diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
index 328952d7acbb..3c14a98430e1 100644
--- a/Documentation/devicetree/bindings/leds/common.yaml
+++ b/Documentation/devicetree/bindings/leds/common.yaml
@@ -79,24 +79,27 @@ properties:
       the LED.
     $ref: /schemas/types.yaml#/definitions/string
 
-    enum:
-        # LED will act as a back-light, controlled by the framebuffer system
-      - backlight
-        # LED will turn on (but for leds-gpio see "default-state" property in
-        # Documentation/devicetree/bindings/leds/leds-gpio.yaml)
-      - default-on
-        # LED "double" flashes at a load average based rate
-      - heartbeat
-        # LED indicates disk activity
-      - disk-activity
-        # LED indicates IDE disk activity (deprecated), in new implementations
-        # use "disk-activity"
-      - ide-disk
-        # LED flashes at a fixed, configurable rate
-      - timer
-        # LED alters the brightness for the specified duration with one software
-        # timer (requires "led-pattern" property)
-      - pattern
+    oneOf:
+      - enum:
+            # LED will act as a back-light, controlled by the framebuffer system
+          - backlight
+            # LED will turn on (but for leds-gpio see "default-state" property in
+            # Documentation/devicetree/bindings/leds/leds-gpio.yaml)
+          - default-on
+            # LED "double" flashes at a load average based rate
+          - heartbeat
+            # LED indicates disk activity
+          - disk-activity
+            # LED indicates IDE disk activity (deprecated), in new implementations
+            # use "disk-activity"
+          - ide-disk
+            # LED flashes at a fixed, configurable rate
+          - timer
+            # LED alters the brightness for the specified duration with one software
+            # timer (requires "led-pattern" property)
+          - pattern
+        # LED is triggered by SD/MMC activity
+      - pattern: "^mmc[0-9]+$"
 
   led-pattern:
     description: |
diff --git a/drivers/leds/leds-pca963x.c b/drivers/leds/leds-pca963x.c
index 00aecd67e348..a7e052c1db53 100644
--- a/drivers/leds/leds-pca963x.c
+++ b/drivers/leds/leds-pca963x.c
@@ -101,6 +101,7 @@ struct pca963x_led {
 	struct pca963x *chip;
 	struct led_classdev led_cdev;
 	int led_num; /* 0 .. 15 potentially */
+	bool blinking;
 	u8 gdc;
 	u8 gfrq;
 };
@@ -129,12 +130,21 @@ static int pca963x_brightness(struct pca963x_led *led,
 
 	switch (brightness) {
 	case LED_FULL:
-		val = (ledout & ~mask) | (PCA963X_LED_ON << shift);
+		if (led->blinking) {
+			val = (ledout & ~mask) | (PCA963X_LED_GRP_PWM << shift);
+			ret = i2c_smbus_write_byte_data(client,
+						PCA963X_PWM_BASE +
+						led->led_num,
+						LED_FULL);
+		} else {
+			val = (ledout & ~mask) | (PCA963X_LED_ON << shift);
+		}
 		ret = i2c_smbus_write_byte_data(client, ledout_addr, val);
 		break;
 	case LED_OFF:
 		val = ledout & ~mask;
 		ret = i2c_smbus_write_byte_data(client, ledout_addr, val);
+		led->blinking = false;
 		break;
 	default:
 		ret = i2c_smbus_write_byte_data(client,
@@ -144,7 +154,11 @@ static int pca963x_brightness(struct pca963x_led *led,
 		if (ret < 0)
 			return ret;
 
-		val = (ledout & ~mask) | (PCA963X_LED_PWM << shift);
+		if (led->blinking)
+			val = (ledout & ~mask) | (PCA963X_LED_GRP_PWM << shift);
+		else
+			val = (ledout & ~mask) | (PCA963X_LED_PWM << shift);
+
 		ret = i2c_smbus_write_byte_data(client, ledout_addr, val);
 		break;
 	}
@@ -181,6 +195,7 @@ static void pca963x_blink(struct pca963x_led *led)
 	}
 
 	mutex_unlock(&led->chip->mutex);
+	led->blinking = true;
 }
 
 static int pca963x_power_state(struct pca963x_led *led)
@@ -275,6 +290,8 @@ static int pca963x_blink_set(struct led_classdev *led_cdev,
 	led->gfrq = gfrq;
 
 	pca963x_blink(led);
+	led->led_cdev.brightness = LED_FULL;
+	pca963x_led_set(led_cdev, LED_FULL);
 
 	*delay_on = time_on;
 	*delay_off = time_off;
@@ -337,6 +354,7 @@ static int pca963x_register_leds(struct i2c_client *client,
 		led->led_cdev.brightness_set_blocking = pca963x_led_set;
 		if (hw_blink)
 			led->led_cdev.blink_set = pca963x_blink_set;
+		led->blinking = false;
 
 		init_data.fwnode = child;
 		/* for backwards compatibility */