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-rw-r--r--docs/ws2812_driver.md11
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diff --git a/docs/ws2812_driver.md b/docs/ws2812_driver.md
index 51b053b9b..fe5f88585 100644
--- a/docs/ws2812_driver.md
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@@ -99,3 +99,14 @@ While not an exhaustive list, the following table provides the scenarios that ha
| f401/f411 | :heavy_check_mark: |
*Other supported ChibiOS boards and/or pins may function, it will be highly chip and configuration dependent.*
+
+### Push Pull and Open Drain Configuration
+The default configuration is a push pull on the defined pin.
+This can be configured for bitbang, PWM and SPI.
+
+Note: This only applies to STM32 boards.
+
+ To configure the `RGB_DI_PIN` to open drain configuration add this to your config.h file:
+```c
+ #define WS2812_EXTERNAL_PULLUP
+```