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    ath79: add support for AVM FRITZ!WLAN Repeater 1750E · 8918c038
    David Bauer authored
    
    
    This commit adds support for the AVM Fritz!WLAN Repeater 1750E
    
    SOC:	Qualcomm QCA9556 (Scorpion) 720MHz MIPS74Kc
    RAM:    64MB Zentel A3R12E40CBF DDR2
    FLASH:  16MiB Winbond W25Q128 SPI NOR
    WLAN1:  QCA9556 2.4 GHz 802.11b/g/n 3x3
    WLAN2:  QCA9880 5 GHz 802.11 n/ac 3x3
    INPUT:  WPS button
    LED:    Power, WiFi, LAN, RSSI indicator
    Serial: Header Next to Black metal shield
            Pinout is 3.3V - RX - TX - GND (Square Pad is 3.3V)
            The Serial setting is 115200-8-N-1.
    
    Tested and working:
     - Ethernet
     - 2.4 GHz WiFi (correct MAC)
     - 5 GHz WiFi (correct MAC)
     - Installation via EVA bootloader
     - OpenWRT sysupgrade
     - Buttons
     - LEDs
    
    Installation via EVA:
    In the first seconds after Power is connected, the bootloader will
    listen for FTP connections on 192.168.178.1. Firmware can be uploaded
    like following:
    
      ftp> quote USER adam2
      ftp> quote PASS adam2
      ftp> binary
      ftp> debug
      ftp> passive
      ftp> quote MEDIA FLSH
      ftp> put openwrt-sysupgrade.bin mtd1
    
    Note that this procedure might take up to two minutes.
    You need to powercycle the Device afterwards to boot OpenWRT.
    
    Signed-off-by: default avatarDavid Bauer <mail@david-bauer.net>
    8918c038