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Fri, 14 Feb 2020 22:59:35 -0800 (PST) From: Chuanhong Guo To: linux-mediatek@lists.infradead.org, linux-spi@vger.kernel.org, linux-mtd@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH 0/2] rewrite mtk-quadspi spi-nor driver with spi-mem Date: Sat, 15 Feb 2020 14:58:24 +0800 Message-Id: <20200215065826.739102-1-gch981213@gmail.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200214_225938_130946_ACE0B79F X-CRM114-Status: GOOD ( 11.33 ) X-Spam-Score: 0.1 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (0.1 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider [gch981213[at]gmail.com] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.2 FREEMAIL_ENVFROM_END_DIGIT Envelope-from freemail username ends in digit [gch981213[at]gmail.com] -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Vignesh Raghavendra , Richard Weinberger , Mark Brown , linux-kernel@vger.kernel.org, Rob Herring , Miquel Raynal , Matthias Brugger , Chuanhong Guo , linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org This patchset adds a spi-mem driver for Mediatek SPI-NOR controller, which already has limited support by mtk-quadspi. For benefits of this replacement, please check commit message of the 1st patch. To keep patchset small for easier reviewing, there will be 3 patchsets including this one. 1. add the new driver, which is this patchset. 2. update existing dts for the new driver: spi-max-frequency is missing in current mtk-quadspi binding. Old driver parses child node manually so it doesn't need this, but new spi-mem driver is probed via spi subsystem which requires the presence of spi-max-frequency. Since this doesn't break old driver support, I'll send this separately as a standalone patch. 3. removing the old driver. I'll create this commit after 1 and 2 are applied to avoid possible rebasing due to any changes in the old driver. Chuanhong Guo (2): spi: add support for mediatek spi-nor controller dt-bindings: convert mtk-quadspi binding doc for spi-mtk-nor .../mtk-quadspi.txt => spi/spi-mtk-nor.txt} | 34 +- drivers/spi/Kconfig | 10 + drivers/spi/Makefile | 1 + drivers/spi/spi-mtk-nor.c | 689 ++++++++++++++++++ 4 files changed, 715 insertions(+), 19 deletions(-) rename Documentation/devicetree/bindings/{mtd/mtk-quadspi.txt => spi/spi-mtk-nor.txt} (62%) create mode 100644 drivers/spi/spi-mtk-nor.c