linux-kernel - Re: [PATCH v2 3/4] doc: dt: pwm: add binding for ChromeOS EC PWM

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Date:	Mon, 6 Jun 2016 08:36:31 -0500
From:	Rob Herring <robh@...nel.org>
To:	Brian Norris <briannorris@...omium.org>
Cc:	Lee Jones <lee.jones@...aro.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Olof Johansson <olof@...om.net>, linux-kernel@...r.kernel.org,
	Doug Anderson <dianders@...omium.org>,
	Brian Norris <computersforpeace@...il.com>,
	linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Stephen Barber <smbarber@...omium.org>,
	Javier Martinez Canillas <javier@....samsung.com>,
	Benson Leung <bleung@...omium.org>,
	Enric Balletbo <enric.balletbo@...labora.co.uk>,
	Randall Spangler <rspangler@...omium.org>,
	Shawn Nematbakhsh <shawnn@...omium.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Todd Broch <tbroch@...omium.org>,
	Gwendal Grignou <gwendal@...omium.org>,
	Tomeu Vizoso <tomeu.vizoso@...labora.com>
Subject: Re: [PATCH v2 3/4] doc: dt: pwm: add binding for ChromeOS EC PWM

On Thu, Jun 02, 2016 at 06:21:43PM -0700, Brian Norris wrote:
> The ChromeOS Embedded Controller can support controlling its attached
> PWMs via its host-command interface. The number of supported PWMs varies
> on a per-board basis, but we can autodetect this by checking the error
> codes, so we don't need an extra property for this. And because the EC
> only allows specifying the duty cycle and not the period, we don't
> specify the period via pwm-cells, and instead have only support 1 cell
> -- to specify the index.
> 
> Signed-off-by: Brian Norris <briannorris@...omium.org>
> ---
> v2: dropped the "google,max-pwms" property
> 
>  .../devicetree/bindings/pwm/google,cros-ec-pwm.txt | 23 ++++++++++++++++++++++
>  1 file changed, 23 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.txt

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