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-rw-r--r--ports/zephyr/boards/rpi_pico2_rp2350a_m33.conf17
-rw-r--r--ports/zephyr/boards/rpi_pico2_rp2350a_m33.overlay50
2 files changed, 67 insertions, 0 deletions
diff --git a/ports/zephyr/boards/rpi_pico2_rp2350a_m33.conf b/ports/zephyr/boards/rpi_pico2_rp2350a_m33.conf
new file mode 100644
index 000000000..846012724
--- /dev/null
+++ b/ports/zephyr/boards/rpi_pico2_rp2350a_m33.conf
@@ -0,0 +1,17 @@
+# Configure serial console over USB CDC ACM.
+CONFIG_USB_DEVICE_STACK_NEXT=y
+CONFIG_USBD_CDC_ACM_CLASS=y
+CONFIG_UART_LINE_CTRL=y
+
+# Disable networking.
+CONFIG_NETWORKING=n
+
+# Hardware features.
+CONFIG_FLASH=y
+CONFIG_FLASH_MAP=y
+CONFIG_I2C=y
+CONFIG_I2C_TARGET=y
+CONFIG_SPI=y
+
+# MicroPython config.
+CONFIG_MICROPY_HEAP_SIZE=458752
diff --git a/ports/zephyr/boards/rpi_pico2_rp2350a_m33.overlay b/ports/zephyr/boards/rpi_pico2_rp2350a_m33.overlay
new file mode 100644
index 000000000..e5261561f
--- /dev/null
+++ b/ports/zephyr/boards/rpi_pico2_rp2350a_m33.overlay
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2025 MASSDRIVER EI (massdriver.space)
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+ chosen {
+ /* Use USB CDC ACM as the console. */
+ zephyr,console = &cdc_acm_uart0;
+ };
+};
+
+&flash0 {
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ second_stage_bootloader: partition@0 {
+ label = "second_stage_bootloader";
+ reg = <0x00000000 0x100>;
+ read-only;
+ };
+
+ code_partition: partition@100 {
+ label = "code-partition";
+ reg = <0x0000100 (DT_SIZE_M(1) - 0x100)>;
+ read-only;
+ };
+
+ storage_partition: partition@100000 {
+ label = "storage";
+ reg = <0x00100000 DT_SIZE_M(3)>;
+ };
+ };
+};
+
+&zephyr_udc0 {
+ cdc_acm_uart0: cdc_acm_uart0 {
+ compatible = "zephyr,cdc-acm-uart";
+ };
+};
+
+&i2c1 {
+ clock-frequency = <I2C_BITRATE_STANDARD>;
+ status = "okay";
+ pinctrl-0 = <&i2c1_default>;
+ pinctrl-names = "default";
+};