On Tue, Jan 20, 2015 at 10:09 AM, Jacek Anaszewski
<j.anaszewski@xxxxxxxxxxx> wrote:
> On 01/16/2015 04:52 PM, Jacek Anaszewski wrote:
>>
>> On 01/16/2015 02:48 PM, Rob Herring wrote:
[...]
>>> You may want to add something like led-output-cnt or led-driver-cnt in
>>> the parent so you know the max list size.
>>
>>
>> Why should we need this? The number of current outputs exposed by the
>> device is fixed and can be specified in a LED device bindings
>> documentation.
>>
>
> OK. The led-output-cnt property should be put in each sub-node, as the
> number of the current outputs each LED can be connected to is variable.
Sorry, I meant this for the parent node meaning how many outputs the
driver IC has. I did say maybe because you may always know this. It
can make it easier to allocate memory for led-sources knowing the max
size up front.
Rob
>
> New version:
>
> Optional properties for child nodes:
> +led-sources-cnt : Number of device current outputs the LED is connected to.
> +- led-sources : List of device current outputs the LED is connected to. The
> + outputs are identified by the numbers that must be defined
> + in the LED device binding documentation.
> - label : The label for this LED. If omitted, the label is
> taken from the node name (excluding the unit address).
>
> @@ -33,7 +47,9 @@ system-status {
>
> camera-flash {
> label = "Flash";
> + led-sources-cnt = <2>;
> + led-sources = <0>, <1>;
> max-microamp = <50000>;
> flash-max-microamp = <320000>;
> flash-timeout-us = <500000>;
> -}
> +};
>
>
> --
> Best Regards,
> Jacek Anaszewski
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