got suggestion as below
"The DPU signature is used in DRM standard CRC function.
Userspace can control generation of CRCs in a given CRTC by writing to the file /sys/kernel/debug/dri/0/crtc-N/crc/control in debugfs, with N being the index of the CRTC. Accepted values are source names (which are driver-specific) and the "auto" keyword, which will let the driver select a default source of frame CRCs for this CRTC.
Once frame CRC generation is enabled, userspace can capture them by reading the /sys/kernel/debug/dri/0/crtc-N/crc/data file."
