samples: drivers: watchdog stm32 wwdg decrease apb clock

The most of the wwdg peripherals requires a reduced apb clock to pass the sample.drivers.watchdog.stm32_wwdg testcase. This apb1 prescaler is added to the overlay file for that particular clock. Specific overlay for the stm32h7 family because of the APB1 bus clock named d2ppre1. Signed-off-by: Francois Ramu <[email protected]>
chrta · Nov 11, 2022 · 838cd28 · 838cd28
1 parent 21c4bbe
commit 838cd28
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Showing 4 changed files with 43 additions and 1 deletion.
diff --git a/samples/drivers/watchdog/boards/stm32_wwdg.overlay b/samples/drivers/watchdog/boards/stm32_wwdg.overlay
@@ -10,6 +10,10 @@
 	};
 };
 
+&rcc {
+	apb1-prescaler = <16>;
+};
+
 &wwdg {
 	status = "okay";
 };

diff --git a/samples/drivers/watchdog/boards/stm32f3_disco.overlay b/samples/drivers/watchdog/boards/stm32f3_disco.overlay
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2021 Thomas Stranger
+ * Copyright (c) 2022 STMicroelectronics
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&rcc {
+	apb1-prescaler = <8>;
+};
diff --git a/samples/drivers/watchdog/boards/stm32h7_wwdg.overlay b/samples/drivers/watchdog/boards/stm32h7_wwdg.overlay
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2021 Thomas Stranger
+ * Copyright (c) 2022 STMicroelectronics
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	aliases {
+		watchdog0 = &wwdg;
+	};
+};
+
+&rcc {
+	d2ppre1 = <16>;
+};
+
+&wwdg {
+	status = "okay";
+};
+
+&iwdg {
+	status = "disabled";
+};
diff --git a/samples/drivers/watchdog/sample.yaml b/samples/drivers/watchdog/sample.yaml
@@ -19,8 +19,12 @@ tests:
     extra_args: DTC_OVERLAY_FILE=boards/stm32_wwdg.overlay
     filter: dt_compat_enabled("st,stm32-window-watchdog")
     platform_allow: b_u585i_iot02a nucleo_f091rc nucleo_f103rb nucleo_f207zg nucleo_f429zi
-        nucleo_f746zg nucleo_g071rb nucleo_g474re nucleo_h743zi nucleo_l073rz nucleo_l152re
+        nucleo_f746zg nucleo_g071rb nucleo_g474re nucleo_l073rz nucleo_l152re
         nucleo_wb55rg nucleo_wl55jc stm32f3_disco stm32l562e_dk disco_l475_iot1
+  sample.drivers.watchdog.stm32h7_wwdg:
+    extra_args: DTC_OVERLAY_FILE=boards/stm32h7_wwdg.overlay
+    filter: dt_compat_enabled("st,stm32-window-watchdog")
+    platform_allow: nucleo_h743zi
   sample.drivers.watchdog.stm32_iwdg:
     extra_args: DTC_OVERLAY_FILE=boards/stm32_iwdg.overlay
     filter: dt_compat_enabled("st,stm32-watchdog")
-Original file line number
+Diff line change
@@ Expand Up / @@ -10,6 +10,10 @@ @@
     	};
     };
+    &rcc {
+    	apb1-prescaler = <16>;
+    };
     &wwdg {
     	status = "okay";
     };
@@ Expand Down @@