From: Rob Herring <robh@kernel.org>
To: Johan Jonker <jbx6244@gmail.com>
Cc: linux-pwm@vger.kernel.org, thierry.reding@gmail.com,
linux-rockchip@lists.infradead.org,
u.kleine-koenig@pengutronix.de,
krzysztof.kozlowski+dt@linaro.org, wxt@rock-chips.com,
linux-kernel@vger.kernel.org, heiko@sntech.de,
robh+dt@kernel.org, devicetree@vger.kernel.org,
kever.yang@rock-chips.com, sebastian.reichel@collabora.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC PATCH v1 1/2] dt-bindings: pwm: rockchip: add interrupts property
Date: Fri, 30 Sep 2022 14:55:24 -0500 [thread overview]
Message-ID: <166456772354.777288.8174901492888529492.robh@kernel.org> (raw)
In-Reply-To: <94bcb278-7bb9-d173-497c-fe12682c4a17@gmail.com>
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@gmail.com>
> ---
> Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml | 3 +++
> 1 file changed, 3 insertions(+)
>
Acked-by: Rob Herring <robh@kernel.org>
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next prev parent reply other threads:[~2022-09-30 19:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-29 14:04 [RFC PATCH v1 1/2] dt-bindings: pwm: rockchip: add interrupts property Johan Jonker
2022-09-30 19:55 ` Rob Herring [this message]
2022-10-03 7:49 ` Johan Jonker
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