dt-bindings: net: Add Motorcomm yt8xxx ethernet phy

Add a YAML binding document for the Motorcomm yt8xxx Ethernet phy.
Signed-off-by: Frank Sae <Frank.Sae@motor-comm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/motorcomm,yt8xxx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MotorComm yt8xxx Ethernet PHY
+
+maintainers:
+  - Frank Sae <frank.sae@motor-comm.com>
+
+allOf:
+  - $ref: ethernet-phy.yaml#
+
+properties:
+  compatible:
+    enum:
+      - ethernet-phy-id4f51.e91a
+      - ethernet-phy-id4f51.e91b
+
+  rx-internal-delay-ps:
+    description: |
+      RGMII RX Clock Delay used only when PHY operates in RGMII mode with
+      internal delay (phy-mode is 'rgmii-id' or 'rgmii-rxid') in pico-seconds.
+    enum: [ 0, 150, 300, 450, 600, 750, 900, 1050, 1200, 1350, 1500, 1650,
+            1800, 1900, 1950, 2050, 2100, 2200, 2250, 2350, 2500, 2650, 2800,
+            2950, 3100, 3250, 3400, 3550, 3700, 3850, 4000, 4150 ]
+    default: 1950
+
+  tx-internal-delay-ps:
+    description: |
+      RGMII TX Clock Delay used only when PHY operates in RGMII mode with
+      internal delay (phy-mode is 'rgmii-id' or 'rgmii-txid') in pico-seconds.
+    enum: [ 0, 150, 300, 450, 600, 750, 900, 1050, 1200, 1350, 1500, 1650, 1800,
+            1950, 2100, 2250 ]
+    default: 1950
+
+  motorcomm,clk-out-frequency-hz:
+    description: clock output on clock output pin.
+    enum: [0, 25000000, 125000000]
+    default: 0
+
+  motorcomm,keep-pll-enabled:
+    description: |
+      If set, keep the PLL enabled even if there is no link. Useful if you
+      want to use the clock output without an ethernet link.
+    type: boolean
+
+  motorcomm,auto-sleep-disabled:
+    description: |
+      If set, PHY will not enter sleep mode and close AFE after unplug cable
+      for a timer.
+    type: boolean
+
+  motorcomm,tx-clk-adj-enabled:
+    description: |
+      This configuration is mainly to adapt to VF2 with JH7110 SoC.
+      Useful if you want to use tx-clk-xxxx-inverted to adj the delay of tx clk.
+    type: boolean
+
+  motorcomm,tx-clk-10-inverted:
+    description: |
+      Use original or inverted RGMII Transmit PHY Clock to drive the RGMII
+      Transmit PHY Clock delay train configuration when speed is 10Mbps.
+    type: boolean
+
+  motorcomm,tx-clk-100-inverted:
+    description: |
+      Use original or inverted RGMII Transmit PHY Clock to drive the RGMII
+      Transmit PHY Clock delay train configuration when speed is 100Mbps.
+    type: boolean
+
+  motorcomm,tx-clk-1000-inverted:
+    description: |
+      Use original or inverted RGMII Transmit PHY Clock to drive the RGMII
+      Transmit PHY Clock delay train configuration when speed is 1000Mbps.
+    type: boolean
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    mdio {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        phy-mode = "rgmii-id";
+        ethernet-phy@4 {
+            /*  Only needed to make DT lint tools work. Do not copy/paste
+             *  into real DTS files.
+             */
+            compatible = "ethernet-phy-id4f51.e91a";
+
+            reg = <4>;
+            rx-internal-delay-ps = <2100>;
+            tx-internal-delay-ps = <150>;
+            motorcomm,clk-out-frequency-hz = <0>;
+            motorcomm,keep-pll-enabled;
+            motorcomm,auto-sleep-disabled;
+        };
+    };
+  - |
+    mdio {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        phy-mode = "rgmii";
+        ethernet-phy@5 {
+            /*  Only needed to make DT lint tools work. Do not copy/paste
+             *  into real DTS files.
+             */
+            compatible = "ethernet-phy-id4f51.e91a";
+
+            reg = <5>;
+            motorcomm,clk-out-frequency-hz = <125000000>;
+            motorcomm,keep-pll-enabled;
+            motorcomm,auto-sleep-disabled;
+        };
+    };

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -847,6 +847,8 @@ patternProperties:
     description: Moortec Semiconductor Ltd.
   "^mosaixtech,.*":
     description: Mosaix Technologies, Inc.
+  "^motorcomm,.*":
+    description: MotorComm, Inc.
   "^motorola,.*":
     description: Motorola, Inc.
   "^moxa,.*":

MAINTAINERS

@@ -14170,6 +14170,7 @@ M:	Peter Geis <pgwipeout@gmail.com>
 M:	Frank <Frank.Sae@motor-comm.com>
 L:	netdev@vger.kernel.org
 S:	Maintained
+F:	Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml
 F:	drivers/net/phy/motorcomm.c
 
 MOXA SMARTIO/INDUSTIO/INTELLIO SERIAL CARD