diff --git a/ports/mimxrt/hal/qspi_nor_flash_config.c b/ports/mimxrt/hal/qspi_nor_flash_config.c
index 36ccc30fc1..0ed1b5032b 100644
--- a/ports/mimxrt/hal/qspi_nor_flash_config.c
+++ b/ports/mimxrt/hal/qspi_nor_flash_config.c
@@ -38,8 +38,8 @@ const flexspi_nor_config_t qspiflash_config = {
         .tag = FLEXSPI_CFG_BLK_TAG,
         .version = FLEXSPI_CFG_BLK_VERSION,
         .readSampleClkSrc = MICROPY_HW_FLASH_DQS,
-        .csHoldTime = 3u,
-        .csSetupTime = 3u,
+        .csHoldTime = 5u,   // safe time for all flash devices
+        .csSetupTime = 5u,
         .busyOffset = FLASH_BUSY_STATUS_OFFSET,         // Status bit 0 indicates busy.
         .busyBitPolarity = FLASH_BUSY_STATUS_POL,       // Busy when the bit is 1.
         .deviceModeCfgEnable = 1u,