linux-kernel - Re: [RFC PATCH 4/7] dt-bindings: pwm: add description of PWM polarity

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Date:   Wed, 18 Mar 2020 01:01:15 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Oleksandr Suvorov <oleksandr.suvorov@...adex.com>
Cc:     devicetree@...r.kernel.org, linux-pwm@...r.kernel.org,
        Paul Barker <pbarker@...sulko.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Igor Opaniuk <igor.opaniuk@...adex.com>,
        Philippe Schenker <philippe.schenker@...adex.com>,
        Rob Herring <robh+dt@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 4/7] dt-bindings: pwm: add description of PWM polarity

Hi Oleksandr,

Thank you for the patch.

On Tue, Mar 17, 2020 at 02:32:28PM +0200, Oleksandr Suvorov wrote:
> Move the description of the PWM signal polarity from
> <linux/pwm.h>, prepare for removing the polarity
> definition from <linux/pwm.h>.
> 
> Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@...adex.com>
> ---
> 
>  include/dt-bindings/pwm/pwm.h | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/include/dt-bindings/pwm/pwm.h b/include/dt-bindings/pwm/pwm.h
> index 6b58caa6385e..c07da2088a61 100644
> --- a/include/dt-bindings/pwm/pwm.h
> +++ b/include/dt-bindings/pwm/pwm.h
> @@ -10,7 +10,16 @@
>  #ifndef _DT_BINDINGS_PWM_PWM_H
>  #define _DT_BINDINGS_PWM_PWM_H
>  
> +/**
> + * a high signal for the duration of the duty-cycle, followed by a low signal
> + * for the remainder of the pulse period.
> + */

Last time I checked, kernedoc didn't support documenting macros (enums
are supported).

>  #define PWM_POLARITY_NORMAL			0
> +
> +/**
> + * a low signal for the duration of the duty-cycle, followed by a high signal
> + * for the remainder of the pulse period.
> + */
>  #define PWM_POLARITY_INVERTED			(1 << 0)
>  
>  #endif

-- 
Regards,

Laurent Pinchart