Why reset EPDC
When TCE underrun occurs repeatedly, EPDC might lock up and the signal to panel continues. There is chance to cause panel damage.
The attached patch provides a way to reset EPDC to cut the signal out and recover EPDC from lockup. The patch is based on L4.1.15.
As for TCE underrun, QoS patch has obvious improvement. https://community.nxp.com/docs/DOC-343599
