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

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Date:	Fri, 7 Dec 2012 15:04:51 +0100
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	Grant Likely <grant.likely@...retlab.ca>
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 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.

-- 
Péter
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