Re: [PATCH 5/6] leds: pca963x: Inform the output that it is inverted

[Rob Herring]

On Tue, Apr 19, 2016 at 09:40:49AM +0200, Olliver Schinagl wrote:
> When leds are connected in a totem-pole configuration, they can be
> connected either in a active-high, or active-low manor. The driver
> currently always assumes active-high. This patch adds the
> 'nxp,inverted-out' boolean property to tell the driver that the leds
> are driven active-low, or rather, that the behavior is inverted to what
> is normally expected.

How do I know what is normally expected?

> Signed-off-by: Olliver Schinagl <oliver@xxxxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/leds/pca963x.txt |  1 +
>  drivers/leds/leds-pca963x.c                        | 20 +++++++++++++-------
>  include/linux/platform_data/leds-pca963x.h         |  1 +
>  3 files changed, 15 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/leds/pca963x.txt b/Documentation/devicetree/bindings/leds/pca963x.txt
> index dafbe99..7b23725 100644
> --- a/Documentation/devicetree/bindings/leds/pca963x.txt
> +++ b/Documentation/devicetree/bindings/leds/pca963x.txt
> @@ -6,6 +6,7 @@ Required properties:
>  Optional properties:
>  - nxp,totem-pole : use totem pole (push-pull) instead of open-drain (pca9632 defaults
>    to open-drain, newer chips to totem pole)
> +  nxp,inverted-out: the connected leds are active-low, default to active-high

Just state what mode you want: nxp,active-low

Rob