boards: nxp: frdm_mcxa156: Support lpi2c for NXP frdm_mcxa156 board

Support lpi2c for NXP frdm_mcxa156 board.

Signed-off-by: Neil Chen <cheng.chen_1@nxp.com>

boards/nxp/frdm_mcxa156/board.c

@@ -137,6 +137,26 @@ static int frdm_mcxa156_init(void)
 	SPC_EnableActiveModeAnalogModules(SPC0, (kSPC_controlCmp0 | kSPC_controlCmp0Dac));
 #endif
 
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c0))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C0, 1u);
+	CLOCK_AttachClk(kFRO12M_to_LPI2C0);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c1))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C1, 1u);
+	CLOCK_AttachClk(kFRO12M_to_LPI2C1);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c2))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C2, 1u);
+	CLOCK_AttachClk(kFRO12M_to_LPI2C2);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c3))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C3, 1u);
+	CLOCK_AttachClk(kFRO12M_to_LPI2C3);
+#endif
+
 #if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lptmr0))
 
 /*

boards/nxp/frdm_mcxa156/doc/index.rst

@@ -58,6 +58,8 @@ The FRDM-MCXA156 board configuration supports the following hardware features:
 +-----------+------------+-------------------------------------+
 | DAC       | on-chip    | dac                                 |
 +-----------+------------+-------------------------------------+
+| I2C       | on-chip    | i2c                                 |
++-----------+------------+-------------------------------------+
 | LPCMP     | on-chip    | sensor(comparator)                  |
 +-----------+------------+-------------------------------------+
 | LPTMR     | on-chip    | counter                             |

boards/nxp/frdm_mcxa156/frdm_mcxa156-pinctrl.dtsi

@@ -47,4 +47,37 @@
 			bias-pull-up;
 		};
 	};
+	pinmux_lpi2c0: pinmux_lpi2c0 {
+		group0 {
+			pinmux = <LPI2C0_SDA_P0_16>,
+			    <LPI2C0_SCL_P0_17>;
+			slew-rate = "fast";
+			drive-strength = "low";
+			input-enable;
+			bias-pull-up;
+			drive-open-drain;
+		};
+	};
+	pinmux_lpi2c2: pinmux_lpi2c2 {
+		group0 {
+			pinmux = <LPI2C2_SDA_P1_8>,
+			    <LPI2C2_SCL_P1_9>;
+			slew-rate = "fast";
+			drive-strength = "low";
+			input-enable;
+			bias-pull-up;
+			drive-open-drain;
+		};
+	};
+	pinmux_lpi2c3: pinmux_lpi2c3 {
+		group0 {
+			pinmux = <LPI2C3_SDA_P3_28>,
+			    <LPI2C3_SCL_P3_27>;
+			slew-rate = "fast";
+			drive-strength = "low";
+			input-enable;
+			bias-pull-up;
+			drive-open-drain;
+		};
+	};
 };

boards/nxp/frdm_mcxa156/frdm_mcxa156.dts

@@ -114,6 +114,18 @@
 	pinctrl-names = "default";
 };
 
+&lpi2c0 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_lpi2c0>;
+	pinctrl-names = "default";
+};
+
+&lpi2c3 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_lpi2c3>;
+	pinctrl-names = "default";
+};
+
 &lptmr0 {
 	status = "okay";
 };

boards/nxp/frdm_mcxa156/frdm_mcxa156.yaml

@@ -20,6 +20,7 @@ supported:
   - gpio
   - counter
   - dac
+  - i2c
   - pwm
   - usb_device
   - usbd