tests: drivers: spi: spi_loopback: Add MAX32666FTHR

Enable SPI test for MAX32666FTHR board

Signed-off-by: Sadik Ozer <[email protected]>

Author: ozersa

tests/drivers/spi/spi_loopback/boards/max32666fthr_max32666_cpu0.conf

@@ -0,0 +1,7 @@
+#
+# Copyright (c) 2023-2024 Analog Devices, Inc.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+CONFIG_SPI_ASYNC=y
+CONFIG_SPI_MAX32_INTERRUPT=y

tests/drivers/spi/spi_loopback/boards/max32666fthr_max32666_cpu0.overlay

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2023-2024 Analog Devices, Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&spi1 {
+	status = "okay";
+	pinctrl-0 = <&spi1_mosi_p0_17 &spi1_miso_p0_18 &spi1_sck_p0_19 &spi1_ss0_p0_16>;
+	pinctrl-names = "default";
+
+	slow@0 {
+		compatible = "test-spi-loopback-slow";
+		reg = <0>;
+		spi-max-frequency = <128000>;
+	};
+	fast@0 {
+		compatible = "test-spi-loopback-fast";
+		reg = <0>;
+		spi-max-frequency = <500000>;
+	};
+};