Add the 3 optional power supplies using the exact description
found in the document named
"SiI9022A/SiI9024A HDMI Transmitter Data Sheet (August 2016)".

Signed-off-by: Philippe Cornu <philippe.co...@st.com>
---
 Documentation/devicetree/bindings/display/bridge/sii902x.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/bridge/sii902x.txt 
b/Documentation/devicetree/bindings/display/bridge/sii902x.txt
index 56a3e68ccb80..cf53678fe574 100644
--- a/Documentation/devicetree/bindings/display/bridge/sii902x.txt
+++ b/Documentation/devicetree/bindings/display/bridge/sii902x.txt
@@ -8,6 +8,9 @@ Optional properties:
        - interrupts-extended or interrupt-parent + interrupts: describe
          the interrupt line used to inform the host about hotplug events.
        - reset-gpios: OF device-tree gpio specification for RST_N pin.
+       - iovcc-supply: I/O supply voltage (1.8V or 3.3V, host-dependent).
+       - avcc12-supply: TMDS analog supply voltage (1.2V).
+       - cvcc12-supply: Digital core supply voltage (1.2V).
 
 Optional subnodes:
        - video input: this subnode can contain a video input port node
-- 
2.15.1

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