linux-kernel - Re: [PATCH v3 1/2] staging: Introduce NVIDIA Tegra20 video decoder driver

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Date:   Thu, 19 Oct 2017 15:52:42 -0500
From:   Rob Herring <robh@...nel.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Stephen Warren <swarren@...dotorg.org>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
        devel@...verdev.osuosl.org,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 1/2] staging: Introduce NVIDIA Tegra20 video decoder driver

On Tue, Oct 17, 2017 at 4:26 PM, Dmitry Osipenko <digetx@...il.com> wrote:
> On 18.10.2017 00:13, Rob Herring wrote:
>> On Tue, Oct 17, 2017 at 3:24 PM, Thierry Reding
>> <thierry.reding@...il.com> wrote:
>>> On Tue, Oct 17, 2017 at 03:13:54PM -0500, Rob Herring wrote:
>>> [...]
>>>>> diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-vde.txt b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-vde.txt
>>> [...]
>>>>> +- resets : Must contain an entry for each entry in reset-names.
>>>>> +  See ../reset/reset.txt for details.
>>>>> +- reset-names : Must include the following entries:
>>>>> +  - vde
>>>>
>>>> -names is pointless when there is only one.
>>>
>>> I'd prefer to keep it. In the past we occasionally had to add clocks or
>>> resets to a device tree node where only one had been present (and hence
>>> no -names property) and that caused some awkwardness because verbiage
>>> had to be added to the bindings that clarified that one particular entry
>>> (the original one) always had to come first.
>>
>> The order should be specified regardless of -names and the original
>> one has to come first if you add any. That's not awkwardness, but how
>> bindings work.
>
> Probably it would be okay to remove '-names' from the binding doc, but keep them
> in the actual DT, wouldn't it?

No. Then where are the names documented?

Rob