boards: frdm_mcxn947: Add support for dac

Add support for dac

Signed-off-by: Zhaoxiang Jin <Zhaoxiang.Jin_1@nxp.com>

boards/nxp/frdm_mcxn947/board.c

@@ -132,6 +132,22 @@ static int frdm_mcxn947_init(void)
 	CLOCK_EnableClock(kCLOCK_Gpio5);
 #endif
 
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(dac0), okay)
+	SPC_EnableActiveModeAnalogModules(SPC0, kSPC_controlDac0);
+	CLOCK_SetClkDiv(kCLOCK_DivDac0Clk, 1u);
+	CLOCK_AttachClk(kFRO_HF_to_DAC0);
+
+	CLOCK_EnableClock(kCLOCK_Dac0);
+#endif
+
+#if DT_NODE_HAS_STATUS(DT_NODELABEL(dac1), okay)
+	SPC_EnableActiveModeAnalogModules(SPC0, kSPC_controlDac1);
+	CLOCK_SetClkDiv(kCLOCK_DivDac1Clk, 1u);
+	CLOCK_AttachClk(kFRO_HF_to_DAC1);
+
+	CLOCK_EnableClock(kCLOCK_Dac1);
+#endif
+
 	/* Set SystemCoreClock variable. */
 	SystemCoreClock = CLOCK_INIT_CORE_CLOCK;
 

boards/nxp/frdm_mcxn947/doc/index.rst

@@ -69,6 +69,8 @@ The FRDM-MCXN947 board configuration supports the following hardware features:
 +-----------+------------+-------------------------------------+
 | FLEXSPI   | on-chip    | flash programming                   |
 +-----------+------------+-------------------------------------+
+| DAC       | on-chip    | dac                                 |
++-----------+------------+-------------------------------------+
 
 Targets available
 ==================

boards/nxp/frdm_mcxn947/frdm_mcxn947-pinctrl.dtsi

@@ -49,4 +49,12 @@
 			bias-pull-up;
 		};
 	};
+
+	pinmux_dac0: pinmux_dac0 {
+		group0 {
+			pinmux = <DAC0_OUT_PIO4_2>;
+			drive-strength = "low";
+			slew-rate = "fast";
+		};
+	};
 };

boards/nxp/frdm_mcxn947/frdm_mcxn947.dtsi

@@ -131,3 +131,8 @@
 		};
 	};
 };
+
+&dac0 {
+	pinctrl-0 = <&pinmux_dac0>;
+	pinctrl-names = "default";
+};

boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.dts

@@ -92,3 +92,7 @@
 &w25q64jvssiq {
 	status = "okay";
 };
+
+&dac0 {
+	status = "okay";
+};

boards/nxp/frdm_mcxn947/frdm_mcxn947_mcxn947_cpu0.yaml

@@ -18,4 +18,5 @@ supported:
   - dma
   - gpio
   - spi
+  - dac
 vendor: nxp