MIMXRT1050-EVK QSPI Flash

[brucebarnes]

We are planning to use QSPI flash instead of HyperFlash in our custom board.  On the MIMXRT1050-EVK board there is a QSPI flash that can be enabled by removing the default HyperFlash chip and adding some jumpers.

Where can I find the flash driver for the QSPI flash similar to the MIMXRT1050-EVK_S26KS512S.cfx flash driver for the HyperFlash?

The application note AN12107 describes how to enable boot from the HyperFlash and the SD Card.  Where is the similar information on how to enable boot from the QSPI flash?

[hnchenjian]

KEIL QSPI algorithm

const flexspi_nor_config_t Serialflash_config =
{
.memConfig =
{
.tag = FLEXSPI_CFG_BLK_TAG,
.version = FLEXSPI_CFG_BLK_VERSION,
.readSampleClkSrc = kFlexSPIReadSampleClk_LoopbackInternally,
.csHoldTime = 3u,
.csSetupTime = 3u,
.columnAddressWidth = 0u,
.deviceModeCfgEnable = 0,
.waitTimeCfgCommands = 0,
// Disable DDR mode, Wordaddassable, Safe configuration, Differential clock
.controllerMiscOption =
// (1u << kFlexSpiMiscOffset_DdrModeEnable) |
// (1u << kFlexSpiMiscOffset_WordAddressableEnable) |
// (1u << kFlexSpiMiscOffset_SafeConfigFreqEnable) |
// (1u << kFlexSpiMiscOffset_DiffClkEnable)|
0,
.deviceType = kFlexSpiDeviceType_SerialNOR,
.sflashPadType = kSerialFlash_4Pads,
.serialClkFreq = kFlexSpiSerialClk_60MHz,
.lutCustomSeqEnable = 0,
.sflashA1Size = 8u * 1024u * 1024u,
.dataValidTime = {16u, 16u},
.busyOffset = 1,
.busyBitPolarity = 0,
.lookupTable =
{
// Read LUTs
//[4 * NOR_CMD_LUT_SEQ_IDX_READ] = FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0x03, RADDR_SDR, FLEXSPI_1PAD, 0x18),
//[4 * NOR_CMD_LUT_SEQ_IDX_READ+1] = FLEXSPI_LUT_SEQ(READ_SDR, FLEXSPI_1PAD, 0x04,STOP, FLEXSPI_1PAD, 0x00),

[4 * NOR_CMD_LUT_SEQ_IDX_READ] = FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0x6b, RADDR_SDR, FLEXSPI_1PAD, 0x18),
[4 * NOR_CMD_LUT_SEQ_IDX_READ+1] = FLEXSPI_LUT_SEQ(DUMMY_SDR, FLEXSPI_4PAD, 0x08,READ_SDR, FLEXSPI_4PAD, 0x04),
},
},
.pageSize = 256u,
.sectorSize = 4u * 1024u,
.blockSize = 32u * 1024u,
.ipcmdSerialClkFreq = 0,
};

[brucebarnes]

Thanks that document has the information we were looking for.

[geovarghese · Accepted solution]

Came across this: https://www.nxp.com/docs/en/application-note/AN12108.pdf  Hope it helps