[PATCH 2/3] dt-bindings: sound: Clarify the usage of clocks in SAI

[Daniel Baluta]

SAI might have up to 4 clock sources selected by an internal
CLK mux.

On imx6/7 mclk0/mclk1 are the same, while on imx8 mclk0 and
mclk1 are coming from different sources.

Signed-off-by: Daniel Baluta <daniel.baluta@xxxxxxx>
---
 Documentation/devicetree/bindings/sound/fsl-sai.txt | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/fsl-sai.txt b/Documentation/devicetree/bindings/sound/fsl-sai.txt
index 2e726b983845..db0497d1920a 100644
--- a/Documentation/devicetree/bindings/sound/fsl-sai.txt
+++ b/Documentation/devicetree/bindings/sound/fsl-sai.txt
@@ -15,8 +15,9 @@ Required properties:
   - clocks		: Must contain an entry for each entry in clock-names.
 
   - clock-names		: Must include the "bus" for register access and
-			  "mclk1", "mclk2", "mclk3" for bit clock and frame
-			  clock providing.
+			  "mclk0", "mclk1", "mclk2", "mclk3" the four clock
+			  sources of the SAI clock MUX selecting a clock
+			  for bit clock and frame clock providing.
   - dmas		: Generic dma devicetree binding as described in
 			  Documentation/devicetree/bindings/dma/dma.txt.
 
-- 
2.17.1