[LEDE-DEV] [PATCH] ar71xx: add Engenius ENH200EXT support

[Daniel Golle]

Hi Paul,

On Fri, Mar 31, 2017 at 10:38:39PM +0200, Paul Oranje wrote:
> This POE access point suited for outside usage needs an external antenna.
> According FCC documentation the ENH200EXT (needs external antenna) and the ENH200 (with internal antenna) are electrically equal to the Allnet ALL0258N.
> 
> The stock image does not allow install of a LEDE factory image, but an initramfs image (lede-ar71xx-generic-enh200ext-initramfs-uImage.bin) can be loaded via u-boot recovery procedure (long press reset at power-on until all LEDS burn). The u-boot recovery procedure boots an image named vmlinux-art-ramdisk from 192.168.1.101.
> Once booted the sysupgrade image can be flashed from the booted iniramfs LEDE.
> 
> Only abnormality is that for some unknown reason the txpower cannot be set higher than 16 dBm whereas the Engenius stock firmware allows a maximum of 27 dBm.

Yes, difference is software only. ALL0258N came with OpenWrt
pre-flashed, hence we contributed the needed bits upstream. Also went
through ODM QA with OpenWrt, so EEPROM might not be identical for
ENH200 and ALL0258N (the latter was intended to run OpenWrt with ath9k
as well as Atheros SDK's proprietary driver).

> 
> Signed-off-by: Paul Oranje <por at xs4all.nl>
> ---
> package/boot/uboot-envtools/files/ar71xx           |  1 +
> target/linux/ar71xx/base-files/etc/board.d/01_leds |  3 +-
> .../linux/ar71xx/base-files/etc/board.d/02_network |  1 +
> target/linux/ar71xx/base-files/lib/ar71xx.sh       |  3 +
> .../ar71xx/base-files/lib/upgrade/platform.sh      |  6 +-
> target/linux/ar71xx/config-4.4                     |  1 +
> .../ar71xx/files/arch/mips/ath79/Kconfig.openwrt   |  9 +++
> target/linux/ar71xx/files/arch/mips/ath79/Makefile |  1 +
> .../ar71xx/files/arch/mips/ath79/mach-enh200ext.c  | 89 ++++++++++++++++++++++
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Please merge this with mach-all0258n.c so we don't have tons of
redundant code. Make them share most of the setup code, maybe
parametrisize the LEDs so you can pass a string and then just have
two MIPS_MACHINE lines at the bottom of the file. Take a look at
various mach-tl-*.c files which usually are for several similar
models each.

Cheers

Daniel