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[66.90.144.107]) by smtp.gmail.com with ESMTPSA id bc32-20020a05682016a000b0035eb4e5a6dasm1361259oob.48.2022.06.01.12.51.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Jun 2022 12:51:05 -0700 (PDT) Received: (nullmailer pid 320227 invoked by uid 1000); Wed, 01 Jun 2022 19:51:04 -0000 Date: Wed, 1 Jun 2022 14:51:04 -0500 From: Rob Herring To: Liang Yang Cc: Miquel Raynal , linux-arm-kernel@lists.infradead.org, XianWei Zhao , Jerome Brunet , YongHui Yu , Richard Weinberger , Rob Herring , devicetree@vger.kernel.org, Kevin Hilman , linux-kernel@vger.kernel.org, Neil Armstrong , Martin Blumenstingl , linux-amlogic@lists.infradead.org, Jianxin Pan , Victor Wan , BiChao Zheng , Vignesh Raghavendra , linux-mtd@lists.infradead.org, Kelvin Zhang Subject: Re: [PATCH v5 1/4] dt-bindings: nand: meson: fix meson nfc clock Message-ID: <20220601195104.GA320194-robh@kernel.org> References: <20220513123404.48513-1-liang.yang@amlogic.com> <20220513123404.48513-2-liang.yang@amlogic.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220513123404.48513-2-liang.yang@amlogic.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220601_125107_248686_F004A4AE X-CRM114-Status: GOOD ( 13.56 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 Fri, 13 May 2022 20:34:01 +0800, Liang Yang wrote: > EMMC and NAND have the same clock control register named 'SD_EMMC_CLOCK' > which is defined in EMMC port internally. bit0~5 of 'SD_EMMC_CLOCK' is > the divider and bit6~7 is the mux for fix pll and xtal. At the beginning, > a common MMC and NAND sub-clock was discussed and planed to be implemented > as NFC clock provider, but now this series of patches of a common MMC and > NAND sub-clock are never being accepted and the current binding was never > valid. the reasons are: > 1. EMMC and NAND, which are mutually exclusive anyway > 2. coupling the EMMC and NAND. > 3. it seems that a common MMC and NAND sub-clock is over engineered. > and let us see the link for more information: > https://lore.kernel.org/all/20220121074508.42168-5-liang.yang@amlogic.com > so The meson nfc can't work now, let us rework the clock. > > Signed-off-by: Liang Yang > --- > .../bindings/mtd/amlogic,meson-nand.txt | 29 ++++++++----------- > 1 file changed, 12 insertions(+), 17 deletions(-) > Acked-by: Rob Herring ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/