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-rw-r--r--drivers/pwm/pwm-rcar.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-rcar.c b/drivers/pwm/pwm-rcar.c
index 6fac8eb98d54..2685577b6dd4 100644
--- a/drivers/pwm/pwm-rcar.c
+++ b/drivers/pwm/pwm-rcar.c
@@ -3,6 +3,9 @@
* R-Car PWM Timer driver
*
* Copyright (C) 2015 Renesas Electronics Corporation
+ *
+ * Limitations:
+ * - The hardware cannot generate a 0% duty cycle.
*/
#include <linux/clk.h>