boards: frdm_mcxa166, frdm_mcxa276: add i2c support

peterwangsz · kartben · commit 8405754a306c · 2025-05-16T19:01:50.000+02:00
1. enable i2c support
2. verified tests/drivers/i2c/i2c_target_api

Signed-off-by: Peter Wang &lt;chaoyi.wang@nxp.com&gt;
diff --git a/boards/nxp/frdm_mcxa166/board.c b/boards/nxp/frdm_mcxa166/board.c
@@ -200,6 +200,26 @@ void board_early_init_hook(void)
 	CLOCK_EnableClock(kCLOCK_GateADC1);
 #endif
 
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c0))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C0, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPI2C0);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c1))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C1, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPI2C1);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c2))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C2, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPI2C2);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c3))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C3, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPI2C3);
+#endif
+
 #endif
 
 #if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lptmr0))
diff --git a/boards/nxp/frdm_mcxa166/frdm_mcxa166-pinctrl.dtsi b/boards/nxp/frdm_mcxa166/frdm_mcxa166-pinctrl.dtsi
@@ -34,4 +34,39 @@
 			drive-strength = "low";
 		};
 	};
+
+	pinmux_lpi2c1: pinmux_lpi2c1 {
+		group0 {
+			pinmux = <LPI2C1_SDA_P1_0>,
+			    <LPI2C1_SCL_P1_1>;
+			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;
+		};
+	};
+
 };
diff --git a/boards/nxp/frdm_mcxa166/frdm_mcxa166.dts b/boards/nxp/frdm_mcxa166/frdm_mcxa166.dts
@@ -126,6 +126,18 @@
 	pinctrl-names = "default";
 };
 
+&lpi2c1 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_lpi2c1>;
+	pinctrl-names = "default";
+};
+
+&lpi2c3 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_lpi2c3>;
+	pinctrl-names = "default";
+};
+
 &flash {
 	partitions {
 		compatible = "fixed-partitions";
diff --git a/boards/nxp/frdm_mcxa166/frdm_mcxa166.yaml b/boards/nxp/frdm_mcxa166/frdm_mcxa166.yaml
@@ -18,6 +18,7 @@ supported:
   - uart
   - flash
   - adc
+  - i2c
   - watchdog
   - counter
   - dma
diff --git a/boards/nxp/frdm_mcxa276/board.c b/boards/nxp/frdm_mcxa276/board.c
@@ -200,6 +200,26 @@ void board_early_init_hook(void)
 	CLOCK_EnableClock(kCLOCK_GateADC1);
 #endif
 
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c0))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C0, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPI2C0);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c1))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C1, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPI2C1);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c2))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C2, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPI2C2);
+#endif
+
+#if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lpi2c3))
+	CLOCK_SetClockDiv(kCLOCK_DivLPI2C3, 1u);
+	CLOCK_AttachClk(kFRO_LF_DIV_to_LPI2C3);
+#endif
+
 #endif
 
 #if DT_NODE_HAS_STATUS_OKAY(DT_NODELABEL(lptmr0))
diff --git a/boards/nxp/frdm_mcxa276/frdm_mcxa276-pinctrl.dtsi b/boards/nxp/frdm_mcxa276/frdm_mcxa276-pinctrl.dtsi
@@ -34,4 +34,39 @@
 			drive-strength = "low";
 		};
 	};
+
+	pinmux_lpi2c1: pinmux_lpi2c1 {
+		group0 {
+			pinmux = <LPI2C1_SDA_P1_0>,
+			    <LPI2C1_SCL_P1_1>;
+			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;
+		};
+	};
+
 };
diff --git a/boards/nxp/frdm_mcxa276/frdm_mcxa276.dts b/boards/nxp/frdm_mcxa276/frdm_mcxa276.dts
@@ -126,6 +126,18 @@
 	pinctrl-names = "default";
 };
 
+&lpi2c1 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_lpi2c1>;
+	pinctrl-names = "default";
+};
+
+&lpi2c3 {
+	status = "okay";
+	pinctrl-0 = <&pinmux_lpi2c3>;
+	pinctrl-names = "default";
+};
+
 &flash {
 	partitions {
 		compatible = "fixed-partitions";
diff --git a/boards/nxp/frdm_mcxa276/frdm_mcxa276.yaml b/boards/nxp/frdm_mcxa276/frdm_mcxa276.yaml
@@ -18,6 +18,7 @@ supported:
   - uart
   - flash
   - adc
+  - i2c
   - watchdog
   - counter
   - dma
diff --git a/dts/arm/nxp/nxp_mcxa166.dtsi b/dts/arm/nxp/nxp_mcxa166.dtsi
@@ -8,6 +8,7 @@
 #include <arm/armv8-m.dtsi>
 #include <zephyr/dt-bindings/clock/mcux_lpc_syscon_clock.h>
 #include <zephyr/dt-bindings/gpio/gpio.h>
+#include <zephyr/dt-bindings/i2c/i2c.h>
 
 / {
 	cpus {
@@ -318,6 +319,50 @@
 			clocks = <&syscon MCUX_LPADC2_CLK>;
 		};
 
+		lpi2c0: i2c@4009a000 {
+			compatible = "nxp,lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x4009a000 0x1000>;
+			interrupts = <26 0>;
+			clocks = <&syscon MCUX_LPI2C0_CLK>;
+			status = "disabled";
+		};
+
+		lpi2c1: i2c@4009b000 {
+			compatible = "nxp,lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x4009b000 0x1000>;
+			interrupts = <27 0>;
+			clocks = <&syscon MCUX_LPI2C1_CLK>;
+			status = "disabled";
+		};
+
+		lpi2c2: i2c@400d4000 {
+			compatible = "nxp,lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x400d4000 0x1000>;
+			interrupts = <77 0>;
+			clocks = <&syscon MCUX_LPI2C2_CLK>;
+			status = "disabled";
+		};
+
+		lpi2c3: i2c@400d5000 {
+			compatible = "nxp,lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x400d5000 0x1000>;
+			interrupts = <78 0>;
+			clocks = <&syscon MCUX_LPI2C3_CLK>;
+			status = "disabled";
+		};
+
 		wwdt0: watchdog@4000c000 {
 			compatible = "nxp,lpc-wwdt";
 			reg = <0x4000c000 0x1000>;
diff --git a/dts/arm/nxp/nxp_mcxa276.dtsi b/dts/arm/nxp/nxp_mcxa276.dtsi
@@ -8,6 +8,7 @@
 #include <arm/armv8-m.dtsi>
 #include <zephyr/dt-bindings/clock/mcux_lpc_syscon_clock.h>
 #include <zephyr/dt-bindings/gpio/gpio.h>
+#include <zephyr/dt-bindings/i2c/i2c.h>
 
 / {
 	cpus {
@@ -318,6 +319,50 @@
 			clocks = <&syscon MCUX_LPADC2_CLK>;
 		};
 
+		lpi2c0: i2c@4009a000 {
+			compatible = "nxp,lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x4009a000 0x1000>;
+			interrupts = <26 0>;
+			clocks = <&syscon MCUX_LPI2C0_CLK>;
+			status = "disabled";
+		};
+
+		lpi2c1: i2c@4009b000 {
+			compatible = "nxp,lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x4009b000 0x1000>;
+			interrupts = <27 0>;
+			clocks = <&syscon MCUX_LPI2C1_CLK>;
+			status = "disabled";
+		};
+
+		lpi2c2: i2c@400d4000 {
+			compatible = "nxp,lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x400d4000 0x1000>;
+			interrupts = <77 0>;
+			clocks = <&syscon MCUX_LPI2C2_CLK>;
+			status = "disabled";
+		};
+
+		lpi2c3: i2c@400d5000 {
+			compatible = "nxp,lpi2c";
+			clock-frequency = <I2C_BITRATE_STANDARD>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x400d5000 0x1000>;
+			interrupts = <78 0>;
+			clocks = <&syscon MCUX_LPI2C3_CLK>;
+			status = "disabled";
+		};
+
 		wwdt0: watchdog@4000c000 {
 			compatible = "nxp,lpc-wwdt";
 			reg = <0x4000c000 0x1000>;
diff --git a/tests/drivers/i2c/i2c_target_api/boards/frdm_mcxa166.overlay b/tests/drivers/i2c/i2c_target_api/boards/frdm_mcxa166.overlay
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2024 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* To test this sample, connect
+ * LPI2C1 SCL(J4-12)  -->  LPI2C3 SCL(J5-5)
+ * LPI2C1 SDA(J4-10)  -->  LPI2C3 SDA(J5-6)
+ */
+
+&lpi2c1 {
+	eeprom0: eeprom@54 {
+		compatible = "zephyr,i2c-target-eeprom";
+		reg = <0x54>;
+		size = <256>;
+	};
+};
+
+&lpi2c3 {
+	eeprom1: eeprom@56 {
+		compatible = "zephyr,i2c-target-eeprom";
+		reg = <0x56>;
+		size = <256>;
+	};
+};
diff --git a/tests/drivers/i2c/i2c_target_api/boards/frdm_mcxa276.overlay b/tests/drivers/i2c/i2c_target_api/boards/frdm_mcxa276.overlay
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2024 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* To test this sample, connect
+ * LPI2C1 SCL(J4-12)  -->  LPI2C3 SCL(J5-5)
+ * LPI2C1 SDA(J4-10)  -->  LPI2C3 SDA(J5-6)
+ */
+
+&lpi2c1 {
+	eeprom0: eeprom@54 {
+		compatible = "zephyr,i2c-target-eeprom";
+		reg = <0x54>;
+		size = <256>;
+	};
+};
+
+&lpi2c3 {
+	eeprom1: eeprom@56 {
+		compatible = "zephyr,i2c-target-eeprom";
+		reg = <0x56>;
+		size = <256>;
+	};
+};
diff --git a/tests/drivers/i2c/i2c_target_api/testcase.yaml b/tests/drivers/i2c/i2c_target_api/testcase.yaml
@@ -51,6 +51,8 @@ tests:
       - frdm_ke17z512
       - frdm_mcxn236
       - frdm_mcxa156
+      - frdm_mcxa166
+      - frdm_mcxa276
       - max32655evkit/max32655/m4
       - max32662evkit
       - max32666evkit/max32666/cpu0

-Original file line number
+Diff line change
   - uart
   - flash
   - adc
 +  - i2c
   - watchdog
   - counter
   - dma