From: Mark Brown <broonie@kernel.org>
To: leilk liu <leilk.liu@mediatek.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Eddie Huang <eddie.huang@mediatek.com>,
Hongzhou Yang <hongzhou.yang@mediatek.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-spi@vger.kernel.org,
linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com,
Sascha Hauer <kernel@pengutronix.de>
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 9:26 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
2015-05-08 8:55 ` [PATCH 1/3] dt-bindings: ARM: Mediatek: Document devicetree bindings for spi bus leilk.liu
2015-05-08 8:55 ` [PATCH 2/3] spi: mediatek: Add spi bus for Mediatek MT8173 leilk.liu
2015-05-08 17:53 ` Mark Brown
2015-05-12 12:39 ` leilk liu
2015-05-12 16:05 ` Mark Brown
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]
2015-06-08 10:15 ` Eddie Huang
2015-06-08 17:59 ` Mark Brown
2015-06-09 10:05 ` Eddie Huang
2015-06-09 10:39 ` Mark Brown
2015-06-10 8:06 ` Eddie Huang
2015-06-17 9:08 ` Eddie Huang
2015-06-17 12:47 ` Mark Brown
2015-06-17 14:10 ` Eddie Huang
2015-06-17 16:35 ` Mark Brown
2015-06-18 8:11 ` Eddie Huang
2015-05-08 8:55 ` [PATCH 3/3] arm64: dts: Add spi bus dts leilk.liu
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