Thanks for your reply, I had looked at that design, we are using the evkmimxrt1064_mmmccard_freertos example for the sdk, which we have changed to use the second (8 bit ) port. As I said we have the 4 bit sdcard working on the first port.
Has anyone managed to get an eMMC working with the 1064?
I have attached the schematic page for the eMMc and SDRAM, I followed the suggestions from Octavo
https://octavosystems.com/app_notes/designing-for-flexibility-around-emmc/
hence I have wired to the NC pins. The schematic shows the supplies as 3V3, but I have tried them with the supply at 3V3 and VCCQ at 1.8V.
We changed sdmmc_config.h to use the second port as shown below
// DMCK
#define BOARD_SDMMC_MMC_HOST_BASEADDR USDHC2 //USDHC1
#define BOARD_SDMMC_MMC_HOST_IRQ USDHC2_IRQn //USDHC1_IRQn
#define BOARD_SDMMC_SDIO_HOST_BASEADDR USDHC1
#define BOARD_SDMMC_SDIO_HOST_IRQ USDHC1_IRQn
/* @brief card detect configuration */
#define BOARD_SDMMC_SD_CD_GPIO_BASE GPIO2
#define BOARD_SDMMC_SD_CD_GPIO_PIN 28u
#define BOARD_SDMMC_SD_CD_IRQ_PRIORITY 6U
#define BOARD_SDMMC_SD_CD_IRQ GPIO2_Combined_16_31_IRQn
#define BOARD_SDMMC_SD_CD_INTTERUPT_TYPE kGPIO_IntRisingOrFallingEdge
#define BOARD_SDMMC_SD_CD_INSERT_LEVEL (0U)
#define BOARD_SDMMC_SD_CD_PORT_IRQ_HANDLER GPIO2_Combined_16_31_IRQHandler
#define BOARD_SDMMC_SD_CD_TYPE kSD_DetectCardByGpioCD
#define BOARD_SDMMC_SD_CARD_DETECT_DEBOUNCE_DELAY_MS (100U)
/*! @brief SD power reset */
#define BOARD_SDMMC_SD_POWER_RESET_GPIO_BASE GPIO1
#define BOARD_SDMMC_SD_POWER_RESET_GPIO_PIN 19U
/*! @brief SD IO voltage */
#define BOARD_SDMMC_SD_IO_VOLTAGE_CONTROL_TYPE kSD_IOVoltageCtrlByHost
#define BOARD_SDMMC_SD_HOST_SUPPORT_SDR104_FREQ (200000000U)
// DMCK
#define BOARD_SDMMC_MMC_HOST_SUPPORT_HS200_FREQ (80000000U) //(180000000U)
//#define BOARD_SDMMC_MMC_HOST_SUPPORT_SDR104_FREQ (200000000U)
/* @brief mmc configuration */
// DMCK kMMC_VoltageWindows270to360
#define BOARD_SDMMC_MMC_VCC_SUPPLY kMMC_VoltageWindow170to195
#define BOARD_SDMMC_MMC_VCCQ_SUPPLY kMMC_VoltageWindow170to195
