[PATCH net-next v2] dt-bindings: net: ti: k3-am654-cpsw-nuss: Document Serdes PHY

[Siddharth Vadapalli]

Update bindings to include Serdes PHY as an optional PHY, in addition to
the existing CPSW MAC's PHY. The CPSW MAC's PHY is required while the
Serdes PHY is optional. The Serdes PHY handle has to be provided only
when the Serdes is being configured in a Single-Link protocol. Using the
name "serdes-phy" to represent the Serdes PHY handle, the am65-cpsw-nuss
driver can obtain the Serdes PHY and request the Serdes to be
configured.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@xxxxxx>
---

Hello,

This patch corresponds to the Serdes PHY bindings that were missed out in
the series at:
https://lore.kernel.org/r/20230104103432.1126403-1-s-vadapalli@xxxxxx/
This was pointed out at:
https://lore.kernel.org/r/CAMuHMdW5atq-FuLEL3htuE3t2uO86anLL3zeY7n1RqqMP_rH1g@xxxxxxxxxxxxxx/

Changes from v1:
1. Describe phys property with minItems, items and description.
2. Use minItems and items in phy-names.
3. Remove the description in phy-names.

v1:
https://lore.kernel.org/r/20230306094750.159657-1-s-vadapalli@xxxxxx/

 .../bindings/net/ti,k3-am654-cpsw-nuss.yaml        | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
index 900063411a20..0fb48bb6a041 100644
--- a/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
+++ b/Documentation/devicetree/bindings/net/ti,k3-am654-cpsw-nuss.yaml
@@ -126,8 +126,18 @@ properties:
             description: CPSW port number
 
           phys:
-            maxItems: 1
-            description: phandle on phy-gmii-sel PHY
+            minItems: 1
+            items:
+              - description: CPSW MAC's PHY.
+              - description: Serdes PHY. Serdes PHY is required only if
+                             the Serdes has to be configured in the
+                             Single-Link configuration.
+
+          phy-names:
+            minItems: 1
+            items:
+              - const: mac-phy
+              - const: serdes-phy
 
           label:
             description: label associated with this port
-- 
2.25.1