boards: shield: add arceli w5500 ethernet

add shield for arceli w5500 ethernet breakout with SPI
serial bus

Signed-off-by: Parthiban Nallathambi <[email protected]>

Author: parthitce

boards/shields/arceli_eth_w5500/Kconfig.defconfig

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+# Copyright (c) 2022 Linumiz
+# SPDX-License-Identifier: Apache-2.0
+
+if SHIELD_ARCELI_ETH_W5500
+
+if NETWORKING
+
+# W5500 is L2 chip slave on SPI
+config SPI
+	default y
+
+config NET_L2_ETHERNET
+	default y
+
+# W5500 Ethernet Device
+config ETH_W5500
+	default y
+
+endif # NETWORKING
+
+endif # SHIELD_ARCELI_ETH_W5500

boards/shields/arceli_eth_w5500/Kconfig.shield

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+# Copyright (c) 2022 Linumiz
+# SPDX-License-Identifier: Apache-2.0
+
+config SHIELD_ARCELI_ETH_W5500
+	def_bool $(shields_list_contains,arceli_eth_w5500)

boards/shields/arceli_eth_w5500/arceli_eth_w5500.overlay

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+/* Copyright (c) 2022 Linumiz
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&arduino_spi {
+	status = "okay";
+
+	eth_w5500: eth_w5500@0 {
+		compatible = "wiznet,w5500";
+		reg = <0x0>;
+		spi-max-frequency = <80000000>;
+		int-gpios = <&arduino_header 15 GPIO_ACTIVE_LOW>;	/* D9 */
+		reset-gpios = <&arduino_header 14 GPIO_ACTIVE_LOW>;	/* D8 */
+		label = "w5500";
+	};
+};

boards/shields/arceli_eth_w5500/doc/index.rst

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+.. _arceli_eth_w5500:
+
+ARCELI W5500 ETH
+################
+
+Overview
+********
+
+ARCELI W5500 etherner is breakout board with SPI bus access over 10 pin header.
+`W5500`_ is 10/100 MBPS stand alone Ethernet controller with on-board MAC & PHY,
+16 KiloBytes for FIFO buffer and SPI serial interface.
+
+Pins Assignment of the W5500 Shield
+===================================
+
++-----------------------+---------------------------------------------+
+| Shield Connector Pin  | Function                                    |
++=======================+=============================================+
+| RST#                  | Ethernet Controller's Reset                 |
++-----------------------+---------------------------------------------+
+| CS#                   | SPI's Chip Select                           |
++-----------------------+---------------------------------------------+
+| SCK                   | SPI's ClocK                                 |
++-----------------------+---------------------------------------------+
+| SDO                   | SPI's Slave Data Output  (MISO)             |
++-----------------------+---------------------------------------------+
+| SDI                   | SPI's Slave Data Input   (MISO)             |
++-----------------------+---------------------------------------------+
+| INT                   | Ethernet Controller's Interrupt Output      |
++-----------------------+---------------------------------------------+
+
+
+Requirements
+************
+
+This shield/breakout board can be used with any board with SPI interfaces in
+Arduino header or custom header (by adjusting the overlay).
+
+Programming
+***********
+
+Set ``-DSHIELD=arceli_eth_w5500`` when you invoke ``west build``. For example:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/net/dhcp_client
+   :board: nrf52840dk_nrf52840
+   :shield: arceli_eth_w5500
+   :goals: build
+
+References
+**********
+
+.. target-notes::
+
+.. _W5500:
+   https://www.wiznet.io/product-item/w5500/