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Peper" , debian-arm@lists.debian.org, "Dmitry Torokhov" , "Alexandre Torgue" Message-Id: <0ca5b09d-13f6-4ea8-8a25-a189f1875a75@app.fastmail.com> In-Reply-To: <20240801182313.GD47080@darkstar.musicnaut.iki.fi> References: <2831c5a6-cfbf-4fe0-b51c-0396e5b0aeb7@app.fastmail.com> <20240731191332.GB47080@darkstar.musicnaut.iki.fi> <20240801182313.GD47080@darkstar.musicnaut.iki.fi> Subject: Re: [RFC} arm architecture board/feature deprecation timeline Content-Type: text/plain Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240802_055511_799664_328C2CA8 X-CRM114-Status: GOOD ( 18.00 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Aug 1, 2024, at 20:23, Aaro Koskinen wrote: > On Thu, Aug 01, 2024 at 10:59:38AM +0200, Arnd Bergmann wrote: >> >> Would the timing make any difference to you? I.e. does it help >> to keep another year or two, or would dropping it in early 2025 >> be the same? > > Early 2025 could come too soon, but anyway during 2025 sounds OK. Let's > see if anyone else has comments. At least one more LTS release where it > has been tested would be nice. To be clear: with "early 2025" I meant after the next LTS release (6.12 as it seems), but one LTS later (early 2026) is still a good outlook. >> Ok, noted. Since you are doing the testing, that at least means >> we have a chance of cleaning up the code gradually towards using >> DT. Dmitry has started a migration of platform_data towards >> DT compatible device properties, which can be done gradually >> for the 22 platform drivers you use. This unfortunately still >> leaves the nonstandard dmaengine interface (for UDC), but we >> can deal with that later. > > I have some plans to work on that. There's a long-standing bug with 15xx > DMA, but I have gotten that working, just need send those fixes out. After > that the conversion to new dmaengine should be more straightforward, > as we have a working testable reference for both boards using the UDC. Nice, that does give a realistic hope of eventually doing a full DT conversion then. If we manage to do both the DMA engine and the device properties work, I would hope that writing an equivalent dts file gets fairly easy. Arnd