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Peper" , linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, "Russell King" , "Linus Walleij" , "Richard Earnshaw" , "Richard Sandiford" , "Ramana Radhakrishnan" , "Nicolas Pitre" , "Krzysztof Kozlowski" , "Mark Brown" , "Kristoffer Ericson" , "Robert Jarzmik" , "Aaro Koskinen" , "Janusz Krzysztofik" , "Tony Lindgren" , Linux-OMAP , "Nikita Shubin" , linux-samsung-soc@vger.kernel.org, "Andrew Lunn" , "Sebastian Hesselbarth" , "Gregory Clement" , debian-arm@lists.debian.org, "Dmitry Torokhov" , "Alexandre Torgue" Message-Id: <790bf2c4-2ecf-429c-8e28-ad5807ffed7a@app.fastmail.com> In-Reply-To: <3413899.e9J7NaK4W3@earth> References: <2831c5a6-cfbf-4fe0-b51c-0396e5b0aeb7@app.fastmail.com> <3413899.e9J7NaK4W3@earth> 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-20240819_021733_101621_CA091D92 X-CRM114-Status: GOOD ( 19.18 ) 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 15, 2024, at 21:53, jeremy@jeremypeper.com wrote: > For the Buffalo devices we still have a lot of folks using Marvell Kirkwood, > Orion5x and MV78100 NAS devices. In a world where SATA provides the cheapest $ > per TB storage and Gigabit Ethernet is still standard they end up being > surprisingly relevant for hobbyists. > > The two pre-DTB device files that we're still using are: > mach-mv78xx0/buffalo-wxl-setup.c > mach-orion5x/terastation_pro2-setup.c > > If those can stick around for the next LTS kernel that should give me > sufficient > time to try converting them to DTS like the other Orion5x/Kirkwood > devices. Right, the plan was always to keep them for this year's LTS kernel, which is almost certainly going to be 6.12. This should be enough for Debian Trixie. I expect that the terastation pro2 is going to be fairly easy to convert to DT as there is already support for similar Orion5x machines. In this case I would just remove all the Orion5x board files and you can add a dts file later on. The bit I'm unsure about here is legacy PCI support. I see that the board file enables both PCI and PCIe, but I don't know if both are actually used, or if everything is on PCIe. I have some old patches for separating orion legacy PCI from PCIe support, as only the latter has a modern driver (shared with kirkwood and armadaxp). If you can confirm that the machine actually uses PCI, I can dig those out from my backups. The WXL machine is going to be more work since there is currently no DT support for mv78xx0, but everything except the pin controller should at least have a driver since this SoC is somewhere between Kirkwood and Dove. Having a hack for the pin controller similar to what orion5x has is probably fine, especially if you only need to support one machine. Let me know if you need any help during the conversion. Arnd