[PATCH v2 1/3] dt-bindings: net: nuvoton: Add schema for MA35 family GMAC

[Joey Lu <a0987203069@xxxxxxxxx>]

Create initial schema for Nuvoton MA35 family Gigabit MAC.

Signed-off-by: Joey Lu <a0987203069@xxxxxxxxx>
---
 .../bindings/net/nuvoton,ma35d1-dwmac.yaml    | 170 ++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/nuvoton,ma35d1-dwmac.yaml

diff --git a/Documentation/devicetree/bindings/net/nuvoton,ma35d1-dwmac.yaml b/Documentation/devicetree/bindings/net/nuvoton,ma35d1-dwmac.yaml
new file mode 100644
index 000000000000..45eaf13467b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nuvoton,ma35d1-dwmac.yaml
@@ -0,0 +1,170 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/nuvoton,ma35d1-dwmac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton DWMAC glue layer controller
+
+maintainers:
+  - Joey Lu <yclu4@xxxxxxxxxxx>
+
+description:
+  Nuvoton 10/100/1000Mbps Gigabit Ethernet MAC Controller is based on
+  Synopsys DesignWare MAC (version 3.73a).
+
+# We need a select here so we don't match all nodes with 'snps,dwmac'
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - nuvoton,ma35d1-dwmac
+  required:
+    - compatible
+
+allOf:
+  - $ref: snps,dwmac.yaml#
+
+properties:
+  compatible:
+    - items:
+        - enum:
+            - nuvoton,ma35d1-dwmac
+        - const: snps,dwmac-3.70a
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 2
+    items:
+      - description: MAC clock
+      - description: PTP clock
+
+  clock-names:
+    minItems: 2
+    items:
+      - const: stmmaceth
+      - const: ptp_ref
+
+  nuvoton,sys:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      - items:
+          - description: phandle to access syscon registers.
+          - description: GMAC interface ID.
+            enum: [0, 1]
+    description:
+      A phandle to the syscon with one argument that configures system registers
+      for MA35D1's two GMACs. The argument specifies the GMAC interface ID.
+
+  resets:
+    maxItems: 1
+
+  reset-names:
+    items:
+      - const: stmmaceth
+
+  phy-mode:
+    enum:
+      - rmii
+      - rgmii
+      - rgmii-id
+      - rgmii-txid
+      - rgmii-rxid
+
+  phy-handle:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Specifies a reference to a node representing a PHY device.
+
+  tx-internal-delay-ps:
+    enum: [0, 2000]
+    default: 0
+    description:
+      RGMII TX path delay used only when PHY operates in RGMII mode with
+      internal delay (phy-mode is 'rgmii-id' or 'rgmii-txid') in pico-seconds.
+
+  rx-internal-delay-ps:
+    enum: [0, 2000]
+    default: 0
+    description:
+      RGMII RX path delay used only when PHY operates in RGMII mode with
+      internal delay (phy-mode is 'rgmii-id' or 'rgmii-rxid') in pico-seconds.
+
+  mdio:
+    $ref: /schemas/net/mdio.yaml#
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-names
+  - clocks
+  - clock-names
+  - nuvoton,sys
+  - resets
+  - reset-names
+  - phy-mode
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
+    #include <dt-bindings/reset/nuvoton,ma35d1-reset.h>
+    //Example 1
+    gmac0: ethernet@40120000 {
+        compatible = "nuvoton,ma35d1-dwmac";
+        reg = <0x0 0x40120000 0x0 0x10000>;
+        interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "macirq";
+        clocks = <&clk EMAC0_GATE>, <&clk EPLL_DIV8>;
+        clock-names = "stmmaceth", "ptp_ref";
+
+        nuvoton,sys = <&sys 0>;
+        resets = <&sys MA35D1_RESET_GMAC0>;
+        reset-names = "stmmaceth";
+
+        phy-mode = "rgmii-id";
+        phy-handle = <&eth_phy0>;
+        mdio0 {
+            compatible = "snps,dwmac-mdio";
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            eth_phy0: ethernet-phy@0 {
+                reg = <0>;
+            };
+        };
+    };
+
+  - |
+    //Example 2
+    gmac1: ethernet@40130000 {
+        compatible = "nuvoton,ma35d1-dwmac";
+        reg = <0x0 0x40130000 0x0 0x10000>;
+        interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "macirq";
+        clocks = <&clk EMAC1_GATE>, <&clk EPLL_DIV8>;
+        clock-names = "stmmaceth", "ptp_ref";
+
+        nuvoton,sys = <&sys 1>;
+        resets = <&sys MA35D1_RESET_GMAC1>;
+        reset-names = "stmmaceth";
+
+        phy-mode = "rmii";
+        phy-handle = <&eth_phy1>;
+        mdio1 {
+            compatible = "snps,dwmac-mdio";
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            eth_phy1: ethernet-phy@1 {
+                reg = <1>;
+            };
+        };
+    };
-- 
2.34.1