tests: drivers: spi: Add test for the SPI_DT_SPEC initializer macro

Adds a new test for the SPI_DT_SPEC initializer macro to reproduce the
XCC build failure reported in #43745 on the intel_adsp_cavs15 board.

Signed-off-by: Maureen Helm <[email protected]>

Author: MaureenHelm

tests/drivers/spi/dt_spec/CMakeLists.txt

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: Apache-2.0
+
+cmake_minimum_required(VERSION 3.20.0)
+
+find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
+project(spi_dt_spec)
+
+FILE(GLOB app_sources src/*.c)
+target_sources(app PRIVATE ${app_sources})

tests/drivers/spi/dt_spec/app.overlay

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2020 Nordic Semiconductor ASA
+ * Copyright (c) 2022 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ */
+
+/ {
+	test {
+		#address-cells = <0x1>;
+		#size-cells = <0x1>;
+
+		test_gpio: gpio@deadbeef {
+			compatible = "vnd,gpio";
+			gpio-controller;
+			reg = <0xdeadbeef 0x1000>;
+			#gpio-cells = <0x2>;
+			label = "TEST_GPIO";
+			status = "okay";
+		};
+
+		test_spi_cs: spi@33334444 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "vnd,spi";
+			reg = <0x33334444 0x1000>;
+			label = "TEST_SPI_CTLR_CS";
+			status = "okay";
+			clock-frequency = <2000000>;
+
+			cs-gpios = <&test_gpio 0x10 0x20>;
+
+			test_spi_dev_cs: test-spi-dev@0 {
+				compatible = "vnd,spi-device";
+				label = "TEST_SPI_DEV_0";
+				reg = <0>;
+				spi-max-frequency = <2000000>;
+			};
+		};
+
+		test_spi_no_cs: spi@55556666 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "vnd,spi";
+			reg = <0x55556666 0x1000>;
+			label = "TEST_SPI_CTLR_NO_CS";
+			status = "okay";
+			clock-frequency = <2000000>;
+
+			test_spi_dev_no_cs: test-spi-dev@0 {
+				compatible = "vnd,spi-device";
+				label = "TEST_SPI_DEV_NO_CS";
+				reg = <0>;
+				spi-max-frequency = <2000000>;
+			};
+		};
+	};
+};

tests/drivers/spi/dt_spec/prj.conf

@@ -0,0 +1,3 @@
+CONFIG_ZTEST=y
+CONFIG_SPI=y
+CONFIG_GPIO=y

tests/drivers/spi/dt_spec/src/main.c

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2022 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <ztest.h>
+#include <devicetree.h>
+#include <device.h>
+#include <drivers/spi.h>
+#include <logging/log.h>
+
+LOG_MODULE_REGISTER(test, CONFIG_LOG_DEFAULT_LEVEL);
+
+static void test_dt_spec(void)
+{
+	const struct spi_dt_spec spi_cs =
+		SPI_DT_SPEC_GET(DT_NODELABEL(test_spi_dev_cs), 0, 0);
+
+	LOG_DBG("spi_cs.bus = %p", spi_cs.bus);
+	LOG_DBG("spi_cs.config.cs->gpio_dev = %p", spi_cs.config.cs->gpio_dev);
+	LOG_DBG("spi_cs.config.cs->gpio.port = %p", spi_cs.config.cs->gpio.port);
+
+	zassert_equal(spi_cs.bus, DEVICE_DT_GET(DT_NODELABEL(test_spi_cs)), "");
+	zassert_equal(spi_cs.config.cs->gpio_dev, DEVICE_DT_GET(DT_NODELABEL(test_gpio)), "");
+	zassert_equal(spi_cs.config.cs->gpio.port, DEVICE_DT_GET(DT_NODELABEL(test_gpio)), "");
+
+	const struct spi_dt_spec spi_no_cs =
+		SPI_DT_SPEC_GET(DT_NODELABEL(test_spi_dev_no_cs), 0, 0);
+
+	LOG_DBG("spi_no_cs.bus = %p", spi_no_cs.bus);
+	LOG_DBG("spi_no_cs.config.cs = %p", spi_no_cs.config.cs);
+
+	zassert_equal(spi_no_cs.bus, DEVICE_DT_GET(DT_NODELABEL(test_spi_no_cs)), "");
+	zassert_is_null(spi_no_cs.config.cs, "");
+}
+
+void test_main(void)
+{
+	ztest_test_suite(spi_dt_spec,
+			 ztest_unit_test(test_dt_spec)
+			);
+	ztest_run_test_suite(spi_dt_spec);
+}

tests/drivers/spi/dt_spec/testcase.yaml

@@ -0,0 +1,4 @@
+tests:
+  drivers.spi.dt_spec:
+    tags: drivers spi devicetree
+    depends_on: spi gpio