diff --git a/drivers/backlight/lm3697/ti_lm3697.h b/drivers/backlight/lm3697/ti_lm3697.h
index 357867a907de..03f5c5318c93 100644
--- a/drivers/backlight/lm3697/ti_lm3697.h
+++ b/drivers/backlight/lm3697/ti_lm3697.h
@@ -208,6 +208,9 @@ struct ti_lmu_bl {
 	/* Map type */
 	unsigned int map_type;
 
+	/* Align boost current to AW chip */
+	unsigned int led_current_align;
+
 	struct pwm_device *pwm;
 };
 
@@ -236,6 +239,11 @@ enum backlight_map_type {
 	LINEAR_TYPE
 };
 
+enum backlight_exp_current_align {
+	ALIGN_NONE,
+	ALIGN_AW99703
+};
+
 extern struct ti_lmu_bl_cfg lmu_bl_cfg[LMU_MAX_ID];
 extern int ti_lmu_backlight_device_init(void);
 extern void ti_lmu_backlight_exit(void);
diff --git a/drivers/backlight/lm3697/ti_lm3697_backlight.c b/drivers/backlight/lm3697/ti_lm3697_backlight.c
index 1bfe5579b072..112330009ad8 100644
--- a/drivers/backlight/lm3697/ti_lm3697_backlight.c
+++ b/drivers/backlight/lm3697/ti_lm3697_backlight.c
@@ -246,7 +246,7 @@ static int ti_lmu_backlight_update_brightness_register(struct ti_lmu_bl *lmu_bl,
 	int ret;
 	// int i = 0;
 
-	regmap_write(regmap, 0x13, 0x22);
+	regmap_write(regmap, 0x13, 0x11);
 
 	if (lmu_bl->mode == BL_PWM_BASED) {
 		switch (cfg->pwm_action) {
@@ -287,6 +287,14 @@ static int ti_lmu_backlight_update_brightness_register(struct ti_lmu_bl *lmu_bl,
 		if (!reginfo->brightness_lsb)
 			return -EINVAL;
 
+		if(lmu_bl->map_type == EXPONENTIAL_TYPE && lmu_bl->led_current_align) {
+			if(brightness) {
+				pr_info("[bkl] %s brightness = %d, align = %d\n", __func__,
+					brightness, lmu_bl->led_current_align);
+				brightness = brightness*8383/10000+324;
+			}
+		}
+
 		reg = reginfo->brightness_lsb[lmu_bl->bank_id];
 		ret = regmap_update_bits(regmap, reg,
 					 LMU_BACKLIGHT_11BIT_LSB_MASK,
@@ -430,6 +438,12 @@ static void ti_lmu_backlight_of_get_light_properties(struct device_node *np,
 		pr_info("[bkl] %s map_type default %d\n", __func__,
 			lmu_bl->map_type);
 	}
+
+	if(of_property_read_u32(np, "current-align-type", &lmu_bl->led_current_align)) {
+		lmu_bl->led_current_align = ALIGN_NONE;
+		pr_info("[bkl] %s led_current_align default %d, no align, keep as lm3697 exp mode\n", __func__,
+			lmu_bl->led_current_align);
+	}
 }
 
 static void ti_lmu_backlight_of_get_brightness_mode(struct device_node *np,
@@ -619,8 +633,8 @@ static int ti_lmu_backlight_init(struct ti_lmu_bl_chip *chip)
 	regmap_write(regmap, 0x18, 0x15);//21.8mA default
 	regmap_write(regmap, 0x1A, boost_ctl);
 	regmap_write(regmap, 0x1C, 0x0E);
-	regmap_write(regmap, 0x22, 0x07);
-	regmap_write(regmap, 0x23, 0xFF);
+	//regmap_write(regmap, 0x22, 0x07);
+	//regmap_write(regmap, 0x23, 0xFF);
 	regmap_write(regmap, 0x24, 0x02);
 	regmap_write(regmap, 0xB4, 0x03);