tests: benchmarks: multicore: Test PM in SPI driver with locks

Extend test that checks:
- current consumption in IDLE, S2RAM when SPIM was used;
- SPIM works correctly after leaving low power state.

Add test suites where SPI is configured with
SPI_HOLD_ON_CS and/or SPI_LOCK_ON.

Confirm that SPI CS line activation/deactivation is
according to:
- SPI_HOLD_ON_CS configuration;
- spi_release_dt() calls;
- not affected by the Device Runtime Power Management.

Signed-off-by: Sebastian Głąb <[email protected]>

tests/benchmarks/multicore/idle_spim_loopback/Kconfig

@@ -5,10 +5,10 @@
 #
 
 config TEST_SLEEP_DURATION_MS
-	int "Amount of time (in miliseconds) the core is sleeping"
+	int "Amount of time (in milliseconds) the core is sleeping"
 	default 1000
 	help
-	  Set sleep duration to TEST_SLEEP_DURATION_MS miliseconds.
+	  Set sleep duration to TEST_SLEEP_DURATION_MS milliseconds.
 	  Based on the value of 'min-residency-us' specified for each power state defined in the DTS,
 	  core enters the lowest possible power state.
 
@@ -19,4 +19,32 @@ config DATA_FIELD
 	  Set number of bytes exchanged in single spi_transceive() operation.
 	  Values from 1 to 16 bytes are confirmed to work correctly.
 
+config TEST_SPI_HOLD_ON_CS
+	bool "Enable / Disable test for SPI chip select hold"
+	help
+	  By default, each spi_transceive_dt() activates SPI CS signal before transmission and
+	  deactivates it after the transmission has completed.
+	  When this KConfig is enabled, first SPI transmission activates SPI CS signal and
+	  it is kept active until spi_release() is executed.
+
+config TEST_SPI_LOCK_ON
+	bool "Test with SPI lock enabled/disabled"
+	help
+	  Keep the device locked after the transaction for the current config.
+	  I have no idea what it does.
+	  When this KConfig is enabled, SPI device is locked until spi_release() is executed.
+
+config TEST_SPI_RELEASE_BEFORE_SLEEP
+	bool "Enable / Disable release of the SPI device"
+	depends on TEST_SPI_HOLD_ON_CS || TEST_SPI_LOCK_ON
+	default y
+	help
+	  When this KConfig is enabled, SPI is released before entering low power state.
+	  When TEST_SPI_HOLD_ON_CS=y and TEST_SPI_RELEASE_BEFORE_SLEEP=y then
+	  each test iteration will see one rising and one falling edge on SPI CS signal.
+	  When TEST_SPI_HOLD_ON_CS=y and TEST_SPI_RELEASE_BEFORE_SLEEP=n then
+	  first test iteration will see SPI CS signal activation. Next test iterations
+	  will NOT observe changes on SPI CS signal.
+
+
 source "Kconfig.zephyr"

tests/benchmarks/multicore/idle_spim_loopback/boards/nrf54h20dk_nrf54h20_cpuapp.overlay

@@ -4,6 +4,23 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+/* Test requires two wire connections:
+ *  - SPIM_MOSI with SPIM_MISO -> P0.07 - P0.06;
+ *  - SPI cs-gpios with test-gpios -> P0.10 - P0.11.
+ * Test-gpios and cs-gpios must have identical active level flag.
+ */
+
+/ {
+	zephyr,user {
+		test-gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&gpiote130 {
+	status = "okay";
+	owned-channels = <0>;
+};
+
 &pinctrl {
 	spi130_default_alt: spi130_default_alt {
 		group1 {
@@ -31,6 +48,7 @@
 	pinctrl-names = "default", "sleep";
 	overrun-character = <0x00>;
 	memory-regions = <&cpuapp_dma_region>;
+	cs-gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
 	zephyr,pm-device-runtime-auto;
 	dut_spi_dt: test-spi-dev@0 {
 		compatible = "vnd,spi-device";

tests/benchmarks/multicore/idle_spim_loopback/boards/nrf54h20dk_nrf54h20_cpuapp_fast.overlay

@@ -4,6 +4,23 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+/* Test requires two wire connections:
+ *  - SPIM_MOSI with SPIM_MISO -> P7.06 - P7.07;
+ *  - SPI cs-gpios with test-gpios -> P0.10 - P0.11.
+ * Test-gpios and cs-gpios must have identical active level flag.
+ */
+
+/ {
+	zephyr,user {
+		test-gpios = <&gpio0 11 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&gpiote130 {
+	status = "okay";
+	owned-channels = <0>;
+};
+
 &pinctrl {
 	spi120_default: spi120_default {
 		group1 {
@@ -36,6 +53,7 @@
 	pinctrl-names = "default", "sleep";
 	overrun-character = <0x00>;
 	memory-regions = <&dma_fast_region>;
+	cs-gpios = <&gpio0 10 GPIO_ACTIVE_HIGH>;
 	zephyr,pm-device-runtime-auto;
 	dut_spi_dt: test-spi-dev@0 {
 		compatible = "vnd,spi-device";

tests/benchmarks/multicore/idle_spim_loopback/prj.conf

@@ -1,5 +1,8 @@
 CONFIG_PRINTK=y
 CONFIG_LOG=y
 CONFIG_SPI=y
+CONFIG_GPIO=y
+
+CONFIG_ASSERT=y
 
 CONFIG_NRF_REGTOOL_VERBOSITY=1

tests/benchmarks/multicore/idle_spim_loopback/prj_s2ram.conf

@@ -17,4 +17,5 @@ CONFIG_UART_CONSOLE=n
 CONFIG_SERIAL=n
 
 CONFIG_SPI=y
+CONFIG_GPIO=y
 CONFIG_ASSERT=y