linux-kernel - Re: [PATCH v2 3/3] leds: leds-pwm: Add device tree bindings

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Message-Id: <20121210223722.461773E08FB@localhost>
Date:	Mon, 10 Dec 2012 22:37:22 +0000
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Peter Ujfalusi <peter.ujfalusi@...com>
Cc:	Bryan Wu <cooloney@...il.com>, Richard Purdie <rpurdie@...ys.net>,
	linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org,
	Thierry Reding <thierry.reding@...onic-design.de>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH v2 3/3] leds: leds-pwm: Add device tree bindings

On Fri, 7 Dec 2012 15:04:51 +0100, Peter Ujfalusi <peter.ujfalusi@...com> wrote:
> On 12/07/2012 02:34 PM, Grant Likely wrote:
> > It really needs to look like this:
> > 
> > pwmleds {
> > 	compatible = "pwm-leds";
> > 	kpad {
> > 		label = "omap4::keypad";
> > 		max-brightness = <127>;
> > 		pwms = <&twl_pwm 0 7812500>;
> > 	};
> > 	charging {
> > 		label = "omap4:green:chrg";
> > 		max-brightness = <255>;
> > 		pwms = <&twl_pwmled 0 7812500>;
> > 	};
> > };
> 
> OK.
> So What we need to do is export the of_pwm_request() from drivers/pwm/core.c
> Client drivers us of_pwm_request(node, NULL); to get the pwm when booted with DT.
> Works fine on my setup this way and the DTS section looks just as you have
> described.
> Now I need to clean them up and resubmit.

Cool, thanks.

g.

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