From: Grant Edwards <grant.b.edwards@gmail.com>
To: linux-serial@vger.kernel.org
Subject: Re: kernel 5.19.8: "Oxford Semiconductor Ltd OXPCIe952 Dual Native 950 UART" gets wrong baudrate (PCI ID 1415:c158)
Date: Tue, 4 Oct 2022 21:14:28 -0000 (UTC) [thread overview]
Message-ID: <thi7nk$tpq$1@ciao.gmane.io> (raw)
In-Reply-To: thi5m6$j7r$1@ciao.gmane.io
On 2022-10-04, Grant Edwards <grant.b.edwards@gmail.com> wrote:
> I just ran into what I think is the same problem when upgrading from
> 5.10.76 to 5.15.68 (sorry I don't have any intermediate kernel
> versions to test with). This is an oxford quad 950 board that has
> worked flawlessly for many years. Now the baud rates are all wrong.
>
> [...]
After reading through the thread a third time, I tried enabling
CONFIG_SERIAL_8250_16550A_VARIANTS in my 6.15.69 kernel, and my quad
Oxford board works again.
The first two times I read through the thread I misunderstood the statement
Can you please confirm that you have the
CONFIG_SERIAL_8250_16550A_VARIANTS option disabled (default to
"off" for x86 only)?
as meaning that you should disable that option as a prerequisite to
making it work. So I checked to make sure it was disabled (it
was). Yes, it's obvious now what was meant was that having it disabled
explains the previous observations.
--
Grant
next prev parent reply other threads:[~2022-10-04 21:14 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-12 19:59 kernel 5.19.8: "Oxford Semiconductor Ltd OXPCIe952 Dual Native 950 UART" gets wrong baudrate (PCI ID 1415:c158) Anders Blomdell
2022-09-13 8:21 ` Greg Kroah-Hartman
2022-09-13 12:16 ` Anders Blomdell
2022-09-13 12:30 ` Greg Kroah-Hartman
2022-09-13 12:43 ` Anders Blomdell
2022-09-13 14:01 ` Greg Kroah-Hartman
2022-09-13 15:34 ` Anders Blomdell
2022-09-13 16:19 ` Maciej W. Rozycki
2022-09-13 17:17 ` Anders Blomdell
2022-09-16 21:50 ` Maciej W. Rozycki
2022-09-13 18:59 ` Anders Blomdell
2022-09-13 21:07 ` Anders Blomdell
2022-09-14 0:00 ` Maciej W. Rozycki
2022-09-14 11:01 ` Anders Blomdell
2022-09-14 11:41 ` Maciej W. Rozycki
2022-09-14 14:15 ` Maciej W. Rozycki
2022-09-14 14:22 ` Anders Blomdell
2022-09-16 21:03 ` Maciej W. Rozycki
2022-09-19 6:50 ` Anders Blomdell
2022-09-14 14:57 ` Greg Kroah-Hartman
2022-09-15 10:09 ` Anders Blomdell
2022-09-16 21:03 ` Maciej W. Rozycki
2022-10-04 20:39 ` Grant Edwards
2022-10-04 21:14 ` Grant Edwards [this message]
2022-10-05 10:02 ` Ilpo Järvinen
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