From: Mattijs Korpershoek <mkorpershoek@kernel.org>
To: Zixun LI <admin@hifiphile.com>,
Mattijs Korpershoek <mkorpershoek@kernel.org>
Cc: Eugen Hristev <eugen.hristev@linaro.org>,
Lukasz Majewski <lukma@denx.de>, Marek Vasut <marex@denx.de>,
Tom Rini <trini@konsulko.com>,
Mihai Sain <mihai.sain@microchip.com>,
u-boot@lists.denx.de
Subject: Re: [PATCH] usb: gadget: atmel: reliably generate disconnect by disabling controller instead of toggling PULLD_DIS
Date: Mon, 16 Jun 2025 09:24:49 +0200 [thread overview]
Message-ID: <878qlsgncu.fsf@kernel.org> (raw)
In-Reply-To: <CA+GyqeYhMBW2Hpa0cr=ruA+LJiOm4ycL0mzcKfkaF8w68JVdJw@mail.gmail.com>
On Fri, Jun 13, 2025 at 16:45, Zixun LI <admin@hifiphile.com> wrote:
> On Fri, Jun 13, 2025 at 11:22 AM Mattijs Korpershoek
> <mkorpershoek@kernel.org> wrote:
>>
>>
>> Mihai, Zixun, do you have any update on case No.01589331 ?
>>
>> I'd like to pick this up and some point so please keep me informed.
>>
>> Thank you
>> Mattijs
>>
>
> Hi Mattijs,
>
> The case was reported in early May and MCHP have also observed the
> missing of detach event on host.
>
> My latest measure shows a differential signal level about +-350mV
> between DP&DM lines when
> DETACH and PULLD_DIS bits are 1, much lower than the detachment
> threshold of 625mV from
> USB 2.0 specification Table 7.3.
>
> From my view the patch can be picked, even on an unaffected family it
> won't have side effects.
> Unless one day we decide to implement SAM9RL and SAM9G45 errata then
> it needs to be retested.
Ok, I will apply it. Since it's a bit late in the release cycle, I'll
send this out for -next.
Thanks again for your contribution!
Mattijs
>
> Best Regards,
> Zixun
next prev parent reply other threads:[~2025-06-16 7:24 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-02 15:45 [PATCH] usb: gadget: atmel: reliably generate disconnect by disabling controller instead of toggling PULLD_DIS Zixun LI
2025-06-04 8:20 ` Mattijs Korpershoek
2025-06-04 9:51 ` Eugen Hristev
2025-06-04 14:10 ` Zixun LI
2025-06-13 9:22 ` Mattijs Korpershoek
2025-06-13 14:45 ` Zixun LI
2025-06-16 7:24 ` Mattijs Korpershoek [this message]
2025-06-16 7:28 ` Mattijs Korpershoek
2025-06-16 8:45 ` Zixun LI
2025-06-16 9:52 ` Mattijs Korpershoek
2025-06-16 9:57 ` Mattijs Korpershoek
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