linux-kernel - Re: [RFC PATCH v1 1/2] dt-bindings: pwm: rockchip: add interrupts property

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Date:   Fri, 30 Sep 2022 14:55:24 -0500
From:   Rob Herring <robh@...nel.org>
To:     Johan Jonker <jbx6244@...il.com>
Cc:     linux-pwm@...r.kernel.org, thierry.reding@...il.com,
        linux-rockchip@...ts.infradead.org, u.kleine-koenig@...gutronix.de,
        krzysztof.kozlowski+dt@...aro.org, wxt@...k-chips.com,
        linux-kernel@...r.kernel.org, heiko@...ech.de, robh+dt@...nel.org,
        devicetree@...r.kernel.org, kever.yang@...k-chips.com,
        sebastian.reichel@...labora.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC PATCH v1 1/2] dt-bindings: pwm: rockchip: add interrupts
 property

On Thu, 29 Sep 2022 16:04:00 +0200, Johan Jonker wrote:
> The Rockchip SoCs have 4 or more built-in PWM channels.
> 
> Configurable to operate in capture mode.
> Measures the high/low polarity effective cycles of this input waveform
> Generates a single interrupt at the transition of input waveform polarity
> 
> Configurable to operate in continuous mode or one-shot mode.
> One-shot operation will produce N + 1 periods of the waveform,
> where N is the repeat counter value, and generates a single interrupt at
> the end of operation.
> Continuous mode generates the waveform continuously and
> do not generates any interrupts.
> 
> Older SoCs have an interrupt for each node.
> Newer models share an interrupt.
> 
> Add interrupts property to the pwm-rockchip.yaml file.
> DT describes hardware. Rockchip PWM driver support for
> interrupts might not available.
> 
> Signed-off-by: Johan Jonker <jbx6244@...il.com>
> ---
>  Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml | 3 +++
>  1 file changed, 3 insertions(+)
> 

Acked-by: Rob Herring <robh@...nel.org>