dts: x86: intel: panther_lake: Update RTC to support MFD method

akanisetti · cfriedt · commit e200719c2b1e · 2025-10-05T10:06:05.000-04:00
Updated RTC to support MFD method on panther lake platform
and board config to include alarm and update tests.
-boards/intel/ptl/
-dts/x86/intel/
-tests/drivers/rtc/rtc_api/

Signed-off-by: Anisetti Avinash Krishna &lt;anisetti.avinash.krishna@intel.com&gt;
diff --git a/boards/intel/ptl/intel_ptl_h_crb.dts b/boards/intel/ptl/intel_ptl_h_crb.dts
@@ -36,6 +36,10 @@
 	status = "okay";
 };
 
+&mfd {
+	status = "okay";
+};
+
 &smbus0 {
 	status = "okay";
 };
diff --git a/dts/x86/intel/panther_lake_h.dtsi b/dts/x86/intel/panther_lake_h.dtsi
@@ -302,12 +302,25 @@
 			status = "disabled";
 		};
 
-		rtc: counter: rtc@70 {
-			compatible = "motorola,mc146818";
-			reg = <0x70 0x0D 0x71 0x0D>;
-			interrupts = <8 IRQ_TYPE_LOWEST_EDGE_RISING 3>;
-			interrupt-parent = <&intc>;
-			alarms-count = <1>;
+		mfd: mfd@70 {
+			compatible = "motorola,mc146818-mfd";
+			reg = <0x70 0x01 0x71 0x01 0x72 0x01 0x73 0x01>;
+
+			rtc: counter: rtc {
+				compatible = "motorola,mc146818";
+				interrupts = <8 IRQ_TYPE_LOWEST_EDGE_RISING 3>;
+				interrupt-parent = <&intc>;
+				alarms-count = <1>;
+
+				status = "disabled";
+			};
+
+			bbram: bbram {
+				compatible = "motorola,mc146818-bbram";
+				size = <241>;
+				status = "disabled";
+			};
+
 			status = "disabled";
 		};
 
diff --git a/tests/drivers/rtc/rtc_api/boards/intel_ptl_h_crb.conf b/tests/drivers/rtc/rtc_api/boards/intel_ptl_h_crb.conf
@@ -0,0 +1,2 @@
+CONFIG_RTC_ALARM=y
+CONFIG_RTC_UPDATE=y

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+CONFIG_RTC_ALARM=y`
	`2`	`+CONFIG_RTC_UPDATE=y`