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Mon, 23 May 2022 16:56:44 +0000 Received: from MW4PR11MB5800.namprd11.prod.outlook.com ([fe80::798f:5a98:e47f:3798]) by MW4PR11MB5800.namprd11.prod.outlook.com ([fe80::798f:5a98:e47f:3798%8]) with mapi id 15.20.5273.022; Mon, 23 May 2022 16:56:44 +0000 From: "Kolacinski, Karol" To: Jakub Kicinski CC: "davem@davemloft.net" , "pabeni@redhat.com" , "edumazet@google.com" , "netdev@vger.kernel.org" , "richardcochran@gmail.com" , "G, GurucharanX" , "Nguyen, Anthony L" Subject: Re: [PATCH net-next 3/3] ice: add write functionality for GNSS TTY Thread-Topic: [PATCH net-next 3/3] ice: add write functionality for GNSS TTY Thread-Index: AQHYajQ/+5Nk/nCT4Euu3FZzl2q0S60lpXKAgAcRTA0= Date: Mon, 23 May 2022 16:56:44 +0000 Message-ID: References: <20220517211935.1949447-1-anthony.l.nguyen@intel.com> <20220517211935.1949447-4-anthony.l.nguyen@intel.com> <20220518215723.28383e8e@kernel.org> In-Reply-To: <20220518215723.28383e8e@kernel.org> Accept-Language: pl-PL, en-US Content-Language: pl-PL X-MS-Has-Attach: X-MS-TNEF-Correlator: suggested_attachment_session_id: 9caaf5ab-1751-c169-02eb-4fb205c0e295 authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; 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charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MW4PR11MB5800.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 41fd578d-f3e1-4401-02f7-08da3cdd376b X-MS-Exchange-CrossTenant-originalarrivaltime: 23 May 2022 16:56:44.1233 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: YJcMm2Hd14e3qfVv3Zij41hcW/NVXRooG8MTfV5Bm2WiVutnwNnmJx0++wFu1VDzkY8JrlrDF7UgkzKAczXmrZe0DVJJjiDMuz6/MPXE98U= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN7PR11MB2691 X-OriginatorOrg: intel.com Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Thu, 19 May 2022 06:57 +0200 Jakub Kicinski wrote:=0A= > > Create a second read-only TTY device.=0A= > =0A= > Can you say more about how the TTY devices are discovered, and why there= =0A= > are two of them? Would be great if that info was present under=0A= > Documentation/=0A= =0A= Both TTY devices are used for the same GNSS module. First one is=0A= read/write and the second one is read only. They are discovered by=0A= checking ICE_E810T_P0_GNSS_PRSNT_N bit in ICE_PCA9575_P0_IN register.=0A= This means that the GNSS module is physically present on the PCB.=0A= The design with one RW and one RO TTY device was requested by=0A= customers.=0A= =0A= Thanks!=0A= Karol=