linux-kernel - Re: [PATCH v6 1/2] dt: bindings: lm3601x: Introduce the lm3601x driver

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Date:   Tue, 15 May 2018 23:13:38 +0200
From:   Jacek Anaszewski <jacek.anaszewski@...il.com>
To:     Dan Murphy <dmurphy@...com>, robh+dt@...nel.org,
        mark.rutland@....com, pavel@....cz
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-leds@...r.kernel.org
Subject: Re: [PATCH v6 1/2] dt: bindings: lm3601x: Introduce the lm3601x
 driver

Hi Dan,

Thanks for the update.

On 05/15/2018 05:43 PM, Dan Murphy wrote:
> Introduce the device tree bindings for the lm3601x
> family of LED torch, flash and IR drivers.
> 
> Signed-off-by: Dan Murphy <dmurphy@...com>
> ---
> 
> v6 - Removed multiple led child nodes, fixed example to display micro ranges
> for corresponding child nodes and added led-sources to define the current driver -
> https://patchwork.kernel.org/patch/10392121/
> 
> v5 - No changes - https://patchwork.kernel.org/patch/10391743/
> v4 - Added " " around "=", changed strobe to flash on label, removed "support and
> register" comment and change ir lable to ir:torch - See v2 patchworks for comments
> v3 - Removed wildcard compatible - https://patchwork.kernel.org/patch/10386241/
> v2 - No changes - https://patchwork.kernel.org/patch/10384587/
> 
>   .../devicetree/bindings/leds/leds-lm3601x.txt | 47 +++++++++++++++++++
>   1 file changed, 47 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/leds/leds-lm3601x.txt
> 
> diff --git a/Documentation/devicetree/bindings/leds/leds-lm3601x.txt b/Documentation/devicetree/bindings/leds/leds-lm3601x.txt
> new file mode 100644
> index 000000000000..27930a89e9a5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/leds/leds-lm3601x.txt
> @@ -0,0 +1,47 @@
> +* Texas Instruments - lm3601x Single-LED Flash Driver
> +
> +The LM3601X are ultra-small LED flash drivers that
> +provide a high level of adjustability.
> +
> +Required properties:
> +	- compatible : Can be one of the following
> +		"ti,lm36010"
> +		"ti,lm36011"
> +	- reg : I2C slave address
> +	- #address-cells : 1
> +	- #size-cells : 0
> +
> +Required child properties:
> +	- reg : 0
> +	- led-sources:	0 - Indicates a IR mode
> +			1 - Indicates a Torch (white LED) mode

You don't need led-sources at all. Please use reg as in
the previous version. led-sources is useful for describing
more complex arrangements. Here reg will do.

> +
> +Required properties for flash LED child nodes:
> +	See Documentation/devicetree/bindings/leds/common.txt
> +	- flash-max-microamp : Range from 11mA -> 1.5A
> +	- flash-max-timeout-us : Range from 40ms -> 1600ms
> +	- led-max-microamp : Range from 2.4mA -> 376mA

Please give also a step in the format like below
(taken from max77693):

	Valid values: 62500 - 1000000, step by 62500 (rounded down)


> +
> +Optional child properties:
> +	- label : see Documentation/devicetree/bindings/leds/common.txt
> +
> +Example:
> +led-controller@64 {
> +	compatible = "ti,lm36010";
> +	#address-cells = <1>;
> +	#size-cells = <0>;
> +	reg = <0x64>;
> +
> +	led@0 {
> +		reg = <0>;
> +		label = "white:torch";
> +		led-max-microamp = <376000>;
> +		flash-max-microamp = <1500000>;
> +		flash-max-timeout-us = <1600000>;
> +		led-sources = <1>;
> +	};
> +}
> +
> +For more product information please see the links below:
> +http://www.ti.com/product/LM36010
> +http://www.ti.com/product/LM36011
> 

-- 
Best regards,
Jacek Anaszewski