linux-kernel - Re: [PATCH V1 2/5] backlight: qcom-wled: Add support for WLED4 peripheral

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Message-ID: <20180514165755.GB27984@xo-6d-61-c0.localdomain>
Date:   Mon, 14 May 2018 18:57:55 +0200
From:   Pavel Machek <pavel@....cz>
To:     Kiran Gunda <kgunda@...eaurora.org>
Cc:     bjorn.andersson@...aro.org, Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-fbdev@...r.kernel.org, linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH V1 2/5] backlight: qcom-wled: Add support for WLED4
 peripheral

Hi!

> WLED4 peripheral is present on some PMICs like pmi8998
> and pm660l. It has a different register map and also
> configurations are different. Add support for it.
> 
> Signed-off-by: Kiran Gunda <kgunda@...eaurora.org>
> ---
>  .../bindings/leds/backlight/qcom-wled.txt          | 172 ++++-
>  drivers/video/backlight/qcom-wled.c                | 749 +++++++++++++++------
>  2 files changed, 696 insertions(+), 225 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
> index fb39e32..0ceffa1 100644
> --- a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
> +++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt
> @@ -1,30 +1,129 @@
>  Binding for Qualcomm Technologies, Inc. WLED driver
>  
> -Required properties:
> -- compatible: should be "qcom,pm8941-wled"
> -- reg: slave address
> -
> -Optional properties:
> -- default-brightness: brightness value on boot, value from: 0-4095
> -	default: 2048
> +- compatible
> +	Usage:        required
> +	Value type:   <string>
> +	Definition:   should be "qcom,pm8941-wled" or "qcom,pmi8998-wled".
> +		      or "qcom,pm660l-wled".
> +
> +- reg
> +	Usage:        required
> +	Value type:   <prop encoded array>
> +	Definition:   Base address of the WLED modules.

I'm not sure if this change of format is good idea here...

									Pavel