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Subject: [PATCH net-next V4] dt-bindings: net: xlnx,axi-ethernet: convert bindings document to yaml
Date:   Tue, 14 Feb 2023 16:06:11 +0530
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From: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>

Convert the bindings document for Xilinx AXI Ethernet Subsystem
from txt to yaml. No changes to existing binding description.

Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: Sarath Babu Naidu Gaddam <sarath.babu.naidu.gaddam@amd.com>
---
Changes in V4:
1)Changed the interrupts property and add allOf:if:then for it.

Changes in V3:
1) Moved RFC to PATCH.
2) Addressed below review comments
	a) Indentation.
	b) maxItems:3 does not match your description.
	c) Filename matching compatibles.

Changes in V2:
1) remove .txt and change the name of file to xlnx,axiethernet.yaml.
2) Fix DT check warning('device_type' does not match any of the regexes:
   'pinctrl-[0-9]+' From schema: Documentation/devicetree/bindings/net
    /xilinx_axienet.yaml).
---
 .../bindings/net/xlnx,axi-ethernet.yaml       | 166 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 2 files changed, 167 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml

diff --git a/Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml b/Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml
new file mode 100644
index 000000000000..d2d276d4858f
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml
@@ -0,0 +1,166 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/xlnx,axi-ethernet.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AXI 1G/2.5G Ethernet Subsystem
+
+description: |
+  Also called  AXI 1G/2.5G Ethernet Subsystem, the xilinx axi ethernet IP core
+  provides connectivity to an external ethernet PHY supporting different
+  interfaces: MII, GMII, RGMII, SGMII, 1000BaseX. It also includes two
+  segments of memory for buffering TX and RX, as well as the capability of
+  offloading TX/RX checksum calculation off the processor.
+
+  Management configuration is done through the AXI interface, while payload is
+  sent and received through means of an AXI DMA controller. This driver
+  includes the DMA driver code, so this driver is incompatible with AXI DMA
+  driver.
+
+maintainers:
+  - Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
+
+properties:
+  compatible:
+    enum:
+      - xlnx,axi-ethernet-1.00.a
+      - xlnx,axi-ethernet-1.01.a
+      - xlnx,axi-ethernet-2.01.a
+
+  reg:
+    description:
+      Address and length of the IO space, as well as the address
+      and length of the AXI DMA controller IO space, unless
+      axistream-connected is specified, in which case the reg
+      attribute of the node referenced by it is used.
+    maxItems: 2
+
+  interrupts:
+    items:
+      - description: Ethernet core interrupt
+      - description: Tx DMA interrupt
+      - description: Rx DMA interrupt
+    description:
+      Ethernet core interrupt is optional. If axistream-connected property is
+      present DMA node should contains TX/RX DMA interrupts else DMA interrupt
+      resources are mentioned on ethernet node.
+    minItems: 1
+
+  phy-handle: true
+
+  xlnx,rxmem:
+    description:
+      Set to allocated memory buffer for Rx/Tx in the hardware.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  phy-mode: true
+
+  xlnx,phy-type:
+    description:
+      Do not use, but still accepted in preference to phy-mode.
+    deprecated: true
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  xlnx,txcsum:
+    description:
+      TX checksum offload. 0 or empty for disabling TX checksum offload,
+      1 to enable partial TX checksum offload and 2 to enable full TX
+      checksum offload.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2]
+
+  xlnx,rxcsum:
+    description:
+      RX checksum offload. 0 or empty for disabling RX checksum offload,
+      1 to enable partial RX checksum offload and 2 to enable full RX
+      checksum offload.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2]
+
+  xlnx,switch-x-sgmii:
+    type: boolean
+    description:
+      Indicate the Ethernet core is configured to support both 1000BaseX and
+      SGMII modes. If set, the phy-mode should be set to match the mode
+      selected on core reset (i.e. by the basex_or_sgmii core input line).
+
+  clocks:
+    items:
+      - description: Clock for AXI register slave interface.
+      - description: AXI4-Stream clock for TXD RXD TXC and RXS interfaces.
+      - description: Ethernet reference clock, used by signal delay primitives
+                     and transceivers.
+      - description: MGT reference clock (used by optional internal PCS/PMA PHY)
+
+  clock-names:
+    items:
+      - const: s_axi_lite_clk
+      - const: axis_clk
+      - const: ref_clk
+      - const: mgt_clk
+
+  axistream-connected:
+    type: object
+    description: Reference to another node which contains the resources
+      for the AXI DMA controller used by this device. If this is specified,
+      the DMA-related resources from that device (DMA registers and DMA
+      TX/RX interrupts) rather than this one will be used.
+
+  mdio: true
+
+  pcs-handle:
+    description: Phandle to the internal PCS/PMA PHY in SGMII or 1000Base-X
+      modes, where "pcs-handle" should be used to point to the PCS/PMA PHY,
+      and "phy-handle" should point to an external PHY if exists.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
+required:
+  - compatible
+  - interrupts
+  - reg
+  - xlnx,rxmem
+  - phy-handle
+
+allOf:
+  - if:
+      required:
+        - axistream-connected
+
+    then:
+      properties:
+        interrupts:
+          minItems: 2
+          maxItems: 3
+
+    else:
+      properties:
+        interrupts:
+          maxItems: 1
+
+additionalProperties: false
+
+examples:
+  - |
+    axi_ethernet_eth: ethernet@40c00000 {
+        compatible = "xlnx,axi-ethernet-1.00.a";
+        interrupt-parent = <&microblaze_0_axi_intc>;
+        interrupts = <2 0 1>;
+        clock-names = "s_axi_lite_clk", "axis_clk", "ref_clk", "mgt_clk";
+        clocks = <&axi_clk>, <&axi_clk>, <&pl_enet_ref_clk>, <&mgt_clk>;
+        phy-mode = "mii";
+        reg = <0x40c00000 0x40000>,<0x50c00000 0x40000>;
+        xlnx,rxcsum = <0x2>;
+        xlnx,rxmem = <0x800>;
+        xlnx,txcsum = <0x2>;
+        phy-handle = <&phy0>;
+
+        axi_ethernetlite_0_mdio: mdio {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            phy0: ethernet-phy@1 {
+                device_type = "ethernet-phy";
+                reg = <1>;
+            };
+        };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 2cf9eb43ed8f..0bf527552dc9 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -22895,6 +22895,7 @@ F:	drivers/iio/adc/xilinx-ams.c
 XILINX AXI ETHERNET DRIVER
 M:	Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
 S:	Maintained
+F:	Documentation/devicetree/bindings/net/xlnx,axi-ethernet.yaml
 F:	drivers/net/ethernet/xilinx/xilinx_axienet*
 
 XILINX CAN DRIVER
-- 
2.25.1