Initial support for MT7620

[Stanislav Galabov]

Hi all,

I went through all the Ralink/Mediatek boards I have at home and at the
office and did a quick inventory of the SoCs I have available. Here's what
I have:
- RT3050F
- RT3052F
- RT5350F
- RT3352F
- RT6855 (with a Realtek gigabit switch)
- MT7620N
- MT7620A (several flavours)
- MT7621

Here is what I don't have, but I'd like to add support for:
- RT3662
- RT3883
- MT7628 (I may get one of these in the future)
- MT7688 (I may get one of these in the future)

At the moment I am planning to add support for all of the above with the
following functionality, where applicable:
- PCI/PCIe
- USB
- Ethernet
- Switch
- SPI

I would appreciate it, if anyone has RT3662/RT3883 laying around not doing
anything, if I could get my hands on these at some point. I'll continue
looking on my end as well and see if I can obtain these around here...

Also, if anyone has RT6855 datasheet/programming guide, I'd appreciate a
copy of that. I think I am pretty much set for the others, with the
exception of MT7688, but MT7688 is easier to figure out compared to RT6855.

I may have missed some SoCs from the above list - if so, and if someone
would like to see support for them - please let me know.

I think if we manage to do all the above, FreeBSD will have pretty good
support for Ralink/Mediatek router SoCs, especially if/once Adrian manages
to work on the WiFi parts :-)

Best wishes,
Stanislav


On Sat, Dec 19, 2015 at 8:31 AM, Stanislav Galabov <sgalabov at gmail.com>
wrote:

> Hi all,
>
> Just to give an update: MT7620 now boots to multi user with EHCI, SPI and
> basic Ethernet support (Ethernet is still a WIP, but at least can be used
> now).
> Thanks to Aleksandr Rybalko and Aleksandr Mityaev for RT5350 SPI and
> ethernet patches they provided - these helped a lot :-)
>
> For the interested, the changes are here:
>
> https://github.com/sgalabov/freebsd/tree/local/sgalabov_mt7620/sys/mips/rt305x
>
> Next is work on MT7620's PCIe support and fixing remaining issues with
> MT7620 ethernet.
>
> Best wishes,
> Stanislav
>
>
>
> On Tue, Dec 15, 2015 at 4:58 PM, Stanislav Galabov <sgalabov at gmail.com>
> wrote:
>
>> Hi all,
>>
>> After talking with Adrian off list we decided to start work on
>> Mediatek/Ralink more recent SoCs with MT7620 instead of MT7621 (Adrian’s
>> board has MT7620 so it’s easier for him to help with the WiFi parts this
>> way).
>>
>> I’ve done a bit today and I got an MT7620A based board to boot to multi
>> user with root filesystem on USB stick.
>>
>> If anyone is interested in the patch, it can be found here:
>> https://www.dropbox.com/s/e880eutzvlms8h7/mt7620_patch.diff?dl=0
>>
>> For the moment there is no support for sys/dev/rt (the Ethernet
>> controller) with MT7620. This is going to be left for later.
>> Next I am planning to work on SPI and PCI so that Adrian can start
>> working on WiFi once I’m done with the SPI part.
>>
>> I would appreciate it if someone would jump in and help with the if_rt
>> support - this way we’ll have something working quicker hopefully :-)
>>
>> I would also appreciate feedback for the attached patch...
>>
>> Best wishes,
>> Stanislav
>
>
>