linux-kernel - Re: [PATCH v2 1/7] dt-bindings: backlight: qcom-wled: Document ovp values for PMI8994

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Message-ID: <45a2b510-c825-4191-975a-1389f4f18903@oss.qualcomm.com>
Date: Thu, 8 Jan 2026 09:54:32 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Barnabás Czémán <barnabas.czeman@...nlining.org>,
        Lee Jones <lee@...nel.org>, Daniel Thompson <danielt@...nel.org>,
        Jingoo Han <jingoohan1@...il.com>, Pavel Machek <pavel@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Kiran Gunda <quic_kgunda@...cinc.com>, Helge Deller <deller@....de>,
        Luca Weiss <luca@...aweiss.eu>, Konrad Dybcio <konradybcio@...nel.org>,
        Eugene Lepshy <fekz115@...il.com>,
        Gianluca Boiano <morf3089@...il.com>,
        Alejandro Tafalla <atafalla@...on.com>
Cc: dri-devel@...ts.freedesktop.org, linux-leds@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Daniel Thompson <daniel.thompson@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-fbdev@...r.kernel.org
Subject: Re: [PATCH v2 1/7] dt-bindings: backlight: qcom-wled: Document ovp
 values for PMI8994

On 1/8/26 4:43 AM, Barnabás Czémán wrote:
> Document ovp values supported by wled found in PMI8994.
> 
> Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

I reviewed a version of this that said PMI8950, which is very much
not the same..

Let me try and get some more docs to confirm or deny what you're
saying..

Konrad

> Signed-off-by: Barnabás Czémán <barnabas.czeman@...nlining.org>
> ---
>  .../bindings/leds/backlight/qcom-wled.yaml         | 22 ++++++++++++++++++++--
>  1 file changed, 20 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
> index a8490781011d..19166186a1ff 100644
> --- a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
> +++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.yaml
> @@ -98,8 +98,8 @@ properties:
>      description: |
>        Over-voltage protection limit. This property is for WLED4 only.
>      $ref: /schemas/types.yaml#/definitions/uint32
> -    enum: [ 18100, 19600, 29600, 31100 ]
> -    default: 29600
> +    minimum: 17800
> +    maximum: 31100
>  
>    qcom,num-strings:
>      description: |
> @@ -239,6 +239,24 @@ allOf:
>            minimum: 0
>            maximum: 4095
>  
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: qcom,pmi8994-wled
> +
> +    then:
> +      properties:
> +        qcom,ovp-millivolt:
> +          enum: [ 17800, 19400, 29500, 31000 ]
> +          default: 29500
> +
> +    else:
> +      properties:
> +        qcom,ovp-millivolt:
> +          enum: [ 18100, 19600, 29600, 31100 ]
> +          default: 29600
> +
>  required:
>    - compatible
>    - reg
>