soc: microchip: Introduce pic32cxsg sg41

boards/microchip/pic32cxsg41_cult/Kconfig.defconfig

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+# PIC32CX SG41 Curiosity Ultra board configuration
+#
+# Copyright (c) 2024 Microchip
+# SPDX-License-Identifier: Apache-2.0
+
+if ETH_SAM_GMAC
+
+# Read MAC address from AT24MAC402 EEPROM
+
+config ETH_SAM_GMAC_MAC_I2C_INT_ADDRESS
+	default 0x9A
+
+config ETH_SAM_GMAC_MAC_I2C_INT_ADDRESS_SIZE
+	default 1
+
+config ETH_SAM_GMAC_MAC_I2C_EEPROM
+	default y
+	select I2C
+
+endif # ETH_SAM_GMAC
+
+if NETWORKING
+
+config NET_L2_ETHERNET
+	default y
+
+endif # NETWORKING

boards/microchip/pic32cxsg41_cult/Kconfig.pic32cxsg41_cult

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+# Copyright (c) 2024 Microchip
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_PIC32CXSG41_CULT
+	select SOC_PIC32CX1025SG41128

boards/microchip/pic32cxsg41_cult/board.cmake

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+# Copyright (c) 2024 Microchip
+
+# SPDX-License-Identifier: Apache-2.0
+
+include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
+board_finalize_runner_args(jlink "--device=pic32cx1025sg41128")

boards/microchip/pic32cxsg41_cult/board.yml

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+board:
+  name: pic32cxsg41_cult
+  full_name: PIC32CX SG41 Curiosity Ultra Evaluation Kit
+  vendor: microchip
+  socs:
+    - name: pic32cx1025sg41128

boards/microchip/pic32cxsg41_cult/board_jlink.cmake

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+# Copyright (c) 2024 Microchip
+# SPDX-License-Identifier: Apache-2.0
+
+include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
+board_finalize_runner_args(jlink "--device=pic32cx1025sg41128")

boards/microchip/pic32cxsg41_cult/doc/index.rst

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+.. zephyr:board:: pic32cxsg41_cult
+
+Overview
+********
+
+The PIC32CX SG41 Curiosity Ultra evaluation kit is ideal for evaluation and
+prototyping with the PIC32CX SG Cortex®-M4F processor-based
+microcontrollers. The kit includes Microchip’s Embedded Debugger (EDBG),
+which provides a full debug interface without the need for additional
+hardware.
+
+Hardware
+********
+
+- PIC32CX1025SG41 ARM Cortex-M4F processor at 120 MHz
+- 32.768 kHz crystal oscillator
+- 12 MHz crystal oscillator
+- 1024 KiB flash memory and 256 KiB of RAM
+- Two yellow user LEDs
+- Two mechanical user push buttons
+- One reset button
+- On-board USB based EDBG unit with serial console
+- Embedded Debugger MCU (PKoB4)
+- 64 Mbit QSPI Flash
+- AT24MAC402 serial EEPROM with EUI-48™ MAC address
+- Ethernet transceiver 10/100 Mbps Ethernet MAC,
+  compatible with the IEEE 802.3 standard.
+- Arduino Uno header connectors
+- X32 Audio Interface Headers
+- mikroBUS header connectors
+- DAC Output header
+- USB interface, host, and device
+- SD/SDIO card connector
+
+Supported Features
+==================
+
+.. zephyr:board-supported-hw::
+
+Pin Mapping
+===========
+
+The Microchip PIC32CXSG41 Curiosity Ultra evaluation kit has 4 GPIO controllers. These
+controllers are responsible for pin muxing, input/output, pull-up, etc.
+
+For more details please refer to `Microchip PIC32CX SG41-SG60-SG61 Family Datasheet`_.
+
+.. image:: img/PIC32CXSG41-pinout1.webp
+     :align: center
+     :alt: PIC32CXSG41-CULT-pinout1
+
+.. image:: img/PIC32CXSG41-pinout2.webp
+     :align: center
+     :alt: PIC32CXSG41-CULT-pinout2
+
+.. image:: img/PIC32CXSG41-pinout3.webp
+     :align: center
+     :alt: PIC32CXSG41-CULT-pinout3
+
+Default Zephyr Peripheral Mapping:
+----------------------------------
+
+- SERCOM2 USART TX : PB13
+- SERCOM2 USART RX : PB12
+- GPIO/PWM LED1    : PC21
+- GPIO/PWM LED2    : PA16
+- GPIO SW1         : PD00
+- GPIO SW2         : PD01
+- GMAC RMII REFCK  : PA14
+- GMAC RMII TXEN   : PA17
+- GMAC RMII TXD0   : PA18
+- GMAC RMII TXD1   : PA19
+- GMAC RMII CRSDV  : PC20
+- GMAC RMII RXD0   : PA13
+- GMAC RMII RXD1   : PA12
+- GMAC RMII RXER   : PA15
+- GMAC MDIO MDC    : PC11
+- GMAC MDIO MDIO   : PC12
+- SERCOM0 SPI SCK  : PB24
+- SERCOM0 SPI MOSI : PB25
+- SERCOM0 SPI MISO : PC25
+- SERCOM0 SPI SS   : PC24
+- SERCOM7 I2C SDA  : PD08
+- SERCOM7 I2C SCL  : PD09
+- USB DP           : PA25
+- USB DM           : PA24
+
+System Clock
+============
+
+The PIC32CXSG41 MCU is configured to use the 32.768 kHz external oscillator
+with the on-chip PLL generating the 48 MHz system clock.
+
+Serial Port
+===========
+
+The PIC32CXSG41 MCU has 8 SERCOM based USARTs with one configured as USARTs in this BSP.
+- SERCOM4 is the default Zephyr console.
+
+- SERCOM4 115200 8n1 connected to the onboard Microchip Embedded Debugger (EDBG).
+
+The PIC32CXSG41 MCU has 8 SERCOM based SPIs.
+
+The PIC32CXSG41 MCU has 5 SERCOM based I2Cs. On the Microchip PIC32CXSG41 Curiosity Ultra,
+SERCOM7 is connected to a AT24MAC402 EEPROM.
+
+Programming and Debugging
+=========================
+
+.. zephyr:board-supported-runners::
+
+The Microchip PIC32CXSG41 Curiosity Ultra comes with a Microchip Embedded Debugger (EDBG).
+This provides a debug interface to the PIC32CXSG41 chip and is supported by OpenOCD.
+
+Flashing
+========
+
+#. Build the Zephyr kernel and the ``hello_world`` sample application:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: pic32cxsg41_cult
+   :goals: build
+   :compact:
+
+Connect the Microchip PIC32CXSG41 Curiosity Ultra to your host computer using the USB debug port.
+
+Run your favorite terminal program to listen for output. Under Linux thet terminal should be.
+
+.. code-block:: console
+
+   $ minicom -D /dev/ttyACM0 -o
+
+The -o option tells minicom not to send the modem initialization string.
+Connection should be configured as follows:
+
+   - Speed: 115200
+   - Data: 8 bits
+   - Parity: None
+   - Stop bits: 1
+
+To flash an image:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: pic32cxsg41_cult
+   :goals: flash
+   :compact:
+
+You should see "Hello World! pic32cxsg41_cult" in your terminal.
+
+Debugging
+=========
+
+SVD files are included in hal_microchip/pic32c/pic32cxsg/include/pic32cxsg41/svd.
+
+References
+**********
+
+.. target-notes::
+
+.. _Microchip website:
+	https://www.microchip.com/en-us/development-tool/EV06X38A
+
+.. _Microchip PIC32CX SG41-SG60-SG61 Family Datasheet:
+	https://ww1.microchip.com/downloads/aemDocuments/documents/MCU32/ProductDocuments/DataSheets/PIC32CX-SG41-SG60-SG61-Family-Data-Sheet-DS60001715.pdf

boards/microchip/pic32cxsg41_cult/pic32cxsg41_cult-pinctrl.dtsi

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+/*
+ * Copyright (c) 2024 Microchip
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <dt-bindings/pinctrl/pic32cx1025sg41128-pinctrl.h>
+
+&pinctrl {
+	pwm_default: pwm_default {
+		group1 {
+			pinmux = <PC18F_TCC0_WO2>;
+		};
+	};
+
+	gmac_rmii: gmac_rmii {
+		group1 {
+			pinmux = <PA14L_GMAC_GTXCK>,
+				 <PA17L_GMAC_GTXEN>,
+				 <PA18L_GMAC_GTX0>,
+				 <PA19L_GMAC_GTX1>,
+				 <PC20L_GMAC_GRXDV>,
+				 <PA13L_GMAC_GRX0>,
+				 <PA12L_GMAC_GRX1>,
+				 <PA15L_GMAC_GRXER>;
+		};
+	};
+
+	mdio_default: mdio_default {
+		group1 {
+			pinmux = <PC22L_GMAC_GMDC>,
+				 <PC23L_GMAC_GMDIO>;
+		};
+	};
+
+	sercom7_i2c_default: sercom7_i2c_default {
+		group1 {
+			pinmux = <PD8C_SERCOM7_PAD0>,
+				 <PD9C_SERCOM7_PAD1>;
+		};
+	};
+
+	sercom0_spi_default: sercom0_spi_default {
+		group1 {
+			pinmux = <PB24C_SERCOM0_PAD0>,
+				 <PB25C_SERCOM0_PAD1>,
+				 <PC25C_SERCOM0_PAD3>;
+		};
+	};
+
+	sercom4_uart_default: sercom4_uart_default {
+		group1 {
+			pinmux = <PB12C_SERCOM4_PAD0>,
+				 <PB13C_SERCOM4_PAD1>;
+		};
+	};
+
+	usb_dc_default: usb_dc_default {
+		group1 {
+			pinmux = <PA25H_USB_DP>,
+				 <PA24H_USB_DM>;
+		};
+	};
+};