UClinux PPS driver

I still have no luck on the PPS client driver on my uClinux running on the NIOS2. Can anyone kindly point me to the right direction, since I am using a device tree and believe this doesn't support device tree, right? What do I need to add/modify so I can use a input GPIO as a source? I saw a google post to add this code to (?? an unknown) and then you need to call pps_init in the configuration routine (?? not sure what it mean)

add

/* PPS-GPIO platform data */

static struct pps_gpio_platform_data pps_gpio_info = {

.assert_falling_edge = false,

.capture_clear= false,

.gpio_pin=63,

.gpio_label="PPS",

};

static struct platform_device pps_gpio_device = {

.name = "pps-gpio",

.id = -1,

.dev = {

.platform_data = &pps_gpio_info

},

};

static void pps_init(int evm_id, int profile)

{

int err;

err = platform_device_register(&pps_gpio_device);

if (err) {

pr_warning("Could not register PPS_GPIO device");

}

}

Thanks in advance for any help