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