[PATCH 3/3] ath79: add support for MikroTik RouterBOARD 912UAG-2HPnD

[Sergey Ryazanov]

On Thu, May 27, 2021 at 11:18 AM Denis Kalashnikov
<denis281089 at gmail.com> wrote:
> From: Denis Kalashnikov <denis281089 at gmail.com>
>
> This board has been supported in the ar71xx.
>
> Links:
> * https://mikrotik.com/product/RB912UAG-2HPnD
> * https://openwrt.org/toh/hwdata/mikrotik/mikrotik_rb912uag-2hpnd
>
> Hardware:
> * SoC: Atheros AR9342,
> * RAM: DDR 64MB,
> * SPI NOR: 64KB,
> * NAND: 128MB,
> * Ethernet: x1 10/100/1000 port with passive POE in,
> * Wi-Fi: 802.11 b/g/n,
> * PCIe,
> * USB: 2.0 EHCI controller, connected to mPCIe slot and a Type-A
>   port -- both can be used for LTE modem. But only one can be used.
> * LEDs: 5 general purpose LEDs (led1..led5), power LED, user LED,
>   Ethernet phy LED,
> * Button,
> * Beeper.
>
> Not working:
> * Button: it shares gpio line 15 with NAND ALE and NAND IO7,
>   and current drivers doesn't easily support this configuration,
> * Beeper: it is connected to bit 5 of a serial shift register
>   (tested with sysfs led trigger timer). But kmod-gpio-beeper
>   doesn't work -- we left this as is for now.
>
> Flashing:
> * Use the RouterBOARD Reset button to enable TFTP netboot,
> boot kernel and initramfs and then perform sysupgrade.
> * From ar71xx OpenWrt firmware run:
>   $ sysupgrade -F /tmp/<sysupgrade.bin>
> For more info see: https://openwrt.org/toh/mikrotik/common.
>
> Co-Developed-by: Koen Vandeputte <koen.vandeputte at citymesh.com>
> Signed-off-by: Denis Kalashnikov <denis281089 at gmail.com>

Reviewed-by: Sergey Ryazanov <ryazanov.s.a at gmail.com>