/*
 * Copyright (c) 2018, NXP
 * Copyright (c) 2020, Bernhard Kraemer
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <init.h>
#include <fsl_iomuxc.h>
#include <fsl_gpio.h>
#include <soc.h>
#include <logging/log.h>

LOG_MODULE_REGISTER(teensy40, LOG_LEVEL_INF);

#if DT_NODE_HAS_STATUS(DT_NODELABEL(enet), okay) && CONFIG_NET_L2_ETHERNET
static gpio_pin_config_t enet_gpio_config = {
	.direction = kGPIO_DigitalOutput,
	.outputLogic = 0,
	.interruptMode = kGPIO_NoIntmode
};
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(usdhc1), okay) && CONFIG_DISK_DRIVER_SDMMC

/*Drive Strength Field: R0(260 Ohm @ 3.3V, 150 Ohm@1.8V, 240 Ohm for DDR)
 *Speed Field: medium(100MHz)
 *Open Drain Enable Field: Open Drain Disabled
 *Pull / Keep Enable Field: Pull/Keeper Enabled
 *Pull / Keep Select Field: Pull
 *Pull Up / Down Config. Field: 47K Ohm Pull Up
 *Hyst. Enable Field: Hysteresis Enabled.
 */

static void teensy4_usdhc_pinmux(uint16_t nusdhc, bool init, uint32_t speed,
					uint32_t strength)
{
	uint32_t cmd_data = IOMUXC_SW_PAD_CTL_PAD_SPEED(speed) |
			 IOMUXC_SW_PAD_CTL_PAD_SRE_MASK |
			 IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			 IOMUXC_SW_PAD_CTL_PAD_PUE_MASK |
			 IOMUXC_SW_PAD_CTL_PAD_HYS_MASK |
			 IOMUXC_SW_PAD_CTL_PAD_PUS(1) |
			 IOMUXC_SW_PAD_CTL_PAD_DSE(strength);

	uint32_t clk = IOMUXC_SW_PAD_CTL_PAD_SPEED(speed) |
		    IOMUXC_SW_PAD_CTL_PAD_SRE_MASK |
		    IOMUXC_SW_PAD_CTL_PAD_HYS_MASK |
		    IOMUXC_SW_PAD_CTL_PAD_PUS(0) |
		    IOMUXC_SW_PAD_CTL_PAD_DSE(strength);

	if (nusdhc != 0) {
		LOG_ERR("Invalid USDHC index");
		return;
	}

	if (init) {
		IOMUXC_SetPinMux(IOMUXC_GPIO_EMC_35_GPIO3_IO21, 0U);
		IOMUXC_SetPinMux(IOMUXC_GPIO_EMC_41_USDHC1_VSELECT, 0U);
		IOMUXC_SetPinMux(IOMUXC_GPIO_SD_B0_00_USDHC1_CMD, 0U);
		IOMUXC_SetPinMux(IOMUXC_GPIO_SD_B0_01_USDHC1_CLK, 0U);
		IOMUXC_SetPinMux(IOMUXC_GPIO_SD_B0_02_USDHC1_DATA0, 0U);
		IOMUXC_SetPinMux(IOMUXC_GPIO_SD_B0_03_USDHC1_DATA1, 0U);
		IOMUXC_SetPinMux(IOMUXC_GPIO_SD_B0_04_USDHC1_DATA2, 0U);
		IOMUXC_SetPinMux(IOMUXC_GPIO_SD_B0_05_USDHC1_DATA3, 0U);

		/* SD0_CD_SW */
		IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_35_GPIO3_IO21, 0x017089u);

		/* SD0_VSELECT */
		IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_41_USDHC1_VSELECT,
				    0x0170A1u);
	}

	IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B0_00_USDHC1_CMD, cmd_data);
	IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B0_01_USDHC1_CLK, clk);
	IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B0_02_USDHC1_DATA0, cmd_data);
	IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B0_03_USDHC1_DATA1, cmd_data);
	IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B0_04_USDHC1_DATA2, cmd_data);
	IOMUXC_SetPinConfig(IOMUXC_GPIO_SD_B0_05_USDHC1_DATA3, cmd_data);
}
#endif

static int teensy4_init(const struct device *dev)
{
	ARG_UNUSED(dev);

	CLOCK_EnableClock(kCLOCK_Iomuxc);
	CLOCK_EnableClock(kCLOCK_IomuxcSnvs);

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpuart6), okay) && CONFIG_SERIAL
	/* LPUART6 TX/RX on Teensy-Pins 1/0 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_02_LPUART6_TX, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_03_LPUART6_RX, 0);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_02_LPUART6_TX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_03_LPUART6_RX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpuart4), okay) && CONFIG_SERIAL
	/* LPUART4 TX/RX on Teensy-Pins 8/7 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_00_LPUART4_TX, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_01_LPUART4_RX, 0);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_00_LPUART4_TX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_01_LPUART4_RX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpuart2), okay) && CONFIG_SERIAL
	/* LPUART2 TX/RX on Teensy-Pins 14/15 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_02_LPUART2_TX, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_03_LPUART2_RX, 0);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_02_LPUART2_TX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_03_LPUART2_RX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpuart3), okay) && CONFIG_SERIAL
	/* LPUART3 TX/RX on Teensy-Pins 17/16 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_06_LPUART3_TX, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_07_LPUART3_RX, 0);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_06_LPUART3_TX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_07_LPUART3_RX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpuart8), okay) && CONFIG_SERIAL
	/* LPUART8 TX/RX on Teensy-Pins 20/21 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_10_LPUART8_TX, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_11_LPUART8_RX, 0);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_10_LPUART8_TX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_11_LPUART8_RX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpuart1), okay) && CONFIG_SERIAL
	/* LPUART1 TX/RX on Teensy-Pins 20/21 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_12_LPUART1_TX, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_13_LPUART1_RX, 0);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_12_LPUART1_TX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_13_LPUART1_RX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpuart7), okay) && CONFIG_SERIAL
	/* LPUART7 TX/RX on Teensy-Pins 29/28 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_EMC_31_LPUART7_TX, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_EMC_32_LPUART7_RX, 0);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_31_LPUART7_TX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_32_LPUART7_RX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpuart5), okay) && CONFIG_SERIAL
	/* LPUART5 TX/RX on Teensy-Pins 35/34 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_12_LPUART5_TX, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_13_LPUART5_RX, 0);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_12_LPUART5_TX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_13_LPUART5_RX,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpi2c3), okay) && CONFIG_I2C
	/* LPI2C3 SCL, SDA on Teensy-Pins 16/17 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_07_LPI2C3_SCL, 1);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_06_LPI2C3_SDA, 1);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_07_LPI2C3_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_06_LPI2C3_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

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpi2c1), okay) && CONFIG_I2C
	/* LPI2C1 SCL, SDA on Teensy-Pins 19/18*/
	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

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpi2c4), okay) && CONFIG_I2C
	/* LPI2C4 SCL, SDA on Teensy-Pins 24/25*/
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_12_LPI2C4_SCL, 1);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_13_LPI2C4_SDA, 1);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_12_LPI2C4_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_B0_13_LPI2C4_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

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpspi3), okay) && CONFIG_SPI
	/* LPSPI3 MISO, MOSI, SCK, CS on Teensy-Pins 39/26/27/38 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_12_LPSPI3_PCS0, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_13_LPSPI3_SDI, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_14_LPSPI3_SDO, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_15_LPSPI3_SCK, 0);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_03_LPSPI3_PCS0,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_02_LPSPI3_SDI,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_01_LPSPI3_SDO,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_00_LPSPI3_SCK,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(lpspi4), okay) && CONFIG_SPI
	/* LPSPI3 MISO, MOSI, SCK, CS on Teensy-Pins 12/11/13/10 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_B0_00_LPSPI4_PCS0, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B0_01_LPSPI4_SDI, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B0_02_LPSPI4_SDO, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B0_03_LPSPI4_SCK, 0);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_B0_00_LPSPI4_PCS0,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_B0_01_LPSPI4_SDI,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_B0_02_LPSPI4_SDO,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));

	IOMUXC_SetPinConfig(IOMUXC_GPIO_B0_03_LPSPI4_SCK,
			    IOMUXC_SW_PAD_CTL_PAD_PKE_MASK |
			    IOMUXC_SW_PAD_CTL_PAD_SPEED(2) |
			    IOMUXC_SW_PAD_CTL_PAD_DSE(6));
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(enet), okay) && CONFIG_NET_L2_ETHERNET
	IOMUXC_SetPinMux(IOMUXC_GPIO_B0_14_GPIO2_IO14, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B0_15_GPIO2_IO15, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_04_ENET_RX_DATA00, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_05_ENET_RX_DATA01, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_06_ENET_RX_EN, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_07_ENET_TX_DATA00, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_08_ENET_TX_DATA01, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_09_ENET_TX_EN, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_10_ENET_REF_CLK, 1);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_11_ENET_RX_ER, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_14_ENET_MDC, 0);
	IOMUXC_SetPinMux(IOMUXC_GPIO_B1_15_ENET_MDIO, 0);

	/* Mode Straps configuration DP83825 */
	IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_04_ENET_RX_DATA00, 0x30E9); /* PhyAdd[0] = 0 */
	IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_05_ENET_RX_DATA01, 0xF0E9); /* RMII Master/Slave = 1*/
	IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_06_ENET_RX_EN, 0x30E9); /* PhyAdd[1] = 0 */
	IOMUXC_SetPinConfig(IOMUXC_GPIO_B1_11_ENET_RX_ER, 0x30E9); /* A-MDIX = 0 */

	IOMUXC_EnableMode(IOMUXC_GPR, kIOMUXC_GPR_ENET1TxClkOutputDir, true);

	/* Initialize ENET_INT GPIO */
	GPIO_PinInit(GPIO2, 14, &enet_gpio_config);
	GPIO_PinInit(GPIO2, 15, &enet_gpio_config);

	/* pull up the ENET_INT before RESET. */
	GPIO_WritePinOutput(GPIO2, 15, 1);
	GPIO_WritePinOutput(GPIO2, 14, 0);
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(flexcan2), okay) && CONFIG_CAN
	/* FLEXCAN2 TX, RX on Teensy-Pins 1/0 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_02_FLEXCAN2_TX, 1);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B0_03_FLEXCAN2_RX, 1);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_02_FLEXCAN2_TX, 0x10B0u);
	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B0_03_FLEXCAN2_RX, 0x10B0u);
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(flexcan1), okay) && CONFIG_CAN
	/* FLEXCAN1 TX, RX on Teensy-Pins 22/23 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_08_FLEXCAN1_TX, 1);
	IOMUXC_SetPinMux(IOMUXC_GPIO_AD_B1_09_FLEXCAN1_RX, 1);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_08_FLEXCAN1_TX, 0x10B0u);
	IOMUXC_SetPinConfig(IOMUXC_GPIO_AD_B1_09_FLEXCAN1_RX, 0x10B0u);
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(flexcan3), okay) && CONFIG_CAN
	/* FLEXCAN3 TX, RX on Teensy-Pins 31/30 */
	IOMUXC_SetPinMux(IOMUXC_GPIO_EMC_36_FLEXCAN3_TX, 1);
	IOMUXC_SetPinMux(IOMUXC_GPIO_EMC_37_FLEXCAN3_RX, 1);

	IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_36_FLEXCAN3_TX, 0x10B0u);
	IOMUXC_SetPinConfig(IOMUXC_GPIO_EMC_37_FLEXCAN3_RX, 0x10B0u);
#endif

#if DT_NODE_HAS_STATUS(DT_NODELABEL(usdhc1), okay) && CONFIG_DISK_DRIVER_SDMMC
	teensy4_usdhc_pinmux(0, true, 2, 1);
	imxrt_usdhc_pinmux_cb_register(teensy4_usdhc_pinmux);
#endif

	return 0;
}

#if DT_NODE_HAS_STATUS(DT_NODELABEL(enet), okay) && CONFIG_NET_L2_ETHERNET
static int teensy4_phy_reset(const struct device *dev)
{
	/* RESET PHY chip. */
	k_busy_wait(USEC_PER_MSEC * 50U); /* Power up timing T4 of PHY = 50ms */
	GPIO_WritePinOutput(GPIO2, 14, 1);

	return 0;
}
#endif

SYS_INIT(teensy4_init, PRE_KERNEL_1, 0);
#if DT_NODE_HAS_STATUS(DT_NODELABEL(enet), okay) && CONFIG_NET_L2_ETHERNET
SYS_INIT(teensy4_phy_reset, PRE_KERNEL_2, 0);
#endif