diff --git a/Documentation/leds/leds-st1202.rst b/Documentation/leds/leds-st1202.rst
index ed32eb3a27d4..28479a112389 100644
--- a/Documentation/leds/leds-st1202.rst
+++ b/Documentation/leds/leds-st1202.rst
@@ -20,6 +20,11 @@ brightness (PWM) and duration must be written to hw_pattern.
 - Min pattern duration: 22 ms
 - Max pattern duration: 5610 ms
 
+If the device tree sets max-brightness, that value replaces 255 as the
+upper limit, and a step equal to it drives the channel at full scale.
+The hardware cannot go above 255, so with a larger max-brightness every
+step from 255 upwards is full scale.
+
 The format of the hardware pattern values should be:
 "brightness duration brightness duration ..."
 
diff --git a/drivers/leds/leds-st1202.c b/drivers/leds/leds-st1202.c
index 9985b4b60989..5558ac9612a1 100644
--- a/drivers/leds/leds-st1202.c
+++ b/drivers/leds/leds-st1202.c
@@ -91,6 +91,16 @@ static u8 st1202_milliseconds_to_prescaler(unsigned int value)
 	return value / ST1202_MILLIS_PATTERN_DUR_MIN;
 }
 
+static u16 st1202_brightness_to_pwm(int brightness, unsigned int max_brightness)
+{
+	if (!max_brightness)
+		return 0;
+
+	brightness = clamp_t(int, brightness, LED_OFF, max_brightness);
+
+	return brightness * ST1202_PATTERN_PWM_FULL / max_brightness;
+}
+
 static int st1202_pwm_pattern_write(struct st1202_chip *chip, int led_num,
 				int pattern, unsigned int value)
 {
@@ -235,8 +245,11 @@ static int st1202_led_pattern_set(struct led_classdev *ldev,
 {
 	struct st1202_led *led = cdev_to_st1202_led(ldev);
 	struct st1202_chip *chip = led->chip;
+	unsigned int max_brightness;
 	int ret;
 
+	max_brightness = min_t(unsigned int, ldev->max_brightness, U8_MAX);
+
 	if (len > ST1202_MAX_PATTERNS)
 		return -EINVAL;
 
@@ -254,7 +267,8 @@ static int st1202_led_pattern_set(struct led_classdev *ldev,
 
 	for (int pattern = 0; pattern < len; pattern++) {
 		ret = st1202_pwm_pattern_write(chip, led->led_num, pattern,
-						patterns[pattern].brightness);
+					st1202_brightness_to_pwm(patterns[pattern].brightness,
+								max_brightness));
 		if (ret != 0)
 			return ret;