[PATCH 0/4] RFC: ath79: add support for Mikrotik RB91xG

[John Crispin]

interesting. I have a rb92xx on my desk and am wondering if this would 
also work ? after a brief glance at the code I think this might work. 
the rb92xx certainly has the same latch setup ...

     John

On 06.05.21 18:19, Denis Kalashnikov wrote:
> When porting RB91xG ad hoc drivers (gpio-latch and rb91x-nand) from ar71xx
> to ath79, I made a decision to rework this to more clear design in my opinion:
> MFD driver that requests and controls the gpio lines, and separate NAND
> driver and GPIO-latch driver that uses API of the MFD driver (like
> how in rb4xx-clpd is done). ar71xx gpio-latch is very good, but somewhat hacky,
> so I don't think that it can be general driver for gpio controller on a latch.
> I could be wrong. Also it is my first attempt to port OpenWrt to a device, so
> I need a review from the community. I've tested all these on my RB912UAG-2HPnD.
> Gigabit Ethernet, 2.4GHz Wi-Fi, sysupgrade and LEDs:) are working for me.
> Not working: beeper, button and USB port/mPCIe (has not tested yet).
>
> Denis Kalashnikov (4):
>    ath79: add MFD driver (NAND and GPIO) for Mikrotik RB91xG
>    ath79: add GPIO-latch driver for Mikrotik RB91xG
>    ath79: add NAND driver for Mikrotik RB91xG
>    ath79: add support of Mikrotik RouterBoard 91xG series
>
>   .../dts/ar9342_mikrotik_routerboard-912g.dts  | 314 +++++++++++++
>   .../files/drivers/gpio/gpio-latch-rb91x.c     | 127 +++++
>   .../linux/ath79/files/drivers/mfd/rb91x-ngl.c | 331 ++++++++++++++
>   .../files/drivers/mtd/nand/raw/nand_rb91x.c   | 432 ++++++++++++++++++
>   .../linux/ath79/files/include/mfd/rb91x-ngl.h |  59 +++
>   target/linux/ath79/image/mikrotik.mk          |   9 +
>   .../base-files/etc/board.d/02_network         |   2 +
>   .../etc/hotplug.d/firmware/10-ath9k-eeprom    |   1 +
>   .../base-files/lib/upgrade/platform.sh        |   1 +
>   target/linux/ath79/mikrotik/config-default    |   3 +
>   .../patches-5.4/939-mikrotik-rb91x.patch      |  65 +++
>   11 files changed, 1344 insertions(+)
>   create mode 100644 target/linux/ath79/dts/ar9342_mikrotik_routerboard-912g.dts
>   create mode 100644 target/linux/ath79/files/drivers/gpio/gpio-latch-rb91x.c
>   create mode 100644 target/linux/ath79/files/drivers/mfd/rb91x-ngl.c
>   create mode 100644 target/linux/ath79/files/drivers/mtd/nand/raw/nand_rb91x.c
>   create mode 100644 target/linux/ath79/files/include/mfd/rb91x-ngl.h
>   create mode 100644 target/linux/ath79/patches-5.4/939-mikrotik-rb91x.patch
>