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-rw-r--r--platforms/chibios/chibios_config.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/platforms/chibios/chibios_config.h b/platforms/chibios/chibios_config.h
index 1f8a7842fe..f1636f9da0 100644
--- a/platforms/chibios/chibios_config.h
+++ b/platforms/chibios/chibios_config.h
@@ -37,7 +37,9 @@
# define BACKLIGHT_PAL_MODE (PAL_MODE_ALTERNATE_PWM | PAL_RP_PAD_DRIVE12 | PAL_RP_GPIO_OE)
# endif
# define BACKLIGHT_PWM_COUNTER_FREQUENCY 1000000
-# define BACKLIGHT_PWM_PERIOD BACKLIGHT_PWM_COUNTER_FREQUENCY / 2048
+# ifndef BACKLIGHT_PWM_PERIOD
+# define BACKLIGHT_PWM_PERIOD BACKLIGHT_PWM_COUNTER_FREQUENCY / 2048
+# endif
# ifndef AUDIO_PWM_PAL_MODE
# define AUDIO_PWM_PAL_MODE (PAL_MODE_ALTERNATE_PWM | PAL_RP_PAD_DRIVE12 | PAL_RP_GPIO_OE)