diff --git a/drivers/video/backlight-pwm.c b/drivers/video/backlight-pwm.c
index ec35bd1..997235a 100644
--- a/drivers/video/backlight-pwm.c
+++ b/drivers/video/backlight-pwm.c
@@ -206,6 +206,7 @@
 
 	pwm_backlight->period = pwm_get_period(pwm_backlight->pwm);
 
+	pwm_backlight->backlight.slew_time_ms = 100;
 	pwm_backlight->backlight.brightness_set = backlight_pwm_set;
 	pwm_backlight->backlight.node = dev->device_node;
 
diff --git a/drivers/video/backlight.c b/drivers/video/backlight.c
index 09c0e47..30d52fc 100644
--- a/drivers/video/backlight.c
+++ b/drivers/video/backlight.c
@@ -15,6 +15,15 @@
 	if (brightness == bl->brightness_cur)
 		return 0;
 
+	if (!bl->slew_time_ms) {
+		ret = bl->brightness_set(bl, brightness);
+		if (ret)
+			return ret;
+
+		bl->brightness_cur = bl->brightness = brightness;
+		return 0;
+	}
+
 	if (brightness > bl->brightness_cur)
 		step = 1;
 	else
@@ -34,10 +43,9 @@
 		if (i == brightness)
 			break;
 
-		udelay(100000 / num_steps);
+		udelay(bl->slew_time_ms * 1000 / num_steps);
 	}
 
-
 	bl->brightness_cur = bl->brightness = brightness;
 
 	return ret;
@@ -72,6 +80,8 @@
 
 	dev_add_param_uint32(&bl->dev, "brightness", backlight_brightness_set,
 			NULL, &bl->brightness, "%d", bl);
+	dev_add_param_uint32(&bl->dev, "slew_time_ms", NULL, NULL,
+			     &bl->slew_time_ms, "%d", NULL);
 
 	list_add_tail(&bl->list, &backlights);
 
diff --git a/include/video/backlight.h b/include/video/backlight.h
index 8dc49dc..afa384c 100644
--- a/include/video/backlight.h
+++ b/include/video/backlight.h
@@ -7,6 +7,7 @@
 	int brightness_cur;
 	int brightness_max;
 	int brightness_default;
+	int slew_time_ms; /* time to stretch brightness changes */
 	int (*brightness_set)(struct backlight_device *, int brightness);
 	struct list_head list;
 	struct device_d dev;