soc: nxp_imx: mimxrt1064_evk: Add I2C support

I2C1 is routed to J24 Arduino interface (D14/I2C_SDA, D15/I2C_SCL).

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>

boards/arm/mimxrt1064_evk/Kconfig.defconfig

@@ -28,6 +28,13 @@ config GPIO_MCUX_IGPIO_5
 
 endif # GPIO_MCUX_IGPIO
 
+if I2C_MCUX_LPI2C
+
+config I2C_1
+	default y
+
+endif # I2C_MCUX_LPI2C
+
 if UART_MCUX_LPUART
 
 config UART_MCUX_LPUART_1

boards/arm/mimxrt1064_evk/mimxrt1064_evk.dts

@@ -62,6 +62,8 @@
 	};
 };
 
+arduino_i2c: &i2c1 {};
+
 &lcdif1 {
 	status = "ok";
 	port {
@@ -71,6 +73,10 @@
 	};
 };
 
+&i2c1 {
+	status = "ok";
+};
+
 &uart1 {
 	status = "ok";
 	current-speed = <115200>;

boards/arm/mimxrt1064_evk/mimxrt1064_evk.yaml

@@ -18,3 +18,4 @@ supported:
   - display
   - hwinfo
   - netif:eth
+  - i2c

boards/arm/mimxrt1064_evk/pinmux.c

@@ -111,6 +111,26 @@ static int mimxrt1064_evk_init(struct device *dev)
 	GPIO_PinInit(GPIO2, 31, &config);
 #endif
 
+#ifdef CONFIG_I2C_1
+	/* LPI2C1 SCL, SDA */
+	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_00_LPI2C1_SCL, 1);
+	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_01_LPI2C1_SDA, 1);
+
+	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_00_LPI2C1_SCL,
+			    IOMUXC_SW_PAD_CTL_PAD_PUS(3) |
+			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
+			    IOMUXC_SW_PAD_CTL_PAD_ODE_MASK |
+			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
+			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
+
+	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_01_LPI2C1_SDA,
+			    IOMUXC_SW_PAD_CTL_PAD_PUS(3) |
+			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
+			    IOMUXC_SW_PAD_CTL_PAD_ODE_MASK |
+			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
+			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
+#endif
+
 #ifdef CONFIG_ETH_MCUX_0
 	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_09_GPIO1_IO09, 0U);
 	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_10_GPIO1_IO10, 0U);

soc/arm/nxp_imx/rt/Kconfig.soc

@@ -120,6 +120,7 @@ config SOC_MIMXRT1064
 	select HAS_MCUX_ELCDIF
 	select HAS_MCUX_ENET
 	select HAS_MCUX_IGPIO
+	select HAS_MCUX_LPI2C
 	select HAS_MCUX_LPUART
 	select HAS_MCUX_TRNG
 	select CPU_HAS_FPU_DOUBLE_PRECISION