linux-kernel - [PATCH v4 1/3] dt-bindings: net: nuvoton: Add schema for Nuvoton MA35 family GMAC

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Message-Id: <20241202023643.75010-2-a0987203069@gmail.com>
Date: Mon,  2 Dec 2024 10:36:41 +0800
From: Joey Lu <a0987203069@...il.com>
To: andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	mcoquelin.stm32@...il.com,
	richardcochran@...il.com
Cc: alexandre.torgue@...s.st.com,
	joabreu@...opsys.com,
	ychuang3@...oton.com,
	schung@...oton.com,
	yclu4@...oton.com,
	peppe.cavallaro@...com,
	linux-arm-kernel@...ts.infradead.org,
	netdev@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	openbmc@...ts.ozlabs.org,
	linux-stm32@...md-mailman.stormreply.com,
	Joey Lu <a0987203069@...il.com>
Subject: [PATCH v4 1/3] dt-bindings: net: nuvoton: Add schema for Nuvoton MA35 family GMAC

Create initial schema for Nuvoton MA35 family Gigabit MAC.

Signed-off-by: Joey Lu <a0987203069@...il.com>
---
 .../bindings/net/nuvoton,ma35d1-dwmac.yaml    | 134 ++++++++++++++++++
 .../devicetree/bindings/net/snps,dwmac.yaml   |   1 +
 2 files changed, 135 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..e44abaf4da3e
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nuvoton,ma35d1-dwmac.yaml
@@ -0,0 +1,134 @@
+# 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@...oton.com>
+
+description:
+  Nuvoton 10/100/1000Mbps Gigabit Ethernet MAC Controller is based on
+  Synopsys DesignWare MAC (version 3.73a).
+
+allOf:
+  - $ref: snps,dwmac.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - nuvoton,ma35d1-dwmac
+
+  reg:
+    maxItems: 1
+    description:
+      Register range should be one of the GMAC interface.
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: MAC clock
+      - description: PTP clock
+
+  clock-names:
+    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
+
+  tx-internal-delay-ps:
+    default: 0
+    minimum: 0
+    maximum: 2000
+    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.
+      Allowed values are from 0 to 2000.
+
+  rx-internal-delay-ps:
+    default: 0
+    minimum: 0
+    maximum: 2000
+    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.
+      Allowed values are from 0 to 2000.
+
+  mdio:
+    $ref: /schemas/net/mdio.yaml#
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - interrupt-names
+  - clocks
+  - clock-names
+  - nuvoton,sys
+  - resets
+  - reset-names
+  - phy-mode
+
+unevaluatedProperties: false
+
+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>
+    ethernet@...20000 {
+        compatible = "nuvoton,ma35d1-dwmac";
+        reg = <0x40120000 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>;
+        mdio {
+            compatible = "snps,dwmac-mdio";
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            ethernet-phy@0 {
+                reg = <0>;
+            };
+        };
+    };
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index eb1f3ae41ab9..4bf59ab910cc 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -67,6 +67,7 @@ properties:
         - ingenic,x2000-mac
         - loongson,ls2k-dwmac
         - loongson,ls7a-dwmac
+        - nuvoton,ma35d1-dwmac
         - qcom,qcs404-ethqos
         - qcom,sa8775p-ethqos
         - qcom,sc8280xp-ethqos
-- 
2.34.1