From: Jakub Kicinski <kuba@kernel.org>
To: "Kolacinski, Karol" <karol.kolacinski@intel.com>
Cc: "davem@davemloft.net" <davem@davemloft.net>,
"pabeni@redhat.com" <pabeni@redhat.com>,
"edumazet@google.com" <edumazet@google.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"richardcochran@gmail.com" <richardcochran@gmail.com>,
"G, GurucharanX" <gurucharanx.g@intel.com>,
"Nguyen, Anthony L" <anthony.l.nguyen@intel.com>
Subject: Re: [PATCH net-next 3/3] ice: add write functionality for GNSS TTY
Date: Mon, 23 May 2022 10:58:50 -0700 [thread overview]
Message-ID: <20220523105850.606a75c1@kernel.org> (raw)
In-Reply-To: <MW4PR11MB58005F4C9EFF1DF1541A421C86D49@MW4PR11MB5800.namprd11.prod.outlook.com>
On Mon, 23 May 2022 16:56:44 +0000 Kolacinski, Karol wrote:
> On Thu, 19 May 2022 06:57 +0200 Jakub Kicinski wrote:
> > > Create a second read-only TTY device.
> >
> > Can you say more about how the TTY devices are discovered, and why there
> > are two of them? Would be great if that info was present under
> > Documentation/
>
> Both TTY devices are used for the same GNSS module. First one is
> read/write and the second one is read only. They are discovered by
> checking ICE_E810T_P0_GNSS_PRSNT_N bit in ICE_PCA9575_P0_IN register.
> This means that the GNSS module is physically present on the PCB.
> The design with one RW and one RO TTY device was requested by
> customers.
I meant discovered at the uAPI level. Imagine I plug in a shiny E810T
with a GNSS receiver into a box, the PRSNT_N bit is set and the driver
registered the ttys. How do I find the GNSS under /dev ?
next prev parent reply other threads:[~2022-05-23 18:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-17 21:19 [PATCH net-next 0/3][pull request] 100GbE Intel Wired LAN Driver Updates 2022-05-17 Tony Nguyen
2022-05-17 21:19 ` [PATCH net-next 1/3] ice: remove u16 arithmetic in ice_gnss Tony Nguyen
2022-05-17 21:19 ` [PATCH net-next 2/3] ice: add i2c write command Tony Nguyen
2022-05-19 13:40 ` Paolo Abeni
2022-05-23 17:02 ` Kolacinski, Karol
2022-05-17 21:19 ` [PATCH net-next 3/3] ice: add write functionality for GNSS TTY Tony Nguyen
2022-05-19 4:57 ` Jakub Kicinski
2022-05-23 16:56 ` Kolacinski, Karol
2022-05-23 17:58 ` Jakub Kicinski [this message]
2022-06-23 13:39 ` Kolacinski, Karol
2022-06-23 16:07 ` Jakub Kicinski
2022-05-19 13:45 ` Paolo Abeni
2022-05-23 16:58 ` Kolacinski, Karol
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