linux-kernel - Re: [PATCH 1/2] dt: bindings: lp5024: Introduce the lp5024 and lp5018 RGB driver

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Date:   Mon, 31 Dec 2018 12:54:21 -0600
From:   Dan Murphy <dmurphy@...com>
To:     Rob Herring <robh@...nel.org>
CC:     <jacek.anaszewski@...il.com>, <pavel@....cz>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-leds@...r.kernel.org>
Subject: Re: [PATCH 1/2] dt: bindings: lp5024: Introduce the lp5024 and lp5018
 RGB driver

Rob

On 12/28/18 5:53 PM, Rob Herring wrote:
> On Wed, Dec 19, 2018 at 10:26:25AM -0600, Dan Murphy wrote:
>> Introduce the bindings for the Texas Instruments LP5024 and the LP5018
>> RGB LED device driver.  The LP5024/18 can control RGB LEDs individually
>> or as part of a control bank group.  These devices have the ability
>> to adjust the mixing control for the RGB LEDs to obtain different colors
>> independent of the overall brightness of the LED grouping.
>>
>> Datasheet:
>> http://www.ti.com/lit/ds/symlink/lp5024.pdf
>>
>> Signed-off-by: Dan Murphy <dmurphy@...com>
>> ---
>>  .../devicetree/bindings/leds/leds-lp5024.txt  | 63 +++++++++++++++++++
>>  1 file changed, 63 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/leds/leds-lp5024.txt
>>
>> diff --git a/Documentation/devicetree/bindings/leds/leds-lp5024.txt b/Documentation/devicetree/bindings/leds/leds-lp5024.txt
>> new file mode 100644
>> index 000000000000..9567aa6f7813
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/leds/leds-lp5024.txt
>> @@ -0,0 +1,63 @@
>> +* Texas Instruments - LP5024/18 RGB LED driver
>> +
>> +The LM3692x is an ultra-compact, highly efficient,
>> +white-LED driver designed for LCD display backlighting.
> 
> Leftover copy-n-paste?
> 

ACK
I have this updated for v2.

>> +
>> +The main difference between the LP5024 and L5018 is the number of
>> +RGB LEDs they support.  The LP5024 supports twenty four strings while the
>> +LP5018 supports eighteen strings.
>> +
>> +Required properties:
>> +	- compatible:
>> +		"ti,lp5018"
>> +		"ti,lp5024"
>> +	- reg :  I2C slave address
>> +	- #address-cells : 1
>> +	- #size-cells : 0
>> +
>> +Optional properties:
>> +	- enable-gpios : gpio pin to enable/disable the device.
>> +	- vled-supply : LED supply
>> +
>> +Required child properties:
>> +	- reg : Is the child node iteration.
>> +	- led-sources : LP5024 - 0 - 7
>> +			LP5018 - 0 - 5
>> +			Declares the LED string or strings that the child node
>> +			will control.  If ti,control-bank is set then this
>> +			property will contain multiple LED IDs.
>> +
>> +Optional child properties:
>> +	- label : see Documentation/devicetree/bindings/leds/common.txt
>> +	- linux,default-trigger :
>> +	   see Documentation/devicetree/bindings/leds/common.txt
>> +	- ti,control-bank : Indicates that the LED strings declared in the
>> +			    led-sources property are grouped within a control
>> +			    bank for brightness and mixing control.
>> +
>> +Example:
>> +
>> +led-controller@28 {
>> +	compatible = "ti,lp5024";
>> +	reg = <0x28>;
>> +	#address-cells = <1>;
>> +	#size-cells = <0>;
>> +
>> +	enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
>> +	vled-supply = <&vbatt>;
>> +
>> +	led@0 {
>> +		reg = <0>;
>> +		led-sources = <1>;
>> +	};
>> +
>> +	led@1 {
>> +		reg = <1>;
>> +		led-sources = <0 6>;
>> +		ti,control-bank;
>> +	};
>> +
>> +}
>> +
>> +For more product information please see the link below:
>> +http://www.ti.com/lit/ds/symlink/lp5024.pdf
>> -- 
>> 2.20.0.rc2.7.g965798d1f2
>>


-- 
------------------
Dan Murphy