imx6ull in linux4.1.15 : make cs drop to low level for all the time of 64 bytes

[bighero77]

my chip is imx6ull, the linux is linux 4.1.15
how to set the register to make cs keep drop durate several bytes?

now, my spi cs would drop every byte.

cs--_________-----  just send out 8 bit .
I need to send out 64 byte data in one cs drop:

cs--______________-- send out 64 byte .

what shall I do?

thanks.

[pengyong_zhang]

Hi @bighero77 

You can refer the spidev_test code to change the bits per word.

B.R

[bighero77]