How can I fix what to fail XIP boot?

[yongjin2712_cho]

I'm using custom board with RT1050 and MT25QL512 flash memory.

our flash memory(MT25QL512) supports both 3-byte addressing mode and 4-byte addressing mode.

And for accessing full area(64MB) of flash memory, I should use 4-byte addressing mode

Now, when I use flash memory with 3-byte addressing mode, our board work well to boot XIP with code as below.

const flexspi_nor_config_t qspiflash_config = {
    .memConfig =
    {
        .tag = FLEXSPI_CFG_BLK_TAG,
        .version = FLEXSPI_CFG_BLK_VERSION,
        .readSampleClkSrc = kFlexSPIReadSampleClk_LoopbackInternally,
        .csHoldTime = 3u,
        .csSetupTime = 3u,
  .deviceType = kFlexSpiDeviceType_SerialNOR,
        .sflashPadType = kSerialFlash_4Pads,
        .serialClkFreq = kFlexSpiSerialClk_100MHz,
        .sflashA1Size = 64u * 1024u * 1024u,
        .lookupTable =
            {
              FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0xEB, RADDR_SDR, FLEXSPI_4PAD, 0x18),
              FLEXSPI_LUT_SEQ(MODE8_SDR, FLEXSPI_4PAD, 0x10, DUMMY_SDR, FLEXSPI_4PAD, 0x08),
              FLEXSPI_LUT_SEQ(READ_SDR, FLEXSPI_4PAD, 0x04, STOP, FLEXSPI_1PAD, 0x00)
            },
    },
};

But when I changes our flash configuration into 4-byte addressing mode and modify lookupTable as below, our board does't work to boot XIP

        .lookupTable =
            {
              FLEXSPI_LUT_SEQ(CMD_SDR, FLEXSPI_1PAD, 0xEC, RADDR_SDR, FLEXSPI_4PAD, 0x20),
              FLEXSPI_LUT_SEQ(MODE8_SDR, FLEXSPI_4PAD, 0x10, DUMMY_SDR, FLEXSPI_4PAD, 0x08),
              FLEXSPI_LUT_SEQ(READ_SDR, FLEXSPI_4PAD, 0x04, STOP, FLEXSPI_1PAD, 0x00)
            },

How can I fix it?

[jay_heng]

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[AldoG]

Helllo,

Could you tell me if you set it to work with the 4-byte adressing mode, since it seems that the memory works with 3-byte adressing by default.

BR,
Aldo.

[yongjin2712_cho]

Yes, it works with 3-byte addressing by default.

So I set it to work with 4-byte addressing mode by setting non-volatile configuration register.

And it work well in modified qspi polling example supported by SDK. I only changed LUT table.

I applied some of table I used as mentioned above, but It doesn't work to boot XIP.