[OpenWrt-Devel] [PATCH v3] ramips: add support for Xiaomi Mi Wi-Fi Router 3G v2

[mail at adrianschmutzler.de]

Hi,

additional comments below.

> -----Original Message-----
> From: Paul Fertser [mailto:fercerpav at gmail.com]
> Sent: Mittwoch, 28. August 2019 11:09
> To: John Crispin <john at phrozen.org>
> Cc: openwrt-devel at lists.openwrt.org; Adrian Schmutzler
> <mail at adrianschmutzler.de>; Roger Pueyo Centelles
> <roger.pueyo at guifi.net>; Paul Fertser <fercerpav at gmail.com>
> Subject: [PATCH v3] ramips: add support for Xiaomi Mi Wi-Fi Router 3G v2
> 
> - 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
> 
> 
>  .../linux/ramips/base-files/etc/board.d/02_network |   7 +
>  target/linux/ramips/dts/mt7621_xiaomi_mir3g-v2.dts | 147
> +++++++++++++++++++++
>  target/linux/ramips/image/mt7621.mk                |  12 ++
>  3 files changed, 166 insertions(+)
>  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 27f85d7458..2b166dd944 100755
> --- a/target/linux/ramips/base-files/etc/board.d/02_network
> +++ b/target/linux/ramips/base-files/etc/board.d/02_network
> @@ -469,6 +469,10 @@ ramips_setup_interfaces()
>  		ucidef_add_switch "switch0" \
>  			"2:lan:2" "3:lan:1" "1:wan" "6t at eth0"
>  		;;
> +	xiaomi,mir3g-v2)
> +		ucidef_add_switch "switch0" \
> +			"2:lan:2" "3:lan:1" "4:wan" "6t at eth0"
> +		;;

"6t at eth0" and "6 at eth0" should be the same, so this can be merged with cudy,wr1000.

>  	xiaomi,mir3p)
>  		ucidef_add_switch "switch0" \
>  			"1:lan:3" "2:lan:2" "3:lan:1" "4:wan" "6 at eth0"
> @@ -683,6 +687,9 @@ ramips_setup_macs()
>  	xiaomi,mir3p)
>  		lan_mac=$(mtd_get_mac_binary factory 0xe006)
>  		;;
> +	xiaomi,mir3g-v2)
> +		wan_mac=$(mtd_get_mac_binary factory 0xe006)
> +		;;

This can be merged with elecom,wrc-1167ghbk2-s|\ etc.

Best

Adrian
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