From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sudeep Holla <sudeep.holla@arm.com>
Subject: Re: [PATCH 3/6] ARM: dts: sun8i: add a cpu0 label to cpu@0 node on
 A23/33
Date: Tue, 13 Dec 2016 16:45:05 +0000
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To: Chen-Yu Tsai <wens@csie.org>
Cc: devicetree <devicetree@vger.kernel.org>, Quentin Schulz <quentin.schulz@free-electrons.com>, Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@codeaurora.org>, Russell King <linux@armlinux.org.uk>, linux-kernel <linux-kernel@vger.kernel.org>, Hans de Goede <hdegoede@redhat.com>, Icenowy Zheng <icenowy@aosc.xyz>, Sudeep Holla <sudeep.holla@arm.com>, Maxime Ripard <maxime.ripard@free-electrons.com>, linux-clk <linux-clk@vger.kernel.org>, linux-arm-kernel <linux-arm-kernel@lists.infradead.org>, Jorik Jonker <jorik@kippendief.biz>
List-Id: devicetree@vger.kernel.org



On 13/12/16 16:31, Chen-Yu Tsai wrote:
> On Wed, Dec 14, 2016 at 12:09 AM, Sudeep Holla <sudeep.holla@arm.com> wrote:
>>
>>
>> On 13/12/16 15:22, Icenowy Zheng wrote:
>>> A "cpu0" label is needed on cpu@0 for cpufreq-dt to work.
>>>
>>
>> IIUC any label should be fine and I don't see anything in the driver
>> looking for such label name. All I see is it looks for cpu0 regulator
>> for *legacy* DTs
>>
>>> Add such a label, in order to prepare for cpufreq support of A23/33.
>>>
>>
>> You need this as you add the same label in the following patches. The
>> commit message sounds like cpufreq-dt search for that label by name.
> 
> I think a more proper explanation would be:
> 
> The cpu's supply regulator is specified at the board level, hence we
> need to add a label to it to reference it without replicating the whole
> tree structure.

Thanks for clarifying, was confused based on the commit log.

-- 
Regards,
Sudeep