From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: leilk liu <leilk.liu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Matthias Brugger
<matthias.bgg-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
Catalin Marinas <catalin.marinas-5wv7dgnIgG8@public.gmane.org>,
Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>,
Eddie Huang <eddie.huang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
Hongzhou Yang
<hongzhou.yang-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>,
Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-mediatek-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
srv_heupstream-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org,
Sascha Hauer <kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
Subject: Re: [PATCH 2/3] spi: mediatek: Add spi bus for Mediatek MT8173
Date: Fri, 15 May 2015 10:25:43 +0100 [thread overview]
Message-ID: <20150515092543.GY2761@sirena.org.uk> (raw)
In-Reply-To: <1431675522.2128.13.camel@mhfsdcap03>
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On Fri, May 15, 2015 at 03:38:42PM +0800, leilk liu wrote:
> On Tue, 2015-05-12 at 17:05 +0100, Mark Brown wrote:
> > Implement can_dma() - look for drivers providing that for examples.
> MTK spi hardware uses the dmaengine in spi controller. According to
> datasheet, spi driver just need to enable dma register bit and write a
> physical address to relevant dma address register, so I think it may be
> complex while the driver supports can_dma.
That's how a very large proportion of devices that work with DMA are
done - why would this be complicated? All can_dma() does is report if
DMA is possible.
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next prev parent reply other threads:[~2015-05-15 9:25 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-08 8:55 Add Mediatek SPI driver leilk.liu-NuS5LvNUpcJWk0Htik3J/w
2015-05-08 8:55 ` [PATCH 2/3] spi: mediatek: Add spi bus for Mediatek MT8173 leilk.liu
[not found] ` <1431075343-7887-3-git-send-email-leilk.liu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2015-05-08 17:53 ` Mark Brown
2015-05-12 12:39 ` leilk liu
2015-05-12 16:05 ` Mark Brown
[not found] ` <20150512160540.GB3066-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-05-13 9:26 ` Yingjoe Chen
2015-05-13 11:10 ` Mark Brown
2015-05-13 13:58 ` Yingjoe Chen
2015-05-15 7:38 ` leilk liu
2015-05-15 9:25 ` Mark Brown [this message]
[not found] ` <20150515092543.GY2761-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-06-08 10:15 ` Eddie Huang
2015-06-08 17:59 ` Mark Brown
[not found] ` <20150608175927.GO14071-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-06-09 10:05 ` Eddie Huang
2015-06-09 10:39 ` Mark Brown
[not found] ` <20150609103951.GA14071-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-06-10 8:06 ` Eddie Huang
2015-06-17 9:08 ` Eddie Huang
2015-06-17 12:47 ` Mark Brown
[not found] ` <20150617124758.GE3214-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-06-17 14:10 ` Eddie Huang
2015-06-17 16:35 ` Mark Brown
[not found] ` <20150617163531.GU14071-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-06-18 8:11 ` Eddie Huang
[not found] ` <1431075343-7887-1-git-send-email-leilk.liu-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
2015-05-08 8:55 ` [PATCH 1/3] dt-bindings: ARM: Mediatek: Document devicetree bindings for spi bus leilk.liu-NuS5LvNUpcJWk0Htik3J/w
2015-05-08 8:55 ` [PATCH 3/3] arm64: dts: Add spi bus dts leilk.liu-NuS5LvNUpcJWk0Htik3J/w
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