[PATCH net-next v2 1/2] dt-bindings: net: dsa: realtek: add RTL8365MB power supplies

Document the RTL8365MB power rails as optional supplies. They are optional
because the rails are often always-on; some designs break them out for
granular hwmon monitoring and regulator control.

They are scoped to realtek,rtl8365mb: different Realtek switch families use
different power-rail naming schemes, so these rails do not apply to other
families such as realtek,rtl8366rb (VDDA/VDD_CORE/VDDIO/...).

Signed-off-by: Oleksij Rempel <[email protected]>
---
 .../devicetree/bindings/net/dsa/realtek.yaml  | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/dsa/realtek.yaml b/Documentation/devicetree/bindings/net/dsa/realtek.yaml
index 473facd87a62..98ea6072bd96 100644
--- a/Documentation/devicetree/bindings/net/dsa/realtek.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/realtek.yaml
@@ -8,6 +8,30 @@ title: Realtek switches for unmanaged switches
 
 allOf:
   - $ref: dsa.yaml#/$defs/ethernet-ports
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: realtek,rtl8365mb
+    then:
+      properties:
+        avddh-supply:
+          description: AVDDH high-voltage analog supply.
+
+        avddl-supply:
+          description: AVDDL low-voltage analog supply.
+
+        dvddio-supply:
+          description: DVDDIO digital I/O supply.
+
+        dvddio1-supply:
+          description: DVDDIO_1 secondary digital I/O supply for the RGMII bank.
+
+        dvddl-supply:
+          description: DVDDL digital core supply.
+
+        pllvddl-supply:
+          description: PLLVDDL PLL analog supply.
 
 maintainers:
   - Linus Walleij <[email protected]>
@@ -243,6 +267,7 @@ examples:
     platform {
             ethernet-switch {
                     compatible = "realtek,rtl8365mb";
+                    avddh-supply = <&avddh>;
                     mdc-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
                     mdio-gpios = <&gpio1 17 GPIO_ACTIVE_HIGH>;
                     reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
-- 
2.47.3