netdev - [PATCH v2 1/2] dt-bindings: net: Add bindings for LiteETH

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Date:   Fri, 20 Aug 2021 17:17:25 +0930
From:   Joel Stanley <joel@....id.au>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Karol Gugala <kgugala@...micro.com>,
        Mateusz Holenko <mholenko@...micro.com>,
        devicetree@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] dt-bindings: net: Add bindings for LiteETH

LiteETH is a small footprint and configurable Ethernet core for FPGA
based system on chips.

Signed-off-by: Joel Stanley <joel@....id.au>
---
v2:
 - Fix dtschema check warning relating to registers
 - Add names to the registers to make it easier to distinguish which is
   what region
 - Add mdio description
 - Includ ethernet-controller parent description

 .../bindings/net/litex,liteeth.yaml           | 79 +++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/litex,liteeth.yaml

diff --git a/Documentation/devicetree/bindings/net/litex,liteeth.yaml b/Documentation/devicetree/bindings/net/litex,liteeth.yaml
new file mode 100644
index 000000000000..30f8f8b0b657
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/litex,liteeth.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/litex,liteeth.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LiteX LiteETH ethernet device
+
+maintainers:
+  - Joel Stanley <joel@....id.au>
+
+description: |
+  LiteETH is a small footprint and configurable Ethernet core for FPGA based
+  system on chips.
+
+  The hardware source is Open Source and can be found on at
+  https://github.com/enjoy-digital/liteeth/.
+
+allOf:
+  - $ref: ethernet-controller.yaml#
+
+properties:
+  compatible:
+    const: litex,liteeth
+
+  reg:
+    minItems: 3
+    items:
+      - description: MAC registers
+      - description: MDIO registers
+      - description: Packet buffer
+
+  reg-names:
+    minItems: 3
+
+  interrupts:
+    maxItems: 1
+
+  rx-fifo-depth: true
+  tx-fifo-depth: true
+  mac-address: true
+  local-mac-address: true
+  phy-handle: true
+
+  mdio:
+    $ref: mdio.yaml#
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    mac: ethernet@...0000 {
+        compatible = "litex,liteeth";
+        reg = <0x8021000 0x100>,
+              <0x8020800 0x100>,
+              <0x8030000 0x2000>;
+        reg-names = "mac", "mdio", "buffer";
+        rx-fifo-depth = <1024>;
+        tx-fifo-depth = <1024>;
+        interrupts = <0x11 0x1>;
+        phy-handle = <&eth_phy>;
+
+        mdio {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          eth_phy: ethernet-phy@0 {
+            reg = <0>;
+          };
+        };
+    };
+...
+
+#  vim: set ts=2 sw=2 sts=2 tw=80 et cc=80 ft=yaml :
-- 
2.32.0