Messages in this thread | | | From | Cyrille Pitchen <> | Subject | [PATCH 0/3] mtd: spi-nor: add support to SPI 1-2-2 and SPI 1-4-4 protocols | Date | Wed, 25 Jan 2017 18:49:25 +0100 |
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Hi all,
this series of patches updates the spi-nor framework to add support to more SPI protocols. Also the 3rd argument of spi_nor_scan() is changed so we can now make the difference between read and write operations. Indeed some SPI controllers may support Quad SPI protocols only for read operations but not for write operations.
The new argument is designed so SPI controller drivers can precisely describe their hardware capabilies to the spi-nor framework. In turn, this framework selects the right SPI protocols, op code, number of dummy cycles and so on for (Fast) Read and Page Program commands by computing the best match between the SPI memory and controller hardware capabilities.
Please note that a spi_nor_basic_flash_parameter structure is also introduced by this series. It's used to describe the hardware capabilities and requirements of SPI memories. The structure fields are based on what can be read from the SFDP Basic Flash Parameter table of the JESD216B specification. Indeed this series of patch is also a base for a further series which will add support to the SFDP tables in the spi-nor framework.
This series is based on the next branch of the spi-nor tree.
Best regards,
Cyrille
Cyrille Pitchen (3): mtd: spi-nor: add support of SPI protocols like SPI 1-2-2 and SPI 1-4-4 mtd: spi-nor: remove unused set_quad_mode() function mtd: m25p80: add support of SPI 1-2-2 and 1-4-4 protocols
drivers/mtd/devices/m25p80.c | 133 +++++++++++---- drivers/mtd/spi-nor/aspeed-smc.c | 22 +-- drivers/mtd/spi-nor/atmel-quadspi.c | 82 ++++++---- drivers/mtd/spi-nor/cadence-quadspi.c | 18 ++- drivers/mtd/spi-nor/fsl-quadspi.c | 8 +- drivers/mtd/spi-nor/hisi-sfc.c | 31 +++- drivers/mtd/spi-nor/intel-spi.c | 6 +- drivers/mtd/spi-nor/mtk-quadspi.c | 16 +- drivers/mtd/spi-nor/nxp-spifi.c | 21 +-- drivers/mtd/spi-nor/spi-nor.c | 295 +++++++++++++++++++++++++--------- include/linux/mtd/spi-nor.h | 163 +++++++++++++++++-- 11 files changed, 604 insertions(+), 191 deletions(-)
-- 2.7.4
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