From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1753660AbaHAGTi (ORCPT <rfc822;w@1wt.eu>);
	Fri, 1 Aug 2014 02:19:38 -0400
Received: from arroyo.ext.ti.com ([192.94.94.40]:35188 "EHLO arroyo.ext.ti.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1752602AbaHAGTh (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Fri, 1 Aug 2014 02:19:37 -0400
Message-ID: <53DB314F.6060706@ti.com>
Date: Fri, 1 Aug 2014 11:48:55 +0530
From: Sekhar Nori <nsekhar@ti.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0
MIME-Version: 1.0
To: Peter Ujfalusi <peter.ujfalusi@ti.com>,
        Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
        <robh+dt@kernel.org>
CC: <devicetree@vger.kernel.org>,
        <davinci-linux-open-source@linux.davincidsp.com>,
        <linux@arm.linux.org.uk>, <pawel.moll@arm.com>,
        <khilman@deeprootsystems.com>, <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 2/6] ARM: DTS: da850: Add node for edma0
References: <1406801934-23334-1-git-send-email-peter.ujfalusi@ti.com> <1406801934-23334-3-git-send-email-peter.ujfalusi@ti.com> <53DA5230.1050200@cogentembedded.com> <53DB210B.5010204@ti.com>
In-Reply-To: <53DB210B.5010204@ti.com>
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Friday 01 August 2014 10:39 AM, Peter Ujfalusi wrote:
> On 07/31/2014 05:26 PM, Sergei Shtylyov wrote:
>> On 07/31/2014 02:18 PM, Peter Ujfalusi wrote:
>>
>>> Add DT node for edma0.
>>
>>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
>>> ---
>>>   arch/arm/boot/dts/da850.dtsi | 6 ++++++
>>>   1 file changed, 6 insertions(+)
>>
>>> diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
>>> index b695548dbb4e..41ce4e8bf227 100644
>>> --- a/arch/arm/boot/dts/da850.dtsi
>>> +++ b/arch/arm/boot/dts/da850.dtsi
>>> @@ -150,6 +150,12 @@
>>>               };
>>>
>>>           };
>>> +        edma0: edma@01c00000 {
>>> +            compatible = "ti,edma3";
>>> +            reg =    <0x0 0x10000>;
>>
>>    Why the mismatch between the unit-address part of the node name and the
>> "reg" property?
> 
> For some reason the whole da850 uses offset from 0x01c00000 for the SoC IPs.
> The nodes are under 'soc' and that has the ranges attribute.
> I do not really like this either.

There is no reason I can remember for why we chose to go the offset +
ranges way. Probably based it on an early OMAP example. Right now lets
keep it that way unless there is a big disadvantage.

Thanks,
Sekhar