From mboxrd@z Thu Jan  1 00:00:00 1970
From: Timur Tabi <timur@codeaurora.org>
Subject: Re: [PATCH 1/2] [v4] net: emac: emac gigabit ethernet controller
 driver
Date: Fri, 15 Apr 2016 10:44:48 -0500
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To: Rob Herring <robh+dt@kernel.org>
Cc: Vikram Sethi <vikrams@codeaurora.org>, Florian Fainelli <f.fainelli@gmail.com>, netdev <netdev@vger.kernel.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, linux-arm-msm <linux-arm-msm@vger.kernel.org>, Sagar Dharia <sdharia@codeaurora.org>, Shanker Donthineni <shankerd@codeaurora.org>, Greg Kroah-Hartman <greg@kroah.com>, Christopher Covington <cov@codeaurora.org>, Gilad Avidov <gavidov@codeaurora.org>, Andrew Lunn <andrew@lunn.ch>, Bjorn Andersson <bjorn.andersson@linaro.org>, Mark Langsdorf <mlangsdo@redhat.com>, Jon Masters <jcm@redhat.com>, Andy Gross <agross@codeaurora.org>, "David S. Miller" <davem@davemloft.net>
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Rob Herring wrote:
>> >
>> >         dma-mask = <0 0xffffffff>;
>> >
>> >or
>> >
>> >         dma-mask = <0xffffffff 0xffffffff>;
> No. See dma-ranges.

How exactly should I use dma-ranges?  I can't find any other drivers 
that queries that property and uses the result to call dma_set_mask.  I 
thought the dma-ranges property is intended to specify address 
translation.  I don't need to translate any address, I just need to know 
a single number.

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