[PATCH 1/2] ASoC: dt-bindings: fsl-sai: Document RX/TX BCLK swap support

[Marek Vasut <marex@xxxxxxx>]

Document support for setting the Bit Clock Swap bit in CR2 register
via new "fsl,sai-bit-clock-swap" DT property. This bit swaps the
bit clock used by the transmitter or receiver in asynchronous mode,
i.e. makes transmitter use RX_BCLK and TX_SYNC, and vice versa,
makes receiver use TX_BCLK and RX_SYNC.

Signed-off-by: Marek Vasut <marex@xxxxxxx>
---
Cc: Conor Dooley <conor+dt@xxxxxxxxxx>
Cc: Fabio Estevam <festevam@xxxxxxxxx>
Cc: Jaroslav Kysela <perex@xxxxxxxx>
Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
Cc: Liam Girdwood <lgirdwood@xxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Michael Turquette <mturquette@xxxxxxxxxxxx>
Cc: Michael Walle <michael@xxxxxxxx>
Cc: Nicolin Chen <nicoleotsuka@xxxxxxxxx>
Cc: Rob Herring <robh@xxxxxxxxxx>
Cc: Shengjiu Wang <shengjiu.wang@xxxxxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxx>
Cc: Takashi Iwai <tiwai@xxxxxxxx>
Cc: Xiubo Li <Xiubo.Lee@xxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-clk@xxxxxxxxxxxxxxx
Cc: linux-sound@xxxxxxxxxxxxxxx
---
 Documentation/devicetree/bindings/sound/fsl,sai.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/fsl,sai.yaml b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
index a5d9c246cc476..7a58df1e3f87c 100644
--- a/Documentation/devicetree/bindings/sound/fsl,sai.yaml
+++ b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
@@ -132,6 +132,13 @@ properties:
       of transmitter.
     type: boolean
 
+  fsl,sai-bit-clock-swap:
+    description: |
+      Enable Bit Clock Swap, which swaps the bit clock used by the transmitter
+      or receiver in asynchronous mode, i.e. makes transmitter use RX_BCLK and
+      TX_SYNC, and vice versa, makes receiver use TX_BCLK and RX_SYNC.
+    type: boolean
+
   fsl,shared-interrupt:
     description: Interrupt is shared with other modules.
     type: boolean
-- 
2.45.2