
status = "okay";

mediatek,nmbm;
mediatek,bmt-remap-range = <0x000000 0x580000>;

partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;

partition@0 {
label = "u-boot";
reg = <0x0 0x80000>;
read-only;
};

partition@80000 {
label = "Config";
reg = <0x80000 0x80000>;
};

partition@100000 {
label = "Factory";
reg = <0x100000 0x80000>;
read-only;

nvmem-layout {
compatible = "fixed-layout";
#address-cells = <1>;
#size-cells = <1>;

eeprom_factory_0: eeprom@0 {
reg = <0x0 0xe00>;
};

macaddr_factory_7ef20: macaddr@7ef20 {
reg = <0x7ef20 0x6>;
};

macaddr_factory_7ef26: macaddr@7ef26 {
reg = <0x7ef26 0x6>;
};
};
};

partition@180000 {
label = "firmware";
reg = <0x180000 0x7680000>;

compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;

partition@0 {
label = "kernel";
reg = <0x0 0x400000>;
};

partition@400000 {
label = "ubi";
reg = <0x400000 0x7280000>;
};
};
};
};

&pcie {
status = "okay";
};

&pcie1 {
wifi@0,0 {
compatible = "mediatek,mt76";
reg = <0x0000 0 0 0 0>;

/*
* *** The code block below is commented out ***
* Reason: Probably, original Netis N6 EEPROM has wrong
* MT_EE_WIFI_CONF value 0xd2. As a result 2.4 GHz
* doesn't start with mt76 driver. Other routers
* with the same WLAN chips (e.g., Routerich
* AX1800) have MT_EE_WIFI_CONF = 0x92.
* Workaround: Extract EEPROM to a file at the first time
* boot and change MT_EE_WIFI_CONF (offset
* 0x190) value from 0xd2 to 0x92. See
* /etc/hotplug.d/firmware/11-mt76-caldata for
* details.
*/

/*
nvmem-cells = <&eeprom_factory_0>;
nvmem-cell-names = "eeprom";
*/

mediatek,disable-radar-background;
};
};

&state_default {
gpio {
groups = "i2c", "jtag", "wdt";
function = "gpio";
};
};

&switch0 {
ports {
port@0 {
status = "okay";
label = "lan4";
};

port@1 {
status = "okay";
label = "lan3";
};

port@2 {
status = "okay";
label = "lan2";
};

port@3 {
status = "okay";
label = "lan1";
};
};
};
33 changes: 32 additions & 1 deletion target/linux/ramips/image/mt7621.mk
Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,21 @@ define Build/append-dlink-covr-metadata
rm $@metadata.tmp
endef

define Build/append-netis-n6-metadata
( echo -ne '{ \
"up_model": "Netis-N6R", \
"supported_devices": ["mt7621-rfb-ax-nand"], \
"version": { \
"dist": "$(call json_quote,$(VERSION_DIST))", \
"version": "$(call json_quote,$(VERSION_NUMBER))", \
"revision": "$(call json_quote,$(REVISION))", \
"board": "$(call json_quote,$(BOARD))" \
} }' \
) > $@.metadata.tmp
fwtool -I $@.metadata.tmp $@
rm $@.metadata.tmp
endef

define Build/arcadyan-trx
echo -ne "hsqs" > $@.hsqs
$(eval trx_magic=$(word 1,$(1)))
Expand Down Expand Up @@ -2162,6 +2177,23 @@ define Device/netgear_wndr3700-v5
endef
TARGET_DEVICES += netgear_wndr3700-v5

define Device/netis_n6
$(Device/dsa-migration)
$(Device/nand)
IMAGE_SIZE := 121344k
DEVICE_VENDOR := netis
DEVICE_MODEL := N6
KERNEL_LOADADDR := 0x82000000
KERNEL := kernel-bin | relocate-kernel $(loadaddr-y) | lzma | \
fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb
IMAGES += factory.bin
IMAGE/factory.bin := append-kernel | pad-to $$(KERNEL_SIZE) | \
append-ubi | check-size | append-netis-n6-metadata
DEVICE_PACKAGES += kmod-mt7915-firmware kmod-usb-ledtrig-usbport \
kmod-usb3
endef
TARGET_DEVICES += netis_n6

define Device/netis_wf2881
$(Device/nand)
$(Device/uimage-lzma-loader)
Expand Down Expand Up @@ -2815,7 +2847,6 @@ define Device/wavlink_ws-wn572hp3-4g
endef
TARGET_DEVICES += wavlink_ws-wn572hp3-4g


define Device/wavlink_wl-wn573hx1
$(Device/uimage-lzma-loader)
IMAGE_SIZE := 15808k
Expand Down
3 changes: 3 additions & 0 deletions target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
Original file line number Diff line number Diff line change
Expand Up @@ -187,6 +187,9 @@ netgear,r7450)
netgear,wax202)
ucidef_set_led_netdev "internet" "Internet" "green:net" "wan"
;;
netis,n6)
ucidef_set_led_netdev "wan" "wan" "green:wan" "wan" "link tx rx"
;;
oraybox,x3a)
ucidef_set_led_netdev "wan" "wan link" "red:status" "wan"
ucidef_set_led_netdev "lan" "lan link" "green:status" "br-lan"
Expand Down
Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
#!/bin/sh

[ -e /lib/firmware/$FIRMWARE ] && exit 0

. /lib/functions/caldata.sh

board=$(board_name)

case "$FIRMWARE" in
"mediatek/mt7915_eeprom_dbdc.bin")
case "$board" in
netis,n6)
EEPROM=/lib/firmware/$FIRMWARE
head -c $((0xe00)) /dev/mtd2 > $EEPROM
printf "\x92" | \
dd of=$EEPROM seek=$((0x190)) bs=1 conv=notrunc \
2>/dev/null
;;
esac
;;
esac
Original file line number Diff line number Diff line change
Expand Up @@ -162,6 +162,14 @@ case "$board" in
[ "$PHYNBR" = "0" ] && macaddr_add $hw_mac_addr 2 > /sys${DEVPATH}/macaddress
[ "$PHYNBR" = "1" ] && macaddr_add $hw_mac_addr 3 > /sys${DEVPATH}/macaddress
;;
netis,n6)
hw_mac_addr="$(mtd_get_mac_binary Factory 0x4)"
hw_mac_addr=$(macaddr_setbit $hw_mac_addr 28)
hw_mac_2g=$(macaddr_unsetbit $hw_mac_addr 26)
hw_mac_5g=$(macaddr_setbit $hw_mac_addr 27)
[ "$PHYNBR" = "0" ] && echo -n "$hw_mac_2g" > /sys${DEVPATH}/macaddress
[ "$PHYNBR" = "1" ] && echo -n "$hw_mac_5g" > /sys${DEVPATH}/macaddress
;;
mercusys,mr70x-v1|\
tplink,archer-ax23-v1)
hw_mac_addr="$(mtd_get_mac_binary config 0x8)"
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -124,6 +124,7 @@ platform_do_upgrade() {
netgear,wac124|\
netgear,wax202|\
netgear,wax214v2|\
netis,n6|\
netis,wf2881|\
raisecom,msg1500-x-00|\
rostelecom,rt-fe-1a|\
Expand Down

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