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Message-Id: <20240713-thead-dwmac-v1-2-81f04480cd31@tenstorrent.com>
Date: Sat, 13 Jul 2024 15:35:11 -0700
From: Drew Fustini <drew@...7.com>
To: "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Giuseppe Cavallaro <peppe.cavallaro@...com>, 
 Jose Abreu <joabreu@...opsys.com>, Jisheng Zhang <jszhang@...nel.org>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Emil Renner Berthing <emil.renner.berthing@...onical.com>, 
 Drew Fustini <drew@...7.com>, Guo Ren <guoren@...nel.org>, 
 Fu Wei <wefu@...hat.com>, Conor Dooley <conor@...nel.org>, 
 Paul Walmsley <paul.walmsley@...ive.com>, 
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>
Cc: netdev@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, linux-riscv@...ts.infradead.org
Subject: [PATCH RFC net-next 2/4] dt-bindings: net: add T-HEAD dwmac
 support

From: Jisheng Zhang <jszhang@...nel.org>

Add documentation to describe T-HEAD dwmac.

Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
Link: https://lore.kernel.org/r/20230827091710.1483-3-jszhang@kernel.org
Signed-off-by: Emil Renner Berthing <emil.renner.berthing@...onical.com>
[drew: change apb registers from syscon to second reg of gmac node]
Signed-off-by: Drew Fustini <drew@...7.com>
---
 .../devicetree/bindings/net/snps,dwmac.yaml        |  1 +
 .../devicetree/bindings/net/thead,dwmac.yaml       | 81 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 3 files changed, 83 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 0ad3bf5dafa7..d417f0e2d9c6 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -97,6 +97,7 @@ properties:
         - snps,dwxgmac-2.10
         - starfive,jh7100-dwmac
         - starfive,jh7110-dwmac
+        - thead,th1520-dwmac
 
   reg:
     minItems: 1
diff --git a/Documentation/devicetree/bindings/net/thead,dwmac.yaml b/Documentation/devicetree/bindings/net/thead,dwmac.yaml
new file mode 100644
index 000000000000..5618ede47925
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/thead,dwmac.yaml
@@ -0,0 +1,81 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/thead,dwmac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: T-HEAD DWMAC Ethernet controller
+
+maintainers:
+  - Jisheng Zhang <jszhang@...nel.org>
+
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - thead,th1520-dwmac
+  required:
+    - compatible
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - thead,th1520-dwmac
+      - const: snps,dwmac-3.70a
+
+  reg:
+    minItems: 2
+    maxItems: 2
+    items:
+      - description: DesignWare GMAC IP core registers
+      - description: GMAC APB registers
+
+  reg-names:
+    minItems: 2
+    maxItems: 2
+    items:
+      - const: dwmac
+      - const: apb
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+  - interrupt-names
+  - phy-mode
+
+allOf:
+  - $ref: snps,dwmac.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    gmac0: ethernet@...70000 {
+        compatible = "thead,th1520-dwmac", "snps,dwmac-3.70a";
+        reg = <0xe7070000 0x2000>, <0xec003000 0x1000>;
+        reg-names = "dwmac", "apb";
+        clocks = <&clk 1>, <&clk 2>;
+        clock-names = "stmmaceth", "pclk";
+        interrupts = <66>;
+        interrupt-names = "macirq";
+        phy-mode = "rgmii-id";
+        snps,fixed-burst;
+        snps,axi-config = <&stmmac_axi_setup>;
+        snps,pbl = <32>;
+        phy-handle = <&phy0>;
+
+        mdio {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            compatible = "snps,dwmac-mdio";
+
+            phy0: ethernet-phy@0 {
+                reg = <0>;
+            };
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index e1736969189b..c724c2c4e06c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19319,6 +19319,7 @@ M:	Fu Wei <wefu@...hat.com>
 L:	linux-riscv@...ts.infradead.org
 S:	Maintained
 F:	Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml
+F:	Documentation/devicetree/bindings/net/thead,dwmac.yaml
 F:	arch/riscv/boot/dts/thead/
 F:	drivers/clk/thead/clk-th1520-ap.c
 F:	include/dt-bindings/clock/thead,th1520-clk-ap.h

-- 
2.34.1


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