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Fri, 24 Jul 2020 08:54:40 -0700 (PDT) Received: from kozik-lap ([194.230.155.213]) by smtp.googlemail.com with ESMTPSA id 78sm7983174wma.31.2020.07.24.08.54.38 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 24 Jul 2020 08:54:39 -0700 (PDT) Date: Fri, 24 Jul 2020 17:54:36 +0200 From: Krzysztof Kozlowski To: Paul Cercueil Subject: Re: [PATCH v3 2/2] mtd: rawnand: ingenic: Limit MTD_NAND_JZ4780 to architecture only Message-ID: <20200724155436.GA7460@kozik-lap> References: <20200724145401.2566-1-krzk@kernel.org> <20200724145401.2566-3-krzk@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200724_115441_888547_4F55ECD0 X-CRM114-Status: GOOD ( 19.25 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vignesh Raghavendra , Arnd Bergmann , Richard Weinberger , linux-kernel@vger.kernel.org, Harvey Hunt , linux-mtd@lists.infradead.org, Miquel Raynal Content-Type: text/plain; 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Fri, 24 Jul 2020 08:54:39 -0700 (PDT) Date: Fri, 24 Jul 2020 17:54:36 +0200 From: Krzysztof Kozlowski To: Paul Cercueil Cc: Harvey Hunt , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, Arnd Bergmann Subject: Re: [PATCH v3 2/2] mtd: rawnand: ingenic: Limit MTD_NAND_JZ4780 to architecture only Message-ID: <20200724155436.GA7460@kozik-lap> References: <20200724145401.2566-1-krzk@kernel.org> <20200724145401.2566-3-krzk@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8BIT In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 24, 2020 at 05:50:06PM +0200, Paul Cercueil wrote: > > > Le ven. 24 juil. 2020 à 17:33, Krzysztof Kozlowski a écrit > : > > On Fri, 24 Jul 2020 at 17:19, Paul Cercueil > > wrote: > > > > > > Hi Krzysztof, > > > > > > > > > Le ven. 24 juil. 2020 à 16:54, Krzysztof Kozlowski > > > a > > > écrit : > > > > Enabling the MTD_NAND_JZ4780 driver makes sense only for specific > > > > hardware - the Ingenic SoC architecture. Set it's dependency to > > > > MACH_INGENIC so it will not appear on unrelated architectures > > > (easier > > > > job for downstream/distro kernel engineers). > > > > > > Disagreed. It was done this way so that distro kernels can support > > > multiple SoCs. > > > > They will still be able to support multiple SoCs. Nothing changed > > here. The same we do for all ARM drivers (SoCs are multiplatform)... > > Unless you want to say that it is possible to support Ingenic SoC > > without MACH_INGENIC? > > On MIPS, the SoC selection is a Kconfig "choice", so you can only support > one SoC family, unfortunately. Let's say someone selected then some other architecture (MIPS_ALCHEMY). They could select this MTD driver. Does it mean they would be able to run it on Ingenic hardware? > I'm the one to blame for using "depends on > MIPS || COMPILE_TEST" on ingenic drivers, maybe it should depend on > MACH_INGENIC indeed, but then it should be made possible to support more > than one SoC family. > > That's something that should be pointed out to the MIPS mailing list, I > believe. Somehow JZ4780 entries in Maintainers do not mention MIPS list... > > Btw: Does that mean you are the new maintainer for drivers/memory/? Yes, that's the coming change. https://lore.kernel.org/lkml/20200724140345.GB13472@kozik-lap/T/#m91ca20920a7ec5f228a595f1816c15b6c85b6a09 Best regards, Krzysztof