linux-kernel - Re: [PATCHv3 1/2] ARM: msm: Add support for APQ8074 Dragonboard

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Date:	Mon, 9 Sep 2013 14:48:08 -0500
From:	Kumar Gala <galak@...eaurora.org>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	Rohit Vaswani <rvaswani@...eaurora.org>,
	Olof Johansson <olof@...om.net>,
	David Brown <davidb@...eaurora.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ian.campbell@...rix.com>,
	Russell King <linux@....linux.org.uk>,
	Daniel Walker <dwalker@...o99.com>,
	Bryan Huntsman <bryanh@...eaurora.org>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCHv3 1/2] ARM: msm: Add support for APQ8074 Dragonboard


On Sep 9, 2013, at 2:29 PM, Stephen Warren wrote:

> On 09/09/2013 01:17 PM, Kumar Gala wrote:
>> 
>> On Sep 9, 2013, at 12:48 PM, Rohit Vaswani wrote:
>> 
>>> On 9/6/2013 2:50 PM, Olof Johansson wrote:
>>>> Hi,
>>>> 
>>>> Some comments below.
>>>> 
>>>> On Fri, Sep 06, 2013 at 12:32:22PM -0700, Rohit Vaswani wrote:
>>>>> This patch adds basic board support for APQ8074 Dragonboard
>>>>> <snip>
>>>>> dtb-$(CONFIG_ARCH_MSM) += msm8660-surf.dtb \
>>>>> -	msm8960-cdp.dtb
>>>>> +	msm8960-cdp.dtb \
>>>>> +	apq8074-dragonboard.dtb
>>>> Please add boards alphabetically.
>>> Will do.
>>>> 
>>>>> dtb-$(CONFIG_ARCH_MVEBU) += armada-370-db.dtb \
>>>>> 	armada-370-mirabox.dtb \
>>>>> 	armada-370-rd.dtb \
>>>>> diff --git a/arch/arm/boot/dts/apq8074-dragonboard.dts b/arch/arm/boot/dts/apq8074-dragonboard.dts
>>>>> new file mode 100644
>>>>> index 0000000..5b7b6a0
>>>>> --- /dev/null
>>>>> +++ b/arch/arm/boot/dts/apq8074-dragonboard.dts
>>>> arch/arm/boot/dts/ is getting really crowded. It's been working best if the SoC
>>>> family or vendor is used as a prefix to keep things a bit more organized. In
>>>> that spirit, prefixing these with msm-<foo> makes sense. Can you please do so?
>>> 
>>> Sure. But the board is called an APQ8074 and we wanted to keep the naming consistent with that.
>> 
>> If we do this we should use qcom, not msm as the prefix.  Match the device tree vendor prefix.
> 
> Hmm. It'd be nice for the filenames to be ${soc}-${board} so that e.g.
> U-Boot can easily calculate the DTB filename based on its soc/board
> environment variables... Luckily in my case for Tegra, all the Tegra
> chip names start with "Tegra", so we already sort all our DTB filenames
> together in the directory listing:-)

u-boot's not supported on MSM platforms, so not sure what purpose this serves.

we might want to just introduce vendor dirs so its arch/arm/boot/dts/{vendor}/{soc}-{board}

Not sure if we want to argue about {vendor} vs {sub-arch}.

- k
-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation

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