linux-kernel - Re: [PATCH/RFC 0/6] DMA: shdma: add Device Tree support

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Message-ID: <Pine.LNX.4.64.1305020936400.17181@axis700.grange>
Date:	Thu, 2 May 2013 09:47:52 +0200 (CEST)
From:	Guennadi Liakhovetski <g.liakhovetski@....de>
To:	linux-sh@...r.kernel.org
cc:	Vinod Koul <vinod.koul@...el.com>,
	Magnus Damm <magnus.damm@...il.com>,
	linux-kernel@...r.kernel.org, Simon Horman <horms@...ge.net.au>,
	Chris Ball <cjb@...top.org>
Subject: Re: [PATCH/RFC 0/6] DMA: shdma: add Device Tree support

Hi Chris, Simon, Vinod (in alphabetical order :-) )

On Thu, 11 Apr 2013, Guennadi Liakhovetski wrote:

> This patch series adds Device Tree support to the shdma dmaengine driver 
> and illustraits its use with the kzm9g-reference board's MMCIF interface.

Formally patches in this series belong to your 3 trees: 1-3 and 7 
(documentation, sent later separately) to DMA, 4 and 6 to ARM/shmobile, 5 
to MMC. However, they can actually be safely applied in any order, as long 
as per-tree patches are kept together. Even if the DMA portion is applied 
last, the MMC driver will find DMA DT bindings in the DT, will request 
channels, but no DMA channels will be found, then the driver will fall 
back to PIO.

So, it's up to you to decide, whether to pull these patches separately via 
respective trees, or have some of them acked and push all of them via one 
tree.

Thanks
Guennadi

> Cc: Guennadi Liakhovetski <g.liakhovetski+renesas@...il.com>
> 
> Guennadi Liakhovetski (6):
>   DMA: shdma: (cosmetic) don't re-calculate a pointer
>   DMA: shdma: shdma_chan_filter() has to be in shdma-base.h
>   DMA: shdma: add DT support
>   ARM: shmobile: sh73a0: add support for the DMA0 controller in DT
>   mmc: sh_mmcif: add support for Device Tree DMA bindings
>   ARM: shmobile: kzm9g-reference: add DMA channels to the MMCIF DT
> 
>  arch/arm/boot/dts/sh73a0-kzm9g-reference.dts |    3 ++
>  arch/arm/boot/dts/sh73a0.dtsi                |   36 ++++++++++++++++++
>  arch/arm/mach-shmobile/setup-sh73a0.c        |    4 ++
>  drivers/dma/sh/shdma-base.c                  |   51 +++++++++++++++++++++++---
>  drivers/dma/sh/shdma.c                       |   46 ++++++++++++++++++++----
>  drivers/mmc/host/sh_mmcif.c                  |   29 +++++++++------
>  include/linux/sh_dma.h                       |    2 -
>  include/linux/shdma-base.h                   |    6 +++
>  8 files changed, 151 insertions(+), 26 deletions(-)
> 
> -- 
> 1.7.2.5
> 
> Thanks
> Guennadi
> ---
> Guennadi Liakhovetski, Ph.D.
> Freelance Open-Source Software Developer
> http://www.open-technology.de/
> 

---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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