[U-Boot] [RFC] 0/4] Add Pl330 DMA support

[Marek Vasut]

On 10/10/2016 05:52 PM, Dinh Nguyen wrote:
> Hi,

Hi,

> This patchset adds the PL330 DMA driver to U-Boot. The SoCFPGA platform makes
> use of the PL330 to transfer zereos to the SDRAM which enables the ECC bit.

Is there some considerable performance benefit over memset() in this case ?

> This is only an RFC because after rebasing to v2016.11-rc1, I had to revert
> the following patch "a78cd8613204 ARM: Rework and correct barrier definitions"
> in order for this patch set to work correctly. With the above patch applied,
> after the SDRAM scrubbing is complete, the SPL is failing to find the MMC
> device.
> 
> I'm continue to debug this, but would like to solicit comments with this
> patchset.
> 
> Thanks,
> Dinh
> 
> 
> Dinh Nguyen (4):
>   drivers: dma: Add the ARM PL330 DMA driver
>   dma: Kconfig: Add CONFIG_PL330_DMA entry
>   dm: add DMA_SUPPORTS_DEV_TO_MEM type to DMA_UCLASS
>   arm: socfpga: scrub the SDRAM to properly enable ECC support
> 
>  arch/arm/include/asm/pl330.h                       | 105 +++
>  arch/arm/mach-socfpga/include/mach/reset_manager.h |  21 +
>  arch/arm/mach-socfpga/include/mach/sdram.h         |   2 +
>  arch/arm/mach-socfpga/spl.c                        |   8 +
>  arch/arm/mach-socfpga/wrap_sdram_config.c          |  28 +
>  configs/socfpga_cyclone5_defconfig                 |   2 +
>  drivers/dma/Kconfig                                |   4 +
>  drivers/dma/Makefile                               |   1 +
>  drivers/dma/dma-uclass.c                           |   3 +-
>  drivers/dma/pl330.c                                | 942 +++++++++++++++++++++
>  10 files changed, 1115 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm/include/asm/pl330.h
>  create mode 100644 drivers/dma/pl330.c
> 


-- 
Best regards,
Marek Vasut