linux-kernel - Re: [PATCH v5 02/16] dt-bindings: leds: ROHM BD71282 PMIC LED driver

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Date:   Fri, 22 Nov 2019 17:00:11 -0600
From:   Rob Herring <robh@...nel.org>
To:     Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Cc:     mazziesaccount@...il.com, Lee Jones <lee.jones@...aro.org>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Pavel Machek <pavel@....cz>, Dan Murphy <dmurphy@...com>,
        Mark Rutland <mark.rutland@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Nicholas Mc Guire <hofrat@...dl.org>,
        Phil Edworthy <phil.edworthy@...esas.com>,
        linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-rtc@...r.kernel.org
Subject: Re: [PATCH v5 02/16] dt-bindings: leds: ROHM BD71282 PMIC LED driver

On Mon, Nov 18, 2019 at 08:54:25AM +0200, Matti Vaittinen wrote:
> Document ROHM BD71828 PMIC LED driver device tree bindings.
> 
> Signed-off-by: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
> ---
> 
> No changes from v4
> 
>  .../bindings/leds/rohm,bd71828-leds.yaml      | 49 +++++++++++++++++++
>  1 file changed, 49 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/leds/rohm,bd71828-leds.yaml
> 
> diff --git a/Documentation/devicetree/bindings/leds/rohm,bd71828-leds.yaml b/Documentation/devicetree/bindings/leds/rohm,bd71828-leds.yaml
> new file mode 100644
> index 000000000000..e72c9ae0fc2a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/rohm,bd71828-leds.yaml
> @@ -0,0 +1,49 @@
> +# SPDX-License-Identifier: GPL-2.0-only

Dual license please.

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/leds/rohm,bd71828-leds.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ROHM BD71828 Power Management Integrated Circuit LED driver
> +
> +maintainers:
> +  - Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
> +
> +description: |
> +  This module is part of the ROHM BD71828 MFD device. For more details
> +  see Documentation/devicetree/bindings/mfd/rohm,bd71828-pmic.yaml.
> +
> +  The LED controller is represented as a sub-node of the PMIC node on the device
> +  tree.
> +
> +  The device has two LED outputs referred as GRNLED and AMBLED in data-sheet.

Since you include this from the MFD schema, add a 'select: false' here 
or this node gets checked twice.

> +
> +properties:
> +  compatible:
> +    const: rohm,bd71828-leds
> +
> +patternProperties:
> +  "^led-[1-2]$":
> +    type: object
> +    description:
> +      Properties for a single LED.
> +    properties:
> +      #$ref: "common.yaml#"

Will need to be:

allOf:
  - $ref: ...

> +      rohm,led-compatible:
> +        description: LED identification string
> +        allOf:
> +          - $ref: "/schemas/types.yaml#/definitions/string"
> +          - oneOf:
> +            - const: bd71828-ambled
> +            - const: bd71828-grnled

Use enum rather than oneOf+const

> +      function:
> +        description:
> +          Purpose of LED as defined in dt-bindings/leds/common.h
> +        $ref: "/schemas/types.yaml#/definitions/string"
> +      color:
> +        description:
> +          LED colour as defined in dt-bindings/leds/common.h
> +        $ref: "/schemas/types.yaml#/definitions/uint32"
> +
> +required:
> +  - compatible
> -- 
> 2.21.0
> 
> 
> -- 
> Matti Vaittinen, Linux device drivers
> ROHM Semiconductors, Finland SWDC
> Kiviharjunlenkki 1E
> 90220 OULU
> FINLAND
> 
> ~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
> Simon says - in Latin please.
> ~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
> Thanks to Simon Glass for the translation =]