Hi,

On Fri, Aug 13, 2010 at 03:29:11PM +0530, Ravi Gupta wrote:
[...]

Thanks for the reply.
I had added the entries for gpio pin 9 for both controllers(I was not sure
with controller's pin is connected to LED, but now I know it is pin no. 233
i.e 224+9) in the mpc8377_rdb.dts file. Below is a portion of my dts file, I
have attached the complete dts file as attachment.

immr@e0000000 {

[...]

   * led@0 {
        compatible = "gpio-leds";
        label = "hdd";
        gpios = <&gpio1 9 0>;
    };

What kernel version you look at? Please see the latest kernel,
it has MCU GPIO LED nodes already, and you can just add some
additional nodes.

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=arch/powerpc/boot/dts/mpc8377_rdb.dts#l490

[...]

Also I have enabled drivers/leds/leds-gpio.c in my kernel. To test whether
the leds entires in dts file get attached to leds-gpio driver, I added
printks in the probe function of the driver.

static int gpio_led_probe(struct platform_device *pdev)
{
  struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
  struct gpio_led *cur_led;
  struct gpio_led_data *leds_data, *led_dat;
  int i, ret = 0;

  *printk(KERN_INFO "led: inside gpio_led_probe.\n");*

You have put the printk into the wrong function. It should
have been of_gpio_leds_probe():

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=drivers/leds/leds-gpio.c#l227

If you don't have that function then you use too old kernel.

Thanks,

-- 
Anton Vorontsov
email: cbouatmailru@gmail.com
irc://irc.freenode.net/bd2