linux-kernel - Re: [PATCH] gpio: Device tree support for LPC32xx

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Date:	Wed, 04 Apr 2012 01:52:23 +0200
From:	Roland Stigge <stigge@...com.de>
To:	Grant Likely <grant.likely@...retlab.ca>
CC:	arm@...nel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linus.walleij@...ricsson.com
Subject: Re: [PATCH] gpio: Device tree support for LPC32xx

On 04/04/12 01:39, Roland Stigge wrote:
> ===============================================================
> Error requesting gpio 50
> ...
> gpiochip_add: registered GPIOs 0 to 7 on device: gpio_p0
> gpiochip_add: registered GPIOs 8 to 31 on device: gpio_p1
> gpiochip_add: registered GPIOs 32 to 44 on device: gpio_p2
> gpiochip_add: registered GPIOs 45 to 50 on device: gpio_p3
> gpiochip_add: registered GPIOs 51 to 78 on device: gpi_p3
> gpiochip_add: registered GPIOs 79 to 102 on device: gpo_p3
> ===============================================================
> 
> Seems to be caused by this device tree:
> 
>         leds {
>                 compatible = "gpio-leds";
>                 led0 {  
>                         gpios = <&gpo_p3 1 1>; /* GPO_P3 1, GPIO 80, active low */
>                         linux,default-trigger = "heartbeat";
>                         default-state = "keep";
>                 };
>         };

No, it was "another" 50 (decimal, not hex). :-) Was caused by old early
board init code, eliminated anyway.

Thanks,

Roland
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