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imx6ul BOOT mode problem

Question asked by 辉 刘 on Jun 14, 2020
Latest reply on Jun 15, 2020 by 辉 刘
imx6ul BOOT mode problem, IMX6UL I designed, the storage selection is EMMC, BOOT is set to LCD_DATA11, LCD_DATA6, LCD_DATA5, LCD_DATA1 is high level, after power on, no matter BOOT_MODE1, BOOT_MODE0 is (1,0) or (0 , 1), the boards are all HID-compliant devices, and the USB devices are not recognized after an abnormal interruption in the programming process.
Using the NXP official DDR test tool, read out SRC_SBMR1 (0X020d8004) = 0x00000862, SRC_SBMR2 (0X020d801c) = 0x02000041, but the default SRC_SBMR2 (0X020d801c) = 0x02000001 in the specification, compared with the IMX6UL development board that can be burned, its SRCXdB801 ) = 0x02000001 or SRC_SBMR2(0X020d801c) = 0x01000001.

At present, the level status measurement of the BOOT configuration item meets the programming requirements. The DDR stress test can pass, but the programming still cannot be performed normally. Please help, thank you.