2019-12-11 15:02:54

by Benjamin GAIGNARD

[permalink] [raw]
Subject: [PATCH] dt-bindings: pwm: fix nodename pattern

Typical pwm nodes should be named pwm@xxx.
The pattern shouldn't match nodes named pwm-xxx to avoid
conflicts with pinmux or pwm-fan nodes.

Signed-off-by: Benjamin Gaignard <[email protected]>
---
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


2019-12-11 19:54:47

by Rob Herring

[permalink] [raw]
Subject: Re: [PATCH] dt-bindings: pwm: fix nodename pattern

On Wed, Dec 11, 2019 at 9:00 AM Benjamin Gaignard
<[email protected]> wrote:
>
> Typical pwm nodes should be named pwm@xxx.
> 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.

> Signed-off-by: Benjamin Gaignard <[email protected]>
> ---
> 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
>

2019-12-12 08:18:06

by Benjamin GAIGNARD

[permalink] [raw]
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
> <[email protected]> wrote:
>> Typical pwm nodes should be named pwm@xxx.
>> 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 <[email protected]>
>> ---
>> 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
>>

2019-12-12 19:08:33

by Rob Herring

[permalink] [raw]
Subject: Re: [PATCH] dt-bindings: pwm: fix nodename pattern

On Thu, Dec 12, 2019 at 2:16 AM Benjamin GAIGNARD
<[email protected]> wrote:
>
>
> On 12/11/19 8:52 PM, Rob Herring wrote:
> > On Wed, Dec 11, 2019 at 9:00 AM Benjamin Gaignard
> > <[email protected]> wrote:
> >> Typical pwm nodes should be named pwm@xxx.
> >> 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 ?

Name the nodes *-pins or *-pins-[0-9]. You're probably going to need
some pattern anyways when you do a pinmux schema.

Rob

2019-12-13 11:12:57

by Benjamin GAIGNARD

[permalink] [raw]
Subject: Re: [PATCH] dt-bindings: pwm: fix nodename pattern


On 12/12/19 8:07 PM, Rob Herring wrote:
> On Thu, Dec 12, 2019 at 2:16 AM Benjamin GAIGNARD
> <[email protected]> wrote:
>>
>> On 12/11/19 8:52 PM, Rob Herring wrote:
>>> On Wed, Dec 11, 2019 at 9:00 AM Benjamin Gaignard
>>> <[email protected]> wrote:
>>>> Typical pwm nodes should be named pwm@xxx.
>>>> 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 ?
> Name the nodes *-pins or *-pins-[0-9]. You're probably going to need
> some pattern anyways when you do a pinmux schema.
+ Alex because that impact pin node pattern in st,stm32-pinctrl.yaml

Benjamin

> Rob