Add support for DMAMUX-capable MCU configuration with WS2812 PWM driver. (#9471)

1 files changed, 2 insertions, 1 deletions

diff --git a/docs/ws2812_driver.md b/docs/ws2812_driver.md
index 941e1bde0..c1b96329e 100644
--- a/docs/ws2812_driver.md
+++ b/docs/ws2812_driver.md
@@ -92,6 +92,7 @@ Configure the hardware via your config.h:
 #define WS2812_PWM_PAL_MODE 2  // Pin "alternate function", see the respective datasheet for the appropriate values for your MCU. default: 2
 #define WS2812_DMA_STREAM STM32_DMA1_STREAM2  // DMA Stream for TIMx_UP, see the respective reference manual for the appropriate values for your MCU.
 #define WS2812_DMA_CHANNEL 2  // DMA Channel for TIMx_UP, see the respective reference manual for the appropriate values for your MCU.
+#define WS2812_DMAMUX_ID STM32_DMAMUX1_TIM2_UP // DMAMUX configuration for TIMx_UP -- only required if your MCU has a DMAMUX peripheral, see the respective reference manual for the appropriate values for your MCU.
 ```
 
 You must also turn on the PWM feature in your halconf.h and mcuconf.h
@@ -117,5 +118,5 @@ 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 
+#define WS2812_EXTERNAL_PULLUP
 ```