diff --git a/src/superio/ite/common/env_ctrl.c b/src/superio/ite/common/env_ctrl.c
index 8668110713..c87f32d3e0 100644
--- a/src/superio/ite/common/env_ctrl.c
+++ b/src/superio/ite/common/env_ctrl.c
@@ -128,13 +128,19 @@ static void fan_smartconfig(const u16 base, const u8 fan,
 		pwm_ctrl = ITE_EC_FAN_CTL_PWM_MODE_AUTOMATIC;
 		pwm_ctrl |= ITE_EC_FAN_CTL_TEMPIN(conf->tmpin);
 
-		pwm_start = ITE_EC_FAN_CTL_PWM_START_DUTY(conf->pwm_start);
-
-		if (CONFIG(SUPERIO_ITE_ENV_CTRL_7BIT_SLOPE_REG)) {
-			pwm_auto = conf->slope & 0x7f;
-		} else {
-			pwm_start |= ITE_EC_FAN_CTL_PWM_SLOPE_BIT6(conf->slope);
+		if (conf->clsd_loop) {
+			pwm_ctrl |= ITE_EC_FAN_PWM_CLSD_LOOP;
+			pwm_start = ITE_EC_FAN_CTL_PWM_START_RPM(conf->rpm_start);
 			pwm_auto = ITE_EC_FAN_CTL_PWM_SLOPE_LOWER(conf->slope);
+		} else {
+			pwm_start = ITE_EC_FAN_CTL_PWM_START_DUTY(conf->pwm_start);
+
+			if (CONFIG(SUPERIO_ITE_ENV_CTRL_7BIT_SLOPE_REG)) {
+				pwm_auto = conf->slope & 0x7f;
+			} else {
+				pwm_start |= ITE_EC_FAN_CTL_PWM_SLOPE_BIT6(conf->slope);
+				pwm_auto = ITE_EC_FAN_CTL_PWM_SLOPE_LOWER(conf->slope);
+			}
 		}
 
 		if (conf->smoothing)
diff --git a/src/superio/ite/common/env_ctrl.h b/src/superio/ite/common/env_ctrl.h
index 7bce8097f5..145c6c13e9 100644
--- a/src/superio/ite/common/env_ctrl.h
+++ b/src/superio/ite/common/env_ctrl.h
@@ -91,6 +91,7 @@
 						? (0x1e + ((x)-4))	\
 						: (0x15 + ((x)-1))	\
 	)
+#define   ITE_EC_FAN_PWM_CLSD_LOOP		(1 << 2)
 
 #if CONFIG(SUPERIO_ITE_ENV_CTRL_5FANS)
 #define   ITE_EC_FAN_CTL_TEMPIN_MASK		(7 << 3)
@@ -110,6 +111,13 @@
 			? ITE_EC_FAN_MAX_PWM			\
 			: (_p * ITE_EC_FAN_MAX_PWM) / 100;	\
 	  })
+#define   ITE_EC_FAN_CTL_PWM_RPM(p)		\
+	  ({					\
+		const unsigned int _p = p;			\
+		(_p >= 4080)					\
+			? 0xFF			\
+			: (_p / 16);	\
+	  })
 
 #define ITE_EC_HIGH_TEMP_LIMIT(x)		(0x40 + ((x-1) * 2))
 #define ITE_EC_LOW_TEMP_LIMIT(x)		(0x41 + ((x-1) * 2))
@@ -178,6 +186,7 @@ static const u8 ITE_EC_TEMP_ADJUST[] = { 0x56, 0x57, 0x59 };
 /* Common for ITE_EC_FAN_CTL_PWM_START */
 #define   ITE_EC_FAN_CTL_PWM_SLOPE_BIT6(s)	(((s) & 0x40) << 1)
 #define   ITE_EC_FAN_CTL_PWM_START_DUTY(p)	ITE_EC_FAN_CTL_PWM_DUTY(p)
+#define   ITE_EC_FAN_CTL_PWM_START_RPM(p)	ITE_EC_FAN_CTL_PWM_RPM(p)
 
 /* Common for ITE_EC_FAN_CTL_PWM_AUTO */
 #define   ITE_EC_FAN_CTL_AUTO_SMOOTHING_EN	(1 << 7)
diff --git a/src/superio/ite/common/env_ctrl_chip.h b/src/superio/ite/common/env_ctrl_chip.h
index fa896e4074..2bb0780c53 100644
--- a/src/superio/ite/common/env_ctrl_chip.h
+++ b/src/superio/ite/common/env_ctrl_chip.h
@@ -60,6 +60,8 @@ struct ite_ec_fan_smartconfig {
 	u8 smoothing;	/* enable smoothing				*/
 	u8 pwm_start;	/* start at this duty cycle (%)			*/
 	u8 slope;	/* increase duty cycle by `slope`%/°C		*/
+	u8 clsd_loop;	/* tachometer closed-loop mode enable		*/
+	u16 rpm_start;	/* start at this RPM (clsd_loop = 1)		*/
 };
 
 struct ite_ec_fan_config {