Message-ID: <60c8e47cf87eb0320587c92dae6680b5@mail.infomaniak.com>
Date:   Mon, 23 Jan 2023 17:51:21 +0100
Subject: Re: wifi: mt76: mt7915e: mt7916 5GHz and 6GHz stopped working
From:   Florian Schmidt <florian@fls.name>
Reply-To: Florian Schmidt <florian@fls.name>
To:     Ben Greear <greearb@candelatech.com>
Cc:     "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
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References: <c7fc198f2a4ed9c1345a05c0397a9fc5@mail.infomaniak.com>
 <519290aa-3b88-2c21-7ca3-10186d9e807a@candelatech.com>
In-Reply-To: <519290aa-3b88-2c21-7ca3-10186d9e807a@candelatech.com>
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>  On 1/23/23 5:32 AM, Florian Schmidt wrote:
>=20
> >    Hi all,
> > =20
> >  Using current firmware and kernel 6.1 (or 6.2-rc4 from wireless-testin=
g), the 5 and 6GHz stopped working on MT7916  (from AsiaRF). It used to wor=
k with older firmware and kernel.
> > =20
> >  As a workaround, reverting to the older firmware seems to work. I can =
also get the 5GHz (but not the 6GHz!) to work building the driver using the=
 workaround described on this dd-wrt bug report: https://github.com/openwrt=
/mt76/issues/720
> > =20
> >  How can I be of any assist investigating and fixing this issue?
> > =20
> >  Thanks,
> >  Florian
> > =20
>  On 2023-01-23T15:43:08.000+01:00, Ben Greear <greearb@candelatech.com> w=
rote:
>
> We have a patch to hack the driver to allow one or the other with new
> firmware.  Can post a version for 5.19 kernel soon, and we'll rebase on
> something newer at some point soon.
>=20
> Looks like root cause is that the mtk firmware added restrictions and can=
not
> be made to properly calibrate on both bands without a reboot.
>=20
> Thanks,
> Ben
>=20
> --=20
> Ben Greear <greearb@candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com

Thanks Ben, that's great news. Please let me know if I can be of any assist=
 testing your patch.

Florian