[nrf fromtree] drivers: flash_mspi_nor: Take into account MSPI controller packet limit #3402
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carlescufi
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Oct 16, 2025
…" property Add a property with which MSPI controllers can indicate their limits on the maximum amount of data they can transfer in one packet. Use the property for the SSI controller, for which the clock stretching feature requires the use of the NDF field of the CTRLR1 register, which is 16-bit wide, hence the data length limit is 64 kB. Signed-off-by: Andrzej Głąbek <[email protected]> (cherry picked from commit b42a33d49f3a009f1bd2f8797b6f107276f01b34)
…ller packet limit Use information provided in the dts node for the MSPI controller regarding maximum amount of data that can be transferred in one packet and split the requested transfers if necessary. Signed-off-by: Andrzej Głąbek <[email protected]> (cherry picked from commit c3469a6)
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Add a property with which MSPI controllers can indicate their limits on the maximum amount of data they can transfer in one packet. Use the property for the SSI controller, for which the clock stretching feature requires the use of the NDF field of the CTRLR1 register, which is 16-bit wide, hence the data length limit is 64 kB.
Take the new property into account in the mspi_flash_nor driver and split requested transfers if necessary