We use MX6QDL_PAD_EIM_D28 as our spi4 MOSI, but we can't ecognized SPI flash
And we use oscilloscope to measure EIM_D28,we found a strange phenomenon
As shown in below
At boot time, host will send deivce id(0X9F) to SPI,but before sending device id, EIM_D28 have a pulled LOW signals.
It will make the host sends the id becomes 0x1f.
We also have another SPI5,it will not have the phenomenon.
Both of them,we set pin control as below in dts file
Please help to investigate this issue.