Re: [PATCH v5 4/6] counter: Add rockchip-pwm-capture driver

From: William Breathitt Gray <wbg@kernel.org>
To: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Cc: "William Breathitt Gray" <wbg@kernel.org>,
	"Uwe Kleine-König" <ukleinek@kernel.org>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
	"Conor Dooley" <conor+dt@kernel.org>,
	"Heiko Stuebner" <heiko@sntech.de>, "Lee Jones" <lee@kernel.org>,
	"Damon Ding" <damon.ding@rock-chips.com>,
	kernel@collabora.com, "Jonas Karlman" <jonas@kwiboo.se>,
	"Alexey Charkov" <alchark@gmail.com>,
	linux-rockchip@lists.infradead.org, linux-pwm@vger.kernel.org,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org,
	fabrice.gasnier@foss.st.com
Subject: Re: [PATCH v5 4/6] counter: Add rockchip-pwm-capture driver
Date: Sun,  3 May 2026 20:06:43 +0900	[thread overview]
Message-ID: <20260503110644.462016-1-wbg@kernel.org> (raw)
In-Reply-To: <q0kG3ZZyT92lQlYsvZD_qg@collabora.com>

On Mon, Apr 27, 2026 at 07:35:32PM +0200, Nicolas Frattaroli wrote:
> On Sunday, 26 April 2026 12:55:20 Central European Summer Time Damon Ding wrote:
> > BTW: Is there any user-space test tool similar to libpwm for the
> > counter subsystem?
> 
> I've tried looking for this as well, and couldn't find anything. If
> it exists then adding a mention of it to generic-counter.rst would
> be in order I think.

Fabrice Gasnier added a Counter chrdev userspace test application to
watch Counter events; it's at tools/counter/counter_watch_events.c if
you are interested in trying it out.

I do need to update generic-counter.rst to add a few new things we've
picked up over the years, so it is on my general to-do list.

William Breathitt Gray