2020-11-12 16:41:47

by Clemens Gruber

Subject: [PATCH] dt-bindings: pwm: pca9685: add staggered-outputs property

The pca9685 driver supports a new staggered-outputs property for reduced
current surges and EMI. This adds documentation for the new DT property.

Signed-off-by: Clemens Gruber <[email protected]>
---
Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt | 2 ++
1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt b/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt
index f21b55c95738..911bbb65984e 100644
--- a/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt
+++ b/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt
@@ -12,6 +12,8 @@ Optional properties:
- invert (bool): boolean to enable inverted logic
- open-drain (bool): boolean to configure outputs with open-drain structure;
if omitted use totem-pole structure
+ - staggered-outputs (bool): boolean to enable staggered output ON times to
+ minimize current surges and EMI

Example:

--
2.29.2

2020-12-07 18:53:46

by Rob Herring (Arm)

Subject: Re: [PATCH] dt-bindings: pwm: pca9685: add staggered-outputs property

On Thu, Nov 12, 2020 at 05:39:31PM +0100, Clemens Gruber wrote:
> The pca9685 driver supports a new staggered-outputs property for reduced
> current surges and EMI. This adds documentation for the new DT property.
>
> Signed-off-by: Clemens Gruber <[email protected]>
> ---
> Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt b/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt
> index f21b55c95738..911bbb65984e 100644
> --- a/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt
> +++ b/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt
> @@ -12,6 +12,8 @@ Optional properties:
> - invert (bool): boolean to enable inverted logic
> - open-drain (bool): boolean to configure outputs with open-drain structure;
> if omitted use totem-pole structure
> + - staggered-outputs (bool): boolean to enable staggered output ON times to
> + minimize current surges and EMI

Needs a vendor prefix.

>
> Example:
>
> --
> 2.29.2
>