How to change LEAD value on QSPI Master?

[kv193]

Hello.
I success learn and transfer to my board example from github "SPI_DMA_1_KIT_TC397_TFT".
Now I need change (adjust) timing parameters as LEAD, LPRE and SCLK polarity.
If I write in user space init code

qspi->BACON.U = value; 

I got TRAP error in debugger and not change value in register.

I try use function IfxQspi_SpiMaster_writeBasicConfiguration(&Qspi.spiMaster, value);

with the same result.
What is my mistake? Is there example for this case?

[kv193 · Accepted solution]

I solved the task himself. Through spiMasterChannelConfig.base.mode.csLeadDelay.