linux-kernel - Re: [PATCH] linux-firmware: update firmware for MT7921 WiFi device

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Date:   Thu, 9 Dec 2021 15:13:40 +0100
From:   Lorenzo Bianconi <lorenzo.bianconi@...hat.com>
To:     Sven Eckelmann <sven@...fation.org>
Cc:     jwboyer@...nel.org, dwmw2@...radead.org, ben@...adent.org.uk,
        Felix Fietkau <nbd@....name>, Deren Wu <Deren.Wu@...iatek.com>,
        Mark-YW Chen <Mark-YW.Chen@...iatek.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Soul Huang <Soul.Huang@...iatek.com>,
        YN Chen <YN.Chen@...iatek.com>, KM Lin <km.lin@...iatek.com>,
        Robin Chiu <robin.chiu@...iatek.com>,
        CH Yeh <ch.yeh@...iatek.com>, Posh Sun <posh.sun@...iatek.com>,
        Eric Liang <Eric.Liang@...iatek.com>, jemele@...gle.com,
        linux-firmware <linux-firmware@...nel.org>,
        linux-wireless <linux-wireless@...r.kernel.org>,
        linux-mediatek <linux-mediatek@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        jf@...onwunderlich.de
Subject: Re: [PATCH] linux-firmware: update firmware for MT7921 WiFi device

> On Thursday, 9 December 2021 10:21:02 CET Sven Eckelmann wrote:
> > Tested-by: Sven Eckelmann <sven@...fation.org>
> 
> I would like to retract this again because it seems like the firmware is now 
> hanging all the time when the default runtime-pm/deep-sleep settings are used.
> 
>     [  521.553436] mt7921e 0000:05:00.0: Message 40000002 (seq 12) timeout
>     [  521.559884] mt7921e 0000:05:00.0: chip reset
>     [  521.661983] mt7921e 0000:05:00.0: HW/SW Version: 0x8a108a10, Build Time: 20211129210838a
>     [  521.661983] 
>     [  521.684088] mt7921e 0000:05:00.0: WM Firmware Version: ____010000, Build Time: 20211129210917
>     [  521.723561] mt7921e 0000:05:00.0: Firmware init done
> 
> This doesn't seem to happen that often when I perform a
> 
>    echo 0 > /sys/kernel/debug/ieee80211/phy0/mt76/runtime-pm
>    echo 0 > /sys/kernel/debug/ieee80211/phy0/mt76/deep-sleep
> 
> before setting up the interfaces.
> 
> But even then, on the first "ip link set up dev mon0" (not only for mon0 - 
> also for wlan0/...) it will crash with:
> 
> 
>     [  806.731357] mt7921e 0000:05:00.0: Message 00000046 (seq 4) timeout
>     [  806.737730] mt7921e 0000:05:00.0: chip reset
> RTNETLINK answers: Connection timed out
>     [  806.867666] mt7921e 0000:05:00.0: HW/SW Version: 0x8a108a10, Build Time: 20211129210838a
>     [  806.867666] 
>     [  806.888441] mt7921e 0000:05:00.0: WM Firmware Version: ____010000, Build Time: 20211129210917
>     [  806.928204] mt7921e 0000:05:00.0: Firmware init done
> 
> But when I then set up the device again then it seems to work. This is the 
> case for monitor and managed interfaces.
> 
> I've used commit 678071ef7029 ("mt76: mt7615: clear mcu error interrupt status 
> on mt7663") in mt76.git for this. 

does it occur with an older fw?

Regards,
Lorenzo

> 
> Kind regards,
> 	Sven



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