On Thu, 2018-05-31 at 11:24 +0200, Marek Vasut wrote:
On 05/31/2018 10:08 AM, tien.fong.chee@intel.com wrote:
From: Tien Fong Chee tien.fong.chee@intel.com
This patchset contains dm driver for DMA330 controller.
This series is working on top of u-boot-socfpga.git - http://git.denx.de/u-boot.git .
Tien Fong Chee (5): drivers: dma: Enable DMA-330 driver support drivers: dma: Add function to zeroes a range of destination such as memory drivers: dma: Factor out dma_get_device from DMA class function include: dma: Update the function description for dma_memcpy arm: dts: socfpga: stratix10: update pdma
arch/arm/dts/socfpga_stratix10.dtsi | 20 + drivers/dma/Kconfig | 9 +- drivers/dma/Makefile | 1 + drivers/dma/dma-uclass.c | 23 +- drivers/dma/dma330.c | 1514 +++++++++++++++++++++++++++++++++++ drivers/mtd/spi/spi_flash.c | 9 +- include/dma.h | 19 +- include/dma330.h | 136 ++++ 8 files changed, 1719 insertions(+), 12 deletions(-) create mode 100644 drivers/dma/dma330.c create mode 100644 include/dma330.h
I presume this is to zero-out the ECC RAM ? Just enable caches and use memset, it is much faster than this DMA witchcraft, at least on the A10.
Yes and no :)
The patch enable DMA-330 support and also zero-out ECC RAM.
While for the speed, DMA still faster as it has larger burst size. We can also parallel the zero out task with other tasks such as flash controller init.
Thanks Chin Liang