[PATCH 1/2] devicetree: bindings: net: Add bindings doc for Sunplus SP7021.

[Wells Lu <wellslutw@xxxxxxxxx>]

Add bindings documentation for Sunplus SP7021.

Signed-off-by: Wells Lu <wells.lu@xxxxxxxxxxx>
---
 .../bindings/net/sunplus,sp7021-l2sw.yaml          | 123 +++++++++++++++++++++
 MAINTAINERS                                        |   7 ++
 2 files changed, 130 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/sunplus,sp7021-l2sw.yaml

diff --git a/Documentation/devicetree/bindings/net/sunplus,sp7021-l2sw.yaml b/Documentation/devicetree/bindings/net/sunplus,sp7021-l2sw.yaml
new file mode 100644
index 0000000..1fc253d
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/sunplus,sp7021-l2sw.yaml
@@ -0,0 +1,123 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/sunplus,sp7021-l2sw.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SP7021 Dual Ethernet MAC Device Tree Bindings
+
+maintainers:
+  - Wells Lu <wells.lu@xxxxxxxxxxx>
+
+description: |
+  Sunplus SP7021 dual 10M/100M Ethernet MAC controller with Layer 2 switch.
+  The controller can operate at either dual Ethernet MAC mode or one Ethernet
+  MAC with layer 2 switch (daisy-chain) mode.
+  The device node of Sunplus SP7021 Ethernet (L2SW) MAC controller has
+  following properties.
+
+properties:
+  compatible:
+    const: sunplus,sp7021-l2sw
+
+  reg:
+    items:
+      - description: Base address and length of the L2SW registers.
+      - description: Base address and length of the MOON5 registers.
+
+  reg-names:
+    items:
+      - const: l2sw
+      - const: moon5
+
+  interrupts:
+    description: |
+      Contains number and type of interrupt. Number should be 66.
+      Type should be high-level trigger
+    maxItems: 1
+
+  clocks:
+    description: |
+      Clock controller selector for Ethernet MAC controller.
+    maxItems: 1
+
+  resets:
+    description: |
+      Reset controller selector for Ethernet MAC controller.
+    maxItems: 1
+
+  phy-handle1:
+    description: A handle to node of phy 1 in mdio node
+    maxItems: 1
+
+  phy-handle2:
+    description: A handle to node of phy 2 in mdio node
+    maxItems: 1
+
+  pinctrl-names:
+    description: |
+      Names corresponding to the numbered pinctrl states.
+      A pinctrl state named "default" must be defined.
+    const: default
+
+  pinctrl-0:
+    description: A handle to the 'default' state of pin configuration
+
+  nvmem-cells:
+    items:
+      - description: nvmem cell address of MAC address of MAC 1
+      - description: nvmem cell address of MAC address of MAC 2
+
+  nvmem-cell-names:
+    description: names corresponding to the nvmem cells of MAC address
+    items:
+      - const: mac_addr0
+      - const: mac_addr1
+
+  mode:
+    description: |
+      Set operating modes of Sunplus Dual Ethernet MAC controller.
+      Please set one of the following modes:
+        0: daisy-chain mode
+        1: dual NIC mode
+        2: daisy-chain mode but disable SA learning
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [ 0, 1, 2 ]
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - clocks
+  - resets
+  - phy-handle1
+  - phy-handle2
+  - pinctrl-names
+  - pinctrl-0
+  - nvmem-cells
+  - nvmem-cell-names
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    l2sw: l2sw@9c108000 {
+        compatible = "sunplus,sp7021-l2sw";
+        reg = <0x9c108000 0x400>, <0x9c000280 0x80>;
+        reg-names = "l2sw", "moon5";
+        interrupt-parent = <&intc>;
+        interrupts = <66 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clkc 0xa7>;
+        resets = <&rstc 0x97>;
+        phy-handle1 = <&eth_phy0>;
+        phy-handle2 = <&eth_phy1>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&l2sw_demo_board_v3_pins>;
+        nvmem-cells = <&mac_addr0>, <&mac_addr1>;
+        nvmem-cell-names = "mac_addr0", "mac_addr1";
+        mode = < 1 >;
+    };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index dcc1819..4669c16 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18000,6 +18000,13 @@ L:	netdev@xxxxxxxxxxxxxxx
 S:	Maintained
 F:	drivers/net/ethernet/dlink/sundance.c
 
+SUNPLUS ETHERNET DRIVER
+M:	Wells Lu <wells.lu@xxxxxxxxxxx>
+L:	netdev@xxxxxxxxxxxxxxx
+S:	Maintained
+W:	https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/overview
+F:	Documentation/devicetree/bindings/net/sunplus,sp7021-l2sw.yaml
+
 SUPERH
 M:	Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
 M:	Rich Felker <dalias@xxxxxxxx>
-- 
2.7.4