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Wed, 2 Sep 2026 04:37:52 -0400 (EDT) Date: Wed, 2 Sep 2026 10:37:50 +0200 From: Niklas =?utf-8?Q?S=C3=B6derlund?= To: Tomi Valkeinen Cc: Ceclan Dumitru , dumitru.ceclan@analog.com, Tomi Valkeinen , Mauro Carvalho Chehab , Sakari Ailus , Laurent Pinchart , Julien Massot , Rob Herring , Greg Kroah-Hartman , linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-staging@lists.linux.dev, linux-gpio@vger.kernel.org, Martin Hecht , Andrian Suciu , Cosmin Tanislav , Vivekananda Dayananda , Cory Keitz Subject: Re: [PATCH v16 00/22] media: i2c: add Maxim GMSL2/3 serializer and deserializer drivers Message-ID: <20260902083750.GC1116206@ragnatech.se> References: <20260831-gmsl2-3_serdes-v16-0-4fa6e08bb514@analog.com> <20260831170303.GB1116206@ragnatech.se> <65b703e7-e4a0-4046-9d35-7d0ff1057f96@gmail.com> <16626ec7-d1ec-4a54-ad1b-a59790cd33e8@ideasonboard.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <16626ec7-d1ec-4a54-ad1b-a59790cd33e8@ideasonboard.com> On 2026-09-01 10:43:44 +0300, Tomi Valkeinen wrote: > Hi, > > On 01/09/2026 10:39, Ceclan Dumitru wrote: > > > > > > On 8/31/26 8:03 PM, Niklas Söderlund wrote: > > > Hello, > > > > > > Thanks for your continued effort pushing this work forward! > > > > > > On 2026-08-31 16:21:19 +0300, Dumitru Ceclan via B4 Relay wrote: > > > > This series adds new drivers for multiple Maxim GMSL2 and GMSL3 devices, > > > > replacing the few GMSL2 drivers already in upstream, and introducing a > > > > common framework that can be used to implement such GMSL chips, which > > > > avoids code duplication while also adding support for previously > > > > unsupported features. > > > > > > > > While the normally acceptable and polite way would be to extend the > > > > current mainline drivers, the choice was made here to add a totally new > > > > set of drivers. The current drivers support only a small subset of the > > > > possible features, and only a few devices, so the end result after > > > > extending them would in any case be essentially fully rewritten, new > > > > drivers. > > > > > > > > This series depends on support for internal pads, for which a patch has > > > > been added. > > > > > > It also depends on enabling the streams API right? At least I need to do > > > so to be able to use the TPG. Out of curiosity do you know the plan to > > > enable it by default upstream? > > > > > > > I do not know when default enable is planned, but series could make it > > so VIDEO_MAXIM_SERDES selection causes v4l2_subdev_enable_streams_api=1. > > I am not sure that such a hack would be acceptable by Sakari or > > upstream in general. > I haven't tested with this driver, but in theory these kind of drivers > should work with the Streams API still disabled. The Streams API is a uAPI, > so the driver itself works without it. If the default routing for the > drivers provides a sensible single route, one can use the drivers with a > single camera. This is what the FPD-Link drivers do (although it's been a > long time since I verified it with Streams API disabled). Indeed, but to enable the TPG I need to non-default routing ;-) Nothing big I'm just impatient for the streams API to be enabled by default in general. > > Tomi > -- Kind Regards, Niklas Söderlund