From mboxrd@z Thu Jan  1 00:00:00 1970
From: See, Chin Liang <chin.liang.see@intel.com>
Date: Thu, 31 May 2018 09:50:33 +0000
Subject: [U-Boot] [PATCH 0/5] Add DMA driver for DMA330 controller
In-Reply-To: <1014e2d6-8824-8a3b-e3cb-78ce3cff6310@denx.de>
References: <1527754134-164985-1-git-send-email-tien.fong.chee@intel.com>
 <1014e2d6-8824-8a3b-e3cb-78ce3cff6310@denx.de>
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On Thu, 2018-05-31 at 11:24 +0200, Marek Vasut wrote:
> On 05/31/2018 10:08 AM, tien.fong.chee at 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


>