linux-kernel - Re: [PATCH 1/2] dt-bindings: leds: ROHM BD2606MVV LED driver

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Message-ID: <20230406133357.45e48bd3@aktux>
Date:   Thu, 6 Apr 2023 13:33:57 +0200
From:   Andreas Kemnade <andreas@...nade.info>
To:     Matti Vaittinen <mazziesaccount@...il.com>
Cc:     pavel@....cz, lee@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-leds@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        hns@...delico.com
Subject: Re: [PATCH 1/2] dt-bindings: leds: ROHM BD2606MVV LED driver

Hi Matti,

On Thu, 6 Apr 2023 11:32:42 +0300
Matti Vaittinen <mazziesaccount@...il.com> wrote:

> Hi Andreas,
> 
> Thanks for the patch! Adding new support for devices is Much Appreciated!
> 
> On 4/6/23 09:08, Andreas Kemnade wrote:
> > Document ROHM BD2606MVV LED driver devicetree bindings.
> > 
> > Signed-off-by: Andreas Kemnade <andreas@...nade.info>
> > ---
> >   .../bindings/leds/rohm,bd2606mvv.yaml         | 76 +++++++++++++++++++
> >   1 file changed, 76 insertions(+)
> >   create mode 100644 Documentation/devicetree/bindings/leds/rohm,bd2606mvv.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/leds/rohm,bd2606mvv.yaml b/Documentation/devicetree/bindings/leds/rohm,bd2606mvv.yaml
> > new file mode 100644
> > index 0000000000000..6d4ddd8d31162
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/leds/rohm,bd2606mvv.yaml
> > @@ -0,0 +1,76 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/leds/rohm,bd2606mvv.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: BD2606MVV LED controller
> > +
> > +maintainers:
> > +  - Andreas Kemnade <andreas@...nade.info>
> > +
> > +description:
> > +  The BD2606 MVV is a programmable LED controller connected via I2C that can
> > +  drive 6 separate lines. Each of them can be individually switched on and off
> > +  but the brightness setting is shared between two of them.  
> 
> Maybe add a link to data-sheet?
> https://fscdn.rohm.com/en/products/databook/datasheet/ic/power/led_driver/bd2606mvv_1-e.pdf
> 
Maybe also (because it has the register description):
https://fscdn.rohm.com/en/products/databook/applinote/ic/power/led_driver/bd2606mvv_tsb_001_ug-e.pdf

> > +
> > +properties:
> > +  compatible:
> > +    const: rohm,bd2606mvv
> > +
> > +  reg:
> > +    description: I2C slave address of the controller.
> > +    maxItems: 1
> > +
> > +  "#address-cells":
> > +    const: 1
> > +
> > +  "#size-cells":
> > +    const: 0
> > +
> > +patternProperties:
> > +  "^led@[0-6]$":
> > +    type: object
> > +    $ref: common.yaml#
> > +    unevaluatedProperties: false
> > +
> > +    properties:
> > +      reg:
> > +        minimum: 0
> > +        maximum: 6
> > +
> > +    required:
> > +      - reg
> > +
> > +additionalProperties: false  
> 
> According to the data-sheet, BD2606 has an enable-pin. Should it be 
> visible in the bindings?
> 
yes, it should.

Regards,
Andreas