ARM: dts: imx: Add support for DH electronics i.MX8M Plus DHCOM and PDK2

Add support for DH electronics i.MX8M Plus DHCOM SoM on PDK2 carrier board.
Currently supported are serial console, EQoS and FEC ethernets, eMMC, SD,
SPI NOR and USB 3.0 host.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/configs/imx8mp_dhcom_pdk2_defconfig b/configs/imx8mp_dhcom_pdk2_defconfig
new file mode 100644
index 0000000..2764152
--- /dev/null
+++ b/configs/imx8mp_dhcom_pdk2_defconfig
@@ -0,0 +1,244 @@
+CONFIG_ARM=y
+CONFIG_ARCH_IMX8M=y
+CONFIG_SYS_TEXT_BASE=0x40200000
+CONFIG_SYS_MALLOC_LEN=0x1000000
+CONFIG_SYS_MALLOC_F_LEN=0x18000
+CONFIG_SPL_GPIO=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_NR_DRAM_BANKS=2
+CONFIG_ENV_SIZE=0x10000
+CONFIG_ENV_OFFSET=0xFE0000
+CONFIG_ENV_SECT_SIZE=0x1000
+CONFIG_DM_GPIO=y
+CONFIG_DEFAULT_DEVICE_TREE="imx8mp-dhcom-pdk2"
+CONFIG_SPL_TEXT_BASE=0x920000
+CONFIG_TARGET_IMX8MP_DH_DHCOM_PDK2=y
+CONFIG_SPL_MMC=y
+CONFIG_SPL_SERIAL=y
+CONFIG_SPL_DRIVERS_MISC=y
+CONFIG_BOOTCOUNT_BOOTLIMIT=3
+CONFIG_SYS_BOOTCOUNT_ADDR=0x30370090
+CONFIG_SPL=y
+CONFIG_SYS_BOOTCOUNT_SINGLEWORD=y
+CONFIG_DEBUG_UART_BASE=0x30860000
+CONFIG_DEBUG_UART_CLOCK=24000000
+CONFIG_ENV_OFFSET_REDUND=0xFF0000
+CONFIG_IMX_BOOTAUX=y
+CONFIG_SPL_IMX_ROMAPI_LOADADDR=0x48000000
+CONFIG_SYS_LOAD_ADDR=0x50000000
+CONFIG_DEBUG_UART=y
+CONFIG_ENV_VARS_UBOOT_CONFIG=y
+CONFIG_FIT=y
+CONFIG_FIT_EXTERNAL_OFFSET=0x3000
+CONFIG_SPL_LOAD_FIT=y
+CONFIG_SPL_LOAD_FIT_ADDRESS=0x44000000
+# CONFIG_USE_SPL_FIT_GENERATOR is not set
+CONFIG_SUPPORT_RAW_INITRD=y
+CONFIG_OF_SYSTEM_SETUP=y
+CONFIG_USE_BOOTARGS=y
+CONFIG_USE_BOOTCOMMAND=y
+CONFIG_BOOTCOMMAND="run dh_update_env distro_bootcmd ; reset"
+CONFIG_USE_PREBOOT=y
+CONFIG_DEFAULT_FDT_FILE="imx8mp-dhcom-pdk2.dtb"
+CONFIG_CONSOLE_MUX=y
+CONFIG_SYS_CONSOLE_ENV_OVERWRITE=y
+CONFIG_ARCH_MISC_INIT=y
+CONFIG_BOARD_LATE_INIT=y
+CONFIG_SPL_BOOTROM_SUPPORT=y
+# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x300
+CONFIG_SPL_I2C=y
+CONFIG_SPL_POWER=y
+CONFIG_SPL_WATCHDOG=y
+CONFIG_HUSH_PARSER=y
+CONFIG_SYS_PROMPT="u-boot=> "
+# CONFIG_BOOTM_NETBSD is not set
+# CONFIG_BOOTM_PLAN9 is not set
+# CONFIG_BOOTM_RTEMS is not set
+# CONFIG_BOOTM_VXWORKS is not set
+CONFIG_CMD_ASKENV=y
+# CONFIG_CMD_EXPORTENV is not set
+CONFIG_CMD_ERASEENV=y
+CONFIG_CRC32_VERIFY=y
+CONFIG_CMD_EEPROM=y
+CONFIG_SYS_I2C_EEPROM_ADDR_LEN=2
+CONFIG_SYS_EEPROM_SIZE=16384
+CONFIG_SYS_EEPROM_PAGE_WRITE_BITS=6
+CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS=20
+CONFIG_CMD_MD5SUM=y
+CONFIG_MD5SUM_VERIFY=y
+CONFIG_CMD_MEMTEST=y
+CONFIG_CMD_SHA1SUM=y
+CONFIG_SHA1SUM_VERIFY=y
+CONFIG_CMD_CLK=y
+CONFIG_CMD_DFU=y
+CONFIG_CMD_FUSE=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_GPT_RENAME=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_LSBLK=y
+CONFIG_CMD_MBR=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_BKOPS_ENABLE=y
+CONFIG_CMD_MTD=y
+CONFIG_CMD_PART=y
+CONFIG_CMD_READ=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_USB_SDP=y
+CONFIG_CMD_USB_MASS_STORAGE=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_PXE=y
+CONFIG_CMD_BOOTCOUNT=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_TIME=y
+CONFIG_CMD_GETTIME=y
+CONFIG_CMD_SYSBOOT=y
+CONFIG_CMD_UUID=y
+CONFIG_CMD_PMIC=y
+CONFIG_CMD_REGULATOR=y
+CONFIG_CMD_HASH=y
+CONFIG_CMD_SMC=y
+CONFIG_HASH_VERIFY=y
+CONFIG_CMD_BTRFS=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_CMD_FS_UUID=y
+CONFIG_CMD_MTDPARTS=y
+CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES=y
+CONFIG_MTDIDS_DEFAULT="nor0=flash@0"
+CONFIG_MTDPARTS_DEFAULT="mtdparts=flash@0:-(sf)"
+CONFIG_MMC_SPEED_MODE_SET=y
+CONFIG_PARTITION_TYPE_GUID=y
+CONFIG_OF_CONTROL=y
+CONFIG_SPL_OF_CONTROL=y
+CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_NOWHERE=y
+CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_SECT_SIZE_AUTO=y
+CONFIG_ENV_SPI_MAX_HZ=80000000
+CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+CONFIG_VERSION_VARIABLE=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_NETCONSOLE=y
+CONFIG_IP_DEFRAG=y
+CONFIG_TFTP_TSIZE=y
+CONFIG_SPL_DM=y
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_BOOTCOUNT_LIMIT=y
+CONFIG_SYS_BOOTCOUNT_MAGIC=0xB0C40000
+CONFIG_SPL_CLK_COMPOSITE_CCF=y
+CONFIG_CLK_COMPOSITE_CCF=y
+CONFIG_SPL_CLK_IMX8MP=y
+CONFIG_CLK_IMX8MP=y
+CONFIG_SAVED_DRAM_TIMING_BASE=0x40000000
+CONFIG_DFU_TFTP=y
+CONFIG_DFU_TIMEOUT=y
+CONFIG_DFU_MMC=y
+CONFIG_DFU_MTD=y
+CONFIG_DFU_RAM=y
+CONFIG_USB_FUNCTION_FASTBOOT=y
+CONFIG_FASTBOOT_BUF_ADDR=0x42800000
+CONFIG_FASTBOOT_BUF_SIZE=0x20000000
+CONFIG_FASTBOOT_FLASH=y
+CONFIG_FASTBOOT_FLASH_MMC_DEV=0
+CONFIG_GPIO_HOG=y
+CONFIG_MXC_GPIO=y
+CONFIG_DM_I2C=y
+# CONFIG_INPUT is not set
+CONFIG_LED=y
+CONFIG_LED_BLINK=y
+CONFIG_LED_GPIO=y
+CONFIG_MISC=y
+CONFIG_I2C_EEPROM=y
+CONFIG_SYS_I2C_EEPROM_ADDR=0x50
+CONFIG_SUPPORT_EMMC_BOOT=y
+CONFIG_MMC_IO_VOLTAGE=y
+CONFIG_SPL_MMC_IO_VOLTAGE=y
+CONFIG_MMC_UHS_SUPPORT=y
+CONFIG_SPL_MMC_UHS_SUPPORT=y
+CONFIG_MMC_HS400_ES_SUPPORT=y
+CONFIG_MMC_HS400_SUPPORT=y
+CONFIG_FSL_USDHC=y
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
+CONFIG_DM_SPI_FLASH=y
+CONFIG_SF_DEFAULT_SPEED=50000000
+CONFIG_SPI_FLASH_SFDP_SUPPORT=y
+# CONFIG_SPI_FLASH_UNLOCK_ALL is not set
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_SPI_FLASH_MTD=y
+CONFIG_PHY_ATHEROS=y
+CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ90X1=y
+CONFIG_DM_ETH=y
+CONFIG_DM_MDIO=y
+CONFIG_DM_ETH_PHY=y
+CONFIG_DWC_ETH_QOS=y
+CONFIG_DWC_ETH_QOS_IMX=y
+CONFIG_FEC_MXC=y
+CONFIG_RGMII=y
+CONFIG_MII=y
+CONFIG_PHY_IMX8MQ_USB=y
+CONFIG_PINCTRL=y
+CONFIG_SPL_PINCTRL=y
+CONFIG_PINCTRL_IMX8M=y
+CONFIG_POWER_DOMAIN=y
+CONFIG_IMX8M_POWER_DOMAIN=y
+CONFIG_IMX8MP_HSIOMIX_BLKCTRL=y
+CONFIG_DM_PMIC=y
+CONFIG_DM_PMIC_PCA9450=y
+CONFIG_SPL_DM_PMIC_PCA9450=y
+CONFIG_DM_REGULATOR=y
+CONFIG_SPL_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_PCA9450=y
+CONFIG_SPL_DM_REGULATOR_PCA9450=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_REGULATOR_GPIO=y
+CONFIG_DM_RESET=y
+CONFIG_DM_RTC=y
+CONFIG_RTC_M41T62=y
+CONFIG_CONS_INDEX=2
+CONFIG_DM_SERIAL=y
+# CONFIG_SPL_DM_SERIAL is not set
+CONFIG_MXC_UART=y
+CONFIG_SPI=y
+CONFIG_DM_SPI=y
+CONFIG_NXP_FSPI=y
+CONFIG_MXC_SPI=y
+CONFIG_SYSRESET=y
+CONFIG_SPL_SYSRESET=y
+CONFIG_SYSRESET_PSCI=y
+CONFIG_SYSRESET_WATCHDOG=y
+CONFIG_DM_THERMAL=y
+CONFIG_IMX_TMU=y
+CONFIG_USB=y
+# CONFIG_SPL_DM_USB is not set
+CONFIG_USB_XHCI_HCD=y
+CONFIG_USB_XHCI_DWC3=y
+CONFIG_USB_XHCI_DWC3_OF_SIMPLE=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_DWC3=y
+# CONFIG_USB_DWC3_GADGET is not set
+CONFIG_USB_DWC3_GENERIC=y
+CONFIG_USB_STORAGE=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_MANUFACTURER="DH electronics"
+CONFIG_USB_GADGET_VENDOR_NUM=0x0525
+CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
+CONFIG_CI_UDC=y
+CONFIG_SDP_LOADADDR=0x0
+CONFIG_USB_FUNCTION_ACM=y
+CONFIG_IMX_WATCHDOG=y
+CONFIG_OF_LIBFDT_OVERLAY=y