dt-bindings: ata: sata: Document the graph port

An external connector like M.2 could expose the SATA interface to the
plugin cards. So add the graph port to establish link between the SATA
port and the connector node.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@oss.qualcomm.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>

diff --git a/Documentation/devicetree/bindings/ata/sata-common.yaml b/Documentation/devicetree/bindings/ata/sata-common.yaml
index 58c9342b9925588e002f55042de238c5fa954958..97cd69ebf33185338ad16871c57bbe18132f6028 100644 (file)
--- a/Documentation/devicetree/bindings/ata/sata-common.yaml
+++ b/Documentation/devicetree/bindings/ata/sata-common.yaml
@@ -54,4 +54,7 @@ $defs:
           each port can have a Port Multiplier attached thus allowing to
           access more than one drive by means of a single SATA port.
 
+      port:
+        $ref: /schemas/graph.yaml#/properties/port
+
 ...