linux-kernel - Re: [PATCH] dt-bindings: pwm: fix nodename pattern

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Date:   Thu, 12 Dec 2019 08:16:47 +0000
From:   Benjamin GAIGNARD <benjamin.gaignard@...com>
To:     Rob Herring <robh+dt@...nel.org>
CC:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        "Mark Rutland" <mark.rutland@....com>,
        Linux PWM List <linux-pwm@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: pwm: fix nodename pattern


On 12/11/19 8:52 PM, Rob Herring wrote:
> On Wed, Dec 11, 2019 at 9:00 AM Benjamin Gaignard
> <benjamin.gaignard@...com> wrote:
>> Typical pwm nodes should be named pwm@....
>> The pattern shouldn't match nodes named pwm-xxx to avoid
>> conflicts with pinmux or pwm-fan nodes.
> It only matches pwm-$(a-hex-number), not any string, so that shouldn't
> be a problem. This is needed for things like GPIO based devices (not
> just PWMs) which don't have any address.
>
> Pinmux nodes are going to need to adopt some sort of standard pattern
> we can match on.
I have push a patch to stop using '@' and '_' in pinmux groups names:
https://lore.kernel.org/patchwork/patch/1162591/
It remove the warnings when compiling the devicetre with W=12 but pwm.yaml
complain because pwm pinmux is named pwm-1.

How can I solve these issues at the same time ?

Benjamin

>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...com>
>> ---
>>   Documentation/devicetree/bindings/pwm/pwm.yaml | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/pwm/pwm.yaml b/Documentation/devicetree/bindings/pwm/pwm.yaml
>> index fa4f9de92090..29b86886c282 100644
>> --- a/Documentation/devicetree/bindings/pwm/pwm.yaml
>> +++ b/Documentation/devicetree/bindings/pwm/pwm.yaml
>> @@ -11,7 +11,7 @@ maintainers:
>>
>>   properties:
>>     $nodename:
>> -    pattern: "^pwm(@.*|-[0-9a-f])*$"
>> +    pattern: "^pwm(@.*[0-9a-f])*$"
>>
>>     "#pwm-cells":
>>       description:
>> --
>> 2.15.0
>>