[PATCH net-next v2 4/6] dt-bindings: net: renesas,rzn1-gmac: Document RZ/N1 GMAC support

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Add "renesas,rzn1-gmac" binding documentation which is compatible with
"snps,dwmac" compatible driver but uses a custom PCS to communicate
with the phy.

Signed-off-by: Clément Léger <clement.leger@xxxxxxxxxxx>
---
 .../bindings/net/renesas,rzn1-gmac.yaml       | 67 +++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/renesas,rzn1-gmac.yaml

diff --git a/Documentation/devicetree/bindings/net/renesas,rzn1-gmac.yaml b/Documentation/devicetree/bindings/net/renesas,rzn1-gmac.yaml
new file mode 100644
index 000000000000..944fd0d97d79
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/renesas,rzn1-gmac.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/renesas,rzn1-gmac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas GMAC
+
+maintainers:
+  - Clément Léger <clement.leger@xxxxxxxxxxx>
+
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - renesas,r9a06g032-gmac
+          - renesas,rzn1-gmac
+  required:
+    - compatible
+
+allOf:
+  - $ref: snps,dwmac.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - renesas,r9a06g032-gmac
+          - renesas,rzn1-gmac
+          - snps,dwmac
+
+  pcs-handle:
+    description:
+      phandle pointing to a PCS sub-node compatible with
+      renesas,rzn1-miic.yaml#
+    $ref: /schemas/types.yaml#/definitions/phandle
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/r9a06g032-sysctrl.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    ethernet@44000000 {
+      compatible = "renesas,rzn1-gmac";
+      reg = <0x44000000 0x2000>;
+      interrupt-parent = <&gic>;
+      interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
+             <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>,
+             <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
+      interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
+      clock-names = "stmmaceth";
+      clocks = <&sysctrl R9A06G032_HCLK_GMAC0>;
+      snps,multicast-filter-bins = <256>;
+      snps,perfect-filter-entries = <128>;
+      tx-fifo-depth = <2048>;
+      rx-fifo-depth = <4096>;
+      pcs-handle = <&mii_conv1>;
+      phy-mode = "mii";
+    };
+
+...
-- 
2.39.0




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