linux-kernel - Re: [PATCH v2 2/2] dt-bindings: pinctrl: Add bindings for Awinic AW9523/AW9523B

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Date:   Thu, 14 Jan 2021 16:42:51 -0600
From:   Rob Herring <robh@...nel.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        konrad.dybcio@...ainline.org, marijn.suijten@...ainline.org,
        martin.botka@...ainline.org, phone-devel@...r.kernel.org,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v2 2/2] dt-bindings: pinctrl: Add bindings for Awinic AW9523/AW9523B

On Wed, Jan 13, 2021 at 6:30 AM AngeloGioacchino Del Regno
<angelogioacchino.delregno@...ainline.org> wrote:
>
> Il 13/01/21 03:41, Rob Herring ha scritto:
> > On Mon, Jan 11, 2021 at 07:29:28PM +0100, AngeloGioacchino Del Regno wrote:
> >> Add bindings for the Awinic AW9523/AW9523B I2C GPIO Expander driver.
> >>
> >> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...ainline.org>
> >> ---
> >>   .../pinctrl/awinic,aw9523-pinctrl.yaml        | 112 ++++++++++++++++++
> >>   1 file changed, 112 insertions(+)
> >>   create mode 100644 Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml
> >>
> >> diff --git a/Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml
> >> new file mode 100644
> >> index 000000000000..a705c05bb5a2
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/pinctrl/awinic,aw9523-pinctrl.yaml
> >> @@ -0,0 +1,112 @@
> >> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> >> +%YAML 1.2
> >> +---
> >> +$id: http://devicetree.org/schemas/pinctrl/awinic,aw9523-pinctrl.yaml#
> >> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> >> +
> >> +title: Awinic AW9523/AW9523B I2C GPIO Expander
> >> +
> >> +maintainers:
> >> +  - AngeloGioacchino Del Regno <angelogioacchino.delregno@...ainline.org>
> >> +
> >> +description: |
> >> +  The Awinic AW9523/AW9523B I2C GPIO Expander featuring 16 multi-function
> >> +  I/O, 256 steps PWM mode and interrupt support.
> >> +
> >> +properties:
> >> +  compatible:
> >> +    const: awinic,aw9523-pinctrl
> >> +
> >> +  reg:
> >> +    maxItems: 1
> >> +
> >> +  '#gpio-cells':
> >> +    description: |
> >> +      Specifying the pin number and flags, as defined in
> >> +      include/dt-bindings/gpio/gpio.h
> >> +    const: 2
> >> +
> >> +  gpio-controller: true
> >> +
> >> +  gpio-ranges:
> >> +    maxItems: 1
> >> +
> >> +  interrupt-controller: true
> >> +
> >> +  interrupts:
> >> +    maxItems: 1
> >> +    description: Specifies the INTN pin IRQ.
> >> +
> >> +  '#interrupt-cells':
> >> +    description:
> >> +      Specifies the PIN numbers and Flags, as defined in defined in
> >> +      include/dt-bindings/interrupt-controller/irq.h
> >> +    const: 2
> >> +
> >> +#PIN CONFIGURATION NODES
> >> +patternProperties:
> >> +  '^.*$':
> >> +    if:
> >> +      type: object
> >> +      $ref: "/schemas/pinctrl/pincfg-node.yaml"
> >> +    then:
> >
> > I wish people would stop copying this if/then hack...
> >
> > For new bindings, just name your nodes something sensible you can match
> > on like '-pins$'.
> >
> I always check the newest available yaml that I can find in the same
> folder before writing mine... in this case, it was sm8250-pinctrl.yaml
> and I thought that this was the accepted way, since.. that's.. the
> newest one.

Normally, that's a good strategy. Unfortunately, this one went in
without my review. There was supposed to be a follow-up to fix some of
the issues, but seems that never happened.

Rob