boards: nxp: frdm_mcxa156: Support i3c for NXP frdm_mcxa156 board

Support i3c for NXP frdm_mcxa156 board.
Test it using samples/sensor/thermometer.

Signed-off-by: Neil Chen <[email protected]>

Author: NeilChen93

boards/nxp/frdm_mcxa156/board.c

@@ -165,6 +165,12 @@ void board_early_init_hook(void)
 	CLOCK_AttachClk(kFRO_HF_to_FLEXIO0);
 #endif
 
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(i3c0))
+	/* Attach FRO_HF_DIV clock to I3C, 96MHz / 4 = 24MHz. */
+	CLOCK_SetClockDiv(kCLOCK_DivI3C0_FCLK, 4U);
+	CLOCK_AttachClk(kFRO_HF_DIV_to_I3C0FCLK);
+#endif
+
 #if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpadc0))
 	CLOCK_SetClockDiv(kCLOCK_DivADC0, 1u);
 	CLOCK_AttachClk(kFRO12M_to_ADC0);

boards/nxp/frdm_mcxa156/doc/index.rst

@@ -71,6 +71,8 @@ The FRDM-MCXA156 board configuration supports the following hardware features:
 +-----------+------------+-------------------------------------+
 | I2C       | on-chip    | i2c                                 |
 +-----------+------------+-------------------------------------+
+| I3C       | on-chip    | i3c                                 |
++-----------+------------+-------------------------------------+
 | LPCMP     | on-chip    | sensor(comparator)                  |
 +-----------+------------+-------------------------------------+
 | LPSPI     | on-chip    | spi                                 |

boards/nxp/frdm_mcxa156/frdm_mcxa156-pinctrl.dtsi

@@ -89,6 +89,22 @@
 			drive-strength = "low";
 		};
 	};
+	pinmux_i3c0: pinmux_i3c0 {
+		group0 {
+			pinmux = <I3C0_SDA_P0_16>,
+				<I3C0_SCL_P0_17>;
+			slew-rate = "fast";
+			drive-strength = "low";
+			input-enable;
+			bias-pull-up;
+		};
+		group1 {
+			pinmux = <I3C0_PUR_P1_11>;
+			slew-rate = "fast";
+			drive-strength = "low";
+			input-enable;
+		};
+	};
 	pinmux_lpadc0: pinmux_lpadc0 {
 		group0 {
 			pinmux = <ADC0_A0_P2_0>,

boards/nxp/frdm_mcxa156/frdm_mcxa156.dts

@@ -9,6 +9,7 @@
 #include <nxp/nxp_mcxa156.dtsi>
 #include "frdm_mcxa156-pinctrl.dtsi"
 #include <zephyr/dt-bindings/input/input-event-codes.h>
+#include <freq.h>
 
 / {
 	model = "NXP FRDM_MCXA156 board";
@@ -23,6 +24,7 @@
 		pwm-0 = &flexpwm0_pwm0;
 		mcuboot-button0 = &user_button_2;
 		watchdog0 = &wwdt0;
+		ambient-temp0 = &p3t1755;
 	};
 
 	chosen {
@@ -165,6 +167,22 @@ zephyr_mipi_dbi_parallel: &flexio0_lcd {
 	pinctrl-names = "default";
 };
 
+&i3c0 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_i3c0>;
+	pinctrl-names = "default";
+
+	i2c-scl-hz = <DT_FREQ_K(400)>;
+	i3c-scl-hz = <DT_FREQ_M(4)>;
+	i3c-od-scl-hz = <DT_FREQ_K(1500)>;
+
+	p3t1755: p3t1755@4800000236152a0090 {
+		compatible = "nxp,p3t1755";
+		reg = <0x48 0x0236 0x152a0090>;
+		status = "okay";
+	};
+};
+
 &lpadc0 {
 	status = "okay";
 	pinctrl-0 = <&pinmux_lpadc0>;

boards/nxp/frdm_mcxa156/frdm_mcxa156.yaml

@@ -22,6 +22,7 @@ supported:
   - dac
   - dma
   - i2c
+  - i3c
   - pwm
   - spi
   - usb_device