Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753003AbcDMRXK (ORCPT ); Wed, 13 Apr 2016 13:23:10 -0400 Received: from eusmtp01.atmel.com ([212.144.249.243]:25579 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752937AbcDMRXI (ORCPT ); Wed, 13 Apr 2016 13:23:08 -0400 From: Cyrille Pitchen To: , CC: , , , , Cyrille Pitchen Subject: [PATCH RFC 0/8] mtd: spi-nor: fix support of Quad SPI memories Date: Wed, 13 Apr 2016 19:23:32 +0200 Message-ID: X-Mailer: git-send-email 1.8.2.2 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2536 Lines: 60 Hi all, this series is RFC but has already been tested on a sama5d2x xplained board with the Atmel QSPI controller + Micron n25q128a13: compatible = "micron,n25q128a13", "jedec,spi-nor"; This first 3 patches of the series are stable and have already been submitted to linux-mtd. They are required as a base for the later patches. Support of Micron memories has been implemented as an example, other memory entries should be updated as needed in the spi_nor_ids[] table. This new way to support Quad SPI memories is inspired by the JEDEC SFDP standard. However SFDP tables are not provided by all memories and some of them badly implement the standard. Also the standard itself can tell whether the memory supports the 2-2-2 mode but doesn't provide the procedure to enter/leave this mode as provided for the 4-4-4 mode. Please note that some commit messages are missing but a review might be really helpfull! :) Almost all the actual rework is done in patch 4. Best regards, Cyrille Cyrille Pitchen (8): mtd: spi-nor: add an alternative method to support memory >16MiB mtd: spi-nor: allow different flash_info entries to share the same JEDEC ID mtd: spi-nor: add entry for Macronix mx25l25673g mtd: spi-nor: fix support of Dual (x-y-2) and Quad (x-y-4) SPI protocols mtd: m25p80: add support of dual and quad spi protocols to all commands mtd: spi-nor: add support for Micron Dual and Quad SPI memories Documentation: atmel-quadspi: add binding file for Atmel QSPI driver mtd: atmel-quadspi: add driver for Atmel QSPI controller .../devicetree/bindings/mtd/atmel-quadspi.txt | 32 + drivers/mtd/devices/m25p80.c | 212 ++++-- drivers/mtd/devices/serial_flash_cmds.h | 7 - drivers/mtd/devices/st_spi_fsm.c | 28 +- drivers/mtd/spi-nor/Kconfig | 9 + drivers/mtd/spi-nor/Makefile | 1 + drivers/mtd/spi-nor/atmel-quadspi.c | 812 +++++++++++++++++++++ drivers/mtd/spi-nor/fsl-quadspi.c | 9 +- drivers/mtd/spi-nor/mtk-quadspi.c | 17 +- drivers/mtd/spi-nor/nxp-spifi.c | 22 +- drivers/mtd/spi-nor/spi-nor.c | 635 +++++++++++++--- include/linux/mtd/spi-nor.h | 160 +++- 12 files changed, 1750 insertions(+), 194 deletions(-) create mode 100644 Documentation/devicetree/bindings/mtd/atmel-quadspi.txt create mode 100644 drivers/mtd/spi-nor/atmel-quadspi.c -- 1.8.2.2