[PATCH v5 0/3] Static memory controllers for the Aspeed SoC

[Cyrille Pitchen]

Le 21/12/2016 à 17:57, Cédric Le Goater a écrit :
> Hello,
> 
> Here is a series 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 compatible but there are
> some slight differences on the AST2400.
> 
> The driver only supports 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 v4:
>  - improved IO routines with Cyrille's suggestions
>  - added dummy bytes hanling for fast read commands
>  - removed the 'label' property from jedec,spi-nor. Needs more
>    discussion.
> 
> Changes since v3:
>  - reworked IO routines to use io{read,write}32_rep
>  - changed config option to SPI_ASPEED_SMC
>  - fixed aspeed_smc_chip_setup_init() returned value
> 
> 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 (3):
>   mtd: spi-nor: add memory controllers for the Aspeed AST2500 SoC
>   mtd: aspeed: add memory controllers for the Aspeed AST2400 SoC
>   mtd: spi-nor: bindings for the Aspeed memory controllers
> 
>  .../devicetree/bindings/mtd/aspeed-smc.txt         |  51 ++
>  drivers/mtd/spi-nor/Kconfig                        |  10 +
>  drivers/mtd/spi-nor/Makefile                       |   1 +
>  drivers/mtd/spi-nor/aspeed-smc.c                   | 759 +++++++++++++++++++++
>  4 files changed, 821 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mtd/aspeed-smc.txt
>  create mode 100644 drivers/mtd/spi-nor/aspeed-smc.c
> 

Applied to git://github.com/spi-nor/linux.git

Thanks!