tests: drivers: adc: Add tests support for ADC driver on EK-RA2A1 board

Thinh Le Cong · duynguyenxa · commit 74e3ed616057 · 2025-10-06T14:03:54.000Z
Add Renesas EK-RA2A1 board support for these tests:

- tests/drivers/adc/adc_api
- tests/drivers/adc/adc_accuracy_test

Signed-off-by: Thinh Le Cong &lt;thinh.le.xr@bp.renesas.com&gt;
diff --git a/tests/drivers/adc/adc_accuracy_test/Kconfig b/tests/drivers/adc/adc_accuracy_test/Kconfig
@@ -23,6 +23,10 @@ config NUMBER_OF_PASSES
 	int "Number of passes"
 	default 5
 
+config TEST_ADC_CALIBRATE_REQUIRED
+	bool "Require calibrate field in ADC test"
+	default y if DT_HAS_RENESAS_RA_ADC_16_ENABLED
+
 if DAC_SOURCE_TEST
 
 config DAC_BUFFER_NOT_SUPPORTED
diff --git a/tests/drivers/adc/adc_accuracy_test/boards/ek_ra2a1.overlay b/tests/drivers/adc/adc_accuracy_test/boards/ek_ra2a1.overlay
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2024-2025 Renesas Electronics Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	zephyr,user {
+		io-channels = <&adc0 3>;
+		dac = <&dac0>;
+		dac-channel-id = <0>;
+		dac-resolution = <12>;
+	};
+};
+
+&pinctrl {
+	adc0_default: adc0_default {
+		group1 {
+			/* input */
+			psels = <RA_PSEL(RA_PSEL_ADC, 0, 15)>;
+			renesas,analog-enable;
+		};
+	};
+};
+
+&adc0{
+	#address-cells = <1>;
+	#size-cells = <0>;
+	interrupts = <31 1>;
+	interrupt-names = "scanend";
+	status = "okay";
+
+	/*
+	 * Channel 3 is used in single ended mode, with 15 bit resolution
+	 */
+	channel@3 {
+		reg = <3>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_EXTERNAL0";
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,resolution = <15>;
+		zephyr,vref-mv = <3300>;
+	};
+};
diff --git a/tests/drivers/adc/adc_accuracy_test/src/dac_source.c b/tests/drivers/adc/adc_accuracy_test/src/dac_source.c
@@ -43,6 +43,9 @@ static int test_dac_to_adc(void)
 	struct adc_sequence sequence = {
 		.buffer      = &sample_buffer,
 		.buffer_size = sizeof(sample_buffer),
+#if CONFIG_TEST_ADC_CALIBRATE_REQUIRED
+		.calibrate = true,
+#endif
 	};
 
 	const struct device *dac_dev = init_dac();
diff --git a/tests/drivers/adc/adc_accuracy_test/testcase.yaml b/tests/drivers/adc/adc_accuracy_test/testcase.yaml
@@ -12,20 +12,8 @@ tests:
       fixture: dac_adc_loopback
     platform_allow:
       - frdm_k64f
-  drivers.adc.accuracy.ref_volt:
-    harness_config:
-      fixture: adc_ref_volt
-    platform_allow:
-      - frdm_kl25z
-      - ek_ra8m1
-      - frdm_mcxc242
-      - frdm_mcxc444
-      - nrf52840dk/nrf52840
-      - nrf54h20dk/nrf54h20/cpuapp
-      - nrf54l15dk/nrf54l15/cpuapp
-      - nrf54lm20dk/nrf54lm20a/cpuapp
-      - ophelia4ev/nrf54l15/cpuapp
       - ek_ra8d1
+      - ek_ra8m1
       - mck_ra8t1
       - ek_ra6e2
       - ek_ra6m1
@@ -36,14 +24,32 @@ tests:
       - fpb_ra6e1
       - fpb_ra6e2
       - ek_ra4e2
+      - ek_ra4l1
+      - ek_ra4m1
       - ek_ra4m2
       - ek_ra4m3
       - ek_ra4w1
+      - fpb_ra4e1
+      - ek_ra2a1
+      - ek_ra2l1
+  drivers.adc.accuracy.ref_volt:
+    harness_config:
+      fixture: adc_ref_volt
+    platform_allow:
+      - frdm_kl25z
+      - frdm_mcxc242
+      - frdm_mcxc444
+      - nrf52840dk/nrf52840
+      - nrf54h20dk/nrf54h20/cpuapp
+      - nrf54l15dk/nrf54l15/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
+      - ophelia4ev/nrf54l15/cpuapp
       - xg24_dk2601b
       - xg24_rb4187c
       - xg27_dk2602a
       - xg29_rb4412a
       - bg29_rb4420a
+      - ek_ra4c1
     integration_platforms:
       - frdm_kl25z
       - nrf54l15dk/nrf54l15/cpuapp
diff --git a/tests/drivers/adc/adc_api/Kconfig b/tests/drivers/adc/adc_api/Kconfig
@@ -13,3 +13,7 @@ config ADC_API_SAMPLE_INTERVAL_US
 
 config ADC_32_BITS_DATA
 	bool "ADC data is 32-bits long"
+
+config TEST_ADC_CALIBRATE_REQUIRED
+	bool "Require calibrate field in ADC test"
+	default y if DT_HAS_RENESAS_RA_ADC_16_ENABLED
diff --git a/tests/drivers/adc/adc_api/boards/ek_ra2a1.overlay b/tests/drivers/adc/adc_api/boards/ek_ra2a1.overlay
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2025 Renesas Electronics Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	zephyr,user {
+		io-channels = <&adc0 0>, <&adc0 1>;
+	};
+};
+
+&pinctrl {
+	adc0_default: adc0_default {
+		group1 {
+			/* input */
+			psels = <RA_PSEL(RA_PSEL_ADC, 5, 0)>,
+				<RA_PSEL(RA_PSEL_ADC, 5, 1)>;
+			renesas,analog-enable;
+		};
+	};
+};
+
+&adc0 {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	interrupts = <31 1>;
+	interrupt-names = "scanend";
+
+	/*
+	 * Channel 0 is used in single ended mode, with 15 bit resolution
+	 */
+	channel@0 {
+		reg = <0>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_EXTERNAL0";
+		zephyr,resolution = <15>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,vref-mv = <3300>;
+	};
+
+	/*
+	 * Channel 1 is used in single ended mode, with 15 bit resolution
+	 */
+	channel@1 {
+		reg = <1>;
+		zephyr,gain = "ADC_GAIN_1";
+		zephyr,reference = "ADC_REF_EXTERNAL0";
+		zephyr,resolution = <15>;
+		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
+		zephyr,vref-mv = <3300>;
+	};
+};
diff --git a/tests/drivers/adc/adc_api/src/test_adc.c b/tests/drivers/adc/adc_api/src/test_adc.c
@@ -136,6 +136,9 @@ static int test_task_one_channel(void)
 	struct adc_sequence sequence = {
 		.buffer = m_sample_buffer,
 		.buffer_size = sizeof(m_sample_buffer),
+#if CONFIG_TEST_ADC_CALIBRATE_REQUIRED
+		.calibrate = true,
+#endif
 	};
 
 	init_adc();
@@ -163,6 +166,9 @@ static int test_task_multiple_channels(void)
 	struct adc_sequence sequence = {
 		.buffer      = m_sample_buffer,
 		.buffer_size = sizeof(m_sample_buffer),
+#if CONFIG_TEST_ADC_CALIBRATE_REQUIRED
+		.calibrate = true,
+#endif
 	};
 
 	init_adc();
@@ -210,6 +216,9 @@ static int test_task_asynchronous_call(void)
 		.options     = &options,
 		.buffer      = m_sample_buffer,
 		.buffer_size = sizeof(m_sample_buffer),
+#if CONFIG_TEST_ADC_CALIBRATE_REQUIRED
+		.calibrate = true,
+#endif
 	};
 	struct k_poll_event  async_evt =
 		K_POLL_EVENT_INITIALIZER(K_POLL_TYPE_SIGNAL,
@@ -272,6 +281,9 @@ static int test_task_with_interval(void)
 		.options     = &options,
 		.buffer      = m_sample_buffer,
 		.buffer_size = sizeof(m_sample_buffer),
+#if CONFIG_TEST_ADC_CALIBRATE_REQUIRED
+		.calibrate = true,
+#endif
 	};
 
 	init_adc();
@@ -349,6 +361,9 @@ static int test_task_repeated_samplings(void)
 		.options     = &options,
 		.buffer      = m_sample_buffer,
 		.buffer_size = sizeof(m_sample_buffer),
+#if CONFIG_TEST_ADC_CALIBRATE_REQUIRED
+		.calibrate = true,
+#endif
 	};
 
 	init_adc();
@@ -383,6 +398,9 @@ static int test_task_invalid_request(void)
 		.buffer      = m_sample_buffer,
 		.buffer_size = sizeof(m_sample_buffer),
 		.resolution  = 0, /* intentionally invalid value */
+#if CONFIG_TEST_ADC_CALIBRATE_REQUIRED
+		.calibrate = true,
+#endif
 	};
 
 	init_adc();
