boards: Enable cmp on frdm_mcxc242

Enable cmp on frdm_mcxc242

Signed-off-by: Zhaoxiang Jin <[email protected]>

Author: ZhaoxiangJin

boards/nxp/frdm_mcxc242/frdm_mcxc242-pinctrl.dtsi

@@ -70,4 +70,11 @@
 			slew-rate = "slow";
 		};
 	};
+	pinmux_cmp: pinmux_cmp {
+		group0 {
+			pinmux = <CMP0_IN0_PTC6>;
+			drive-strength = "high";
+			slew-rate = "fast";
+		};
+	};
 };

boards/nxp/frdm_mcxc242/frdm_mcxc242.dts

@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 NXP
+ * Copyright 2024-2025 NXP
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -200,3 +200,9 @@ zephyr_udc0: &usb {
 &pit0_channel1 {
 	status = "okay";
 };
+
+&cmp {
+	status = "okay";
+	pinctrl-0 = <&pinmux_cmp>;
+	pinctrl-names = "default";
+};

dts/arm/nxp/nxp_mcxc_common.dtsi

@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 NXP
+ * Copyright 2024-2025 NXP
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -322,6 +322,14 @@
 				status = "disabled";
 			};
 		};
+
+		cmp: cmp@40073000 {
+			compatible = "nxp,cmp";
+			reg = <0x40073000 0x1000>;
+			interrupts = <16 0>;
+			status = "disabled";
+			clocks = <&sim KINETIS_SIM_CMP_CLK 0 0>;
+		};
 	};
 };