Hello, Here is a serie introducing a new driver for the different memory controllers of the Aspeed AST2500 and AST2400 SoCs. Each SoC has at least a memory controller for the BMC firmware and another one for the host firmware. The register set are mostly comptatible but there are some slight differences on the AST2400. The driver only support SPI type flash. Tested on: * OpenPOWER Palmetto (AST2400) with FMC controller : n25q256a SPI controller : mx25l25635e and n25q512ax3 * Evaluation board (AST2500) with FMC controller : w25q256 SPI controller : w25q256 * OpenPOWER Witherspoon (AST2500) with FMC controller : mx25l25635e * 2 SPI controller : mx66l1g45g Changes since v2: - splitted patch to distinguish AST2400 and AST2500 controllers - fixed controller names - introduced prepare/unprepare ops - introduced a aspeed_smc_setup_flash() routine - various cleanups Changes since v1: - added a set4b ops to handle difference in the controllers - simplified the IO routines - prepared for fast read using dummy cycles Work in progress: - read optimization using higher SPI clock frequencies - command mode to direct reads from AHB - DMA support Thanks, C. Cédric Le Goater (5): mtd: spi-nor: add memory controllers for the Aspeed AST2500 SoC mtd: aspeed: add memory controllers for the Aspeed AST2400 SoC mtd: aspeed: used a label property mtd: spi-nor: bindings for the Aspeed memory controllers mtd: spi-nor: add a label property to jedec,spi-nor .../devicetree/bindings/mtd/aspeed-smc.txt | 51 ++ .../devicetree/bindings/mtd/jedec,spi-nor.txt | 2 + drivers/mtd/spi-nor/Kconfig | 10 + drivers/mtd/spi-nor/Makefile | 1 + drivers/mtd/spi-nor/aspeed-smc.c | 770 +++++++++++++++++++++ 5 files changed, 834 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/aspeed-smc.txt create mode 100644 drivers/mtd/spi-nor/aspeed-smc.c -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
