This bitfield intends to address features to be activated within the
driver. Initially the mask was only meant for FIFO Threshold management.
Backward compatibility is preserved but the meaning of this field has been
extended to features instead of only threshold.

Signed-off-by: Pierre-Yves MORDRET <>
  Version history:
       * Initial
 Documentation/devicetree/bindings/dma/stm32-dma.txt | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/dma/stm32-dma.txt 
index 0b55718..c5f5190 100644
--- a/Documentation/devicetree/bindings/dma/stm32-dma.txt
+++ b/Documentation/devicetree/bindings/dma/stm32-dma.txt
@@ -62,14 +62,14 @@ channel: a phandle to the DMA controller plus the following 
four integer cells:
        0x1: medium
        0x2: high
        0x3: very high
-4. A 32bit mask specifying the DMA FIFO threshold configuration which are 
-   dependent:
- -bit 0-1: Fifo threshold
+4. A 32bit bitfield value specifying DMA features which are device dependent:
+ -bit 0-1: DMA FIFO threshold selection
        0x0: 1/4 full FIFO
        0x1: 1/2 full FIFO
        0x2: 3/4 full FIFO
        0x3: full FIFO
        usart1: serial@40011000 {

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