Add the 3 input clock sources for the chip into the device tree binding
document.

Signed-off-by: Charles Keepax <ckee...@opensource.cirrus.com>
---

No changes since v1.

Thanks,
Charles

 Documentation/devicetree/bindings/mfd/madera.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/madera.txt 
b/Documentation/devicetree/bindings/mfd/madera.txt
index cad0f28005027..47e2b8bc60519 100644
--- a/Documentation/devicetree/bindings/mfd/madera.txt
+++ b/Documentation/devicetree/bindings/mfd/madera.txt
@@ -67,6 +67,14 @@ Optional properties:
     As defined in bindings/gpio.txt.
     Although optional, it is strongly recommended to use a hardware reset
 
+  - clocks: Should reference the clocks supplied on MCLK1, MCLK2 and MCLK3
+  - clock-names: May contain up to three strings:
+      "mclk1" for the clock supplied on MCLK1, recommended to be a high
+      quality audio reference clock
+      "mclk2" for the clock supplied on MCLK2, required to be an always on
+      32k clock
+      "mclk3" for the clock supplied on MCLK3
+
   - MICBIASx : Initial data for the MICBIAS regulators, as covered in
     Documentation/devicetree/bindings/regulator/regulator.txt.
     One for each MICBIAS generator (MICBIAS1, MICBIAS2, ...)
-- 
2.11.0

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