fix(esp_driver_uart): always use heap_caps_malloc to malloc memory base on flags

components/esp_driver_uart/test_apps/uart/main/CMakeLists.txt

@@ -2,6 +2,6 @@
 # the component can be registered as WHOLE_ARCHIVE
 idf_component_register(
     SRCS "test_app_main.c" "test_uart.c"
-    REQUIRES esp_driver_uart unity
+    REQUIRES esp_driver_uart unity esp_psram
     WHOLE_ARCHIVE
 )

components/esp_driver_uart/test_apps/uart/pytest_uart.py

@@ -5,6 +5,7 @@ import pytest
 
 
 @pytest.mark.supported_targets
+@pytest.mark.temp_skip_ci(targets=['esp32s3'], reason='skip due to duplication with test_uart_single_dev_psram')
 @pytest.mark.generic
 @pytest.mark.parametrize(
     'config',
@@ -16,3 +17,17 @@ import pytest
 )
 def test_uart_single_dev(case_tester) -> None:                # type: ignore
     case_tester.run_all_normal_cases(reset=True)
+
+
+@pytest.mark.esp32s3
+@pytest.mark.octal_psram
+@pytest.mark.parametrize(
+    'config',
+    [
+        'iram_safe',
+        'release',
+    ],
+    indirect=True,
+)
+def test_uart_single_dev_psram(case_tester) -> None:          # type: ignore
+    case_tester.run_all_normal_cases(reset=True)

components/esp_driver_uart/test_apps/uart/sdkconfig.defaults.esp32s3

@@ -0,0 +1,4 @@
+CONFIG_SPIRAM=y
+CONFIG_SPIRAM_MODE_OCT=y
+CONFIG_SPIRAM_SPEED_80M=y
+CONFIG_SPIRAM_MALLOC_ALWAYSINTERNAL=0