LMX2572LP: LMX2572LP SPI configuration issue

Hello!
We use SPI bus to control and configure devices in system,  all devices connect to SPI bus are daisy-chain topology. There are two LMX2592 chips ,one LMX2572LP chips and other 5 devices on the SPI bus. But after configuration, only the LMX2592 and LMX2572LP were not succssfully configured, the other 5-deviecs can be configured correctly.  The read back data of LMX-devices on MUXOUT pin are all 0xFFFF. In this situation , configuration failtue is inevitable, the curve of SCK and MOSI likes this . I think the time sequence of SCK and MOSI is perfect , the voltage ringing on the rising & falling edges are in threshold of input.

But after we only adjust the time sequece of SCK and MOSI , MOSI lag behinds SCK  20nS （20 x 1e-9 Seconds）. In this situation , the LMX-devices can be stablely and  correctly configured. We have configured LMX-devices in this way for about 10K times , the LMX-devices can be successfully configured each time.

Signal CSn of two curves is LOW, CSn is correct when testing .We We used the GND ring on the probe of scope,the test point of is the pins of LMX2572LP.So I think the time delay of testing can be ignored.The "daisy-chain" is our system like this.