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[184.205.110.29]) by smtp.gmail.com with ESMTPSA id j23sm2333837oij.56.2019.12.19.12.41.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Dec 2019 12:41:09 -0800 (PST) Date: Thu, 19 Dec 2019 14:41:07 -0600 From: Rob Herring To: Masahiro Yamada Subject: Re: [PATCH v2 1/2] dt-binding: mtd: denali_dt: document reset property Message-ID: <20191219204107.GA7670@bogus> References: <20191211054538.8283-1-yamada.masahiro@socionext.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20191211054538.8283-1-yamada.masahiro@socionext.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191219_124111_068120_531EAC4D X-CRM114-Status: GOOD ( 15.50 ) 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: Marek Vasut , devicetree@vger.kernel.org, Vignesh Raghavendra , Masahiro Yamada , Richard Weinberger , linux-kernel@vger.kernel.org, Ley Foon Tan , Dinh Nguyen , linux-mtd@lists.infradead.org, Philipp Zabel , Miquel Raynal , Mark Rutland Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org On Wed, 11 Dec 2019 14:45:37 +0900, Masahiro Yamada wrote: > According to the Denali NAND Flash Memory Controller User's Guide, > this IP has two reset signals. > > rst_n: reset most of FFs in the controller core > reg_rst_n: reset all FFs in the register interface, and in the > initialization sequencer > > This commit specifies those reset signals. > > It is possible to control them separately from the IP point of view > although they might be often tied up together in actual SoC integration. > > At least for the upstream platforms, Altera/Intel SOCFPGA and Socionext > UniPhier, the reset controller seems to provide only 1-bit control for > the NAND controller. If it is the case, the resets property should > reference to the same phandles for "nand" and "reg" resets, like this: > > resets = <&nand_rst>, <&nand_rst>; > reset-names = "nand", "reg"; > > Signed-off-by: Masahiro Yamada > --- > > Changes in v2: > - Split into two patches > > Documentation/devicetree/bindings/mtd/denali-nand.txt | 7 +++++++ > 1 file changed, 7 insertions(+) > Acked-by: Rob Herring ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/