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Tue, 01 Sep 2026 00:39:55 -0700 (PDT) Message-ID: <65b703e7-e4a0-4046-9d35-7d0ff1057f96@gmail.com> Date: Tue, 1 Sep 2026 10:39:53 +0300 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v16 00/22] media: i2c: add Maxim GMSL2/3 serializer and deserializer drivers To: =?UTF-8?Q?Niklas_S=C3=B6derlund?= , dumitru.ceclan@analog.com Cc: Tomi Valkeinen , Mauro Carvalho Chehab , Sakari Ailus , Laurent Pinchart , Julien Massot , Rob Herring , Greg Kroah-Hartman , Tomi Valkeinen , 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 References: <20260831-gmsl2-3_serdes-v16-0-4fa6e08bb514@analog.com> <20260831170303.GB1116206@ragnatech.se> Content-Language: en-US From: Ceclan Dumitru In-Reply-To: <20260831170303.GB1116206@ragnatech.se> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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. >> The drivers have been tested on the following hardware combinations, >> but >> further testing is welcome to ensure no / minimal breakage: >> * Raspberry Pi 5 + MAX9296A + 2xMAX96717 + 2xIMX219 >> * Raspberry Pi 5 + MAX96714 + 1xMAX96717 + 1xIMX219 >> * Raspberry Pi 5 + MAX96716A + 2xMAX96717 + 2xIMX219 >> * Raspberry Pi 5 + MAX96712 + 4xMAX96717 + 4xIMX219 >> * Raspberry Pi 5 + MAX96724 + 4xMAX96717 + 4xIMX219 >> * Raspberry Pi 5 + MAX96792A + 1xMAX96793 + 1xMAX96717 + 2xIMX219 >> * Raspberry Pi 5 + MAX96792A + 2xMAX96717 + 2xIMX219 >> * Renesas V4H + MAX96712 + 2xMAX96717 + 2xIMX219 > > I tested the TPG on Renesas V3U + MAX96712 and it works as just as good > or better then the staging driver this work makes obsolete. >