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

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Date:   Tue, 15 May 2018 10:25:55 +0530
From:   kgunda@...eaurora.org
To:     Pavel Machek <pavel@....cz>
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,
        linux-arm-msm-owner@...r.kernel.org
Subject: Re: [PATCH V1 2/5] backlight: qcom-wled: Add support for WLED4
 peripheral

On 2018-05-14 22:27, Pavel Machek wrote:
> 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
> --
This format is clean and easily readable. That's why I have moved to 
this format.
To avoid confusion, I will move out the existing properties 
(pm8941-wled.c) to other
patch. So that it will be easy to review.

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