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From: Arnd Bergmann <arnd@arndb.de>
To: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: vinod.koul@intel.com, dan.j.williams@intel.com,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	dmaengine@vger.kernel.org
Subject: Re: [PATCH 1/2] dt: dma: Add DT binding document for jz4780-dma
Date: Thu, 29 Jan 2015 14:10:36 +0100	[thread overview]
Message-ID: <2670922.EEM3IMjO9B@wuerfel> (raw)
In-Reply-To: <1422533980-42761-2-git-send-email-Zubair.Kakakhel@imgtec.com>

On Thursday 29 January 2015 12:19:38 Zubair Lutfullah Kakakhel wrote:
> 
> +1. Transmit request type: The DMA request type for transfers to the device on
> +   the allocated channel, as defined in the SoC documentation. If set to 0,
> +   transfers to the device will not be allowed on the channel.
> +
> +2. Receive request type: The DMA request type for transfers from the device on
> +   the allocated channel, as defined in the SoC documentation. If set to 0,
> +   transfers from the device will not be allowed on the channel.

It's fairly unusual to have separate fields for these two, most other
driver just use one. What would be a use-case for passing both?

	Arnd

  reply	other threads:[~2015-01-29 13:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-29 12:19 [PATCH 0/2] dt: dma: Add DMA driver for jz4780 Zubair Lutfullah Kakakhel
2015-01-29 12:19 ` [PATCH 1/2] dt: dma: Add DT binding document for jz4780-dma Zubair Lutfullah Kakakhel
2015-01-29 13:10   ` Arnd Bergmann [this message]
2015-01-29 12:19 ` [PATCH 2/2] dma: jz4780: add driver for the Ingenic JZ4780 DMA controller Zubair Lutfullah Kakakhel
2015-02-23 11:15   ` Vinod Koul
2015-02-24 18:04     ` Zubair Lutfullah Kakakhel

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