linux-kernel - Re: [PATCH 3/3] ARM: dts: vf610-colibri: Add backlight support

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Date:	Fri, 19 Sep 2014 15:57:35 +0530
From:	Bhuvanchandra DV <bhuvanchandra.dv@...adex.com>
To:	Shawn Guo <shawn.guo@...escale.com>
CC:	<stefan@...er.ch>, <linux@....linux.org.uk>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] ARM: dts: vf610-colibri: Add backlight support


On Thursday 18 September 2014 07:47 PM, Shawn Guo wrote:

> On Wed, Sep 17, 2014 at 01:46:30PM +0530, Bhuvanchandra DV wrote:
>> Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@...adex.com>
>> ---
>>  arch/arm/boot/dts/vf610-colibri-eval-v3.dts |    6 ++++++
>>  arch/arm/boot/dts/vf610-colibri.dtsi        |    7 +++++++
>>  2 files changed, 13 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/vf610-colibri-eval-v3.dts b/arch/arm/boot/dts/vf610-colibri-eval-v3.dts
>> index ba98039..f1988a0 100644
>> --- a/arch/arm/boot/dts/vf610-colibri-eval-v3.dts
>> +++ b/arch/arm/boot/dts/vf610-colibri-eval-v3.dts
>> @@ -52,3 +52,9 @@
>>  &pwm1 {
>>  	status = "okay";
>>  };
>> +
>> +&backlight {
>> +	brightness-levels = <0 4 8 16 32 64 128 255>;
>> +	default-brightness-level = <6>;
>> +	status  = "okay";
>> +};
>> diff --git a/arch/arm/boot/dts/vf610-colibri.dtsi b/arch/arm/boot/dts/vf610-colibri.dtsi
>> index 9bd1415..e725306 100644
>> --- a/arch/arm/boot/dts/vf610-colibri.dtsi
>> +++ b/arch/arm/boot/dts/vf610-colibri.dtsi
>> @@ -25,6 +25,13 @@
>>  		};
>>  	};
>>  
>> +	backlight: bl {
> I would suggest we name the node following the example in
> Documentation/devicetree/bindings/pwm/pwm.txt, i.e. bl: backlight.

Will update the node name to bl: backlight

>> +		compitable = "pwm-backlight";
>> +		pwms = <&pwm0 0 5000000 0>;
>> +		pwm-names = " backlight";
> Drop the leading space in the string.
>
> Shawn

Ok

>> +		status = "disabled";
>> +	};
>> +
>>  };
>>  
>>  &esdhc1 {
>> -- 
>> 1.7.9.5
>>

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