dt-bindings: serial: fsl-lpuart: add optional power-domains property

Add optional power-domains property for i.MX8 usage.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230328054355.1973397-1-peng.fan@oss.nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml b/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml
index ab81722..9306240 100644 (file)
--- a/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml
+++ b/Documentation/devicetree/bindings/serial/fsl-lpuart.yaml
@@ -65,6 +65,9 @@ properties:
       - const: rx
       - const: tx
 
+  power-domains:
+    maxItems: 1
+
 required:
   - compatible
   - reg