In all the documentation made available for the RT1050, nowhere can a specification for the pin: DCDC_PSWITCH be found.
In order to calculate a delay filter for the pin to meet the criteria at least 1ms, a trigger level for the pin is needed.
It is in the DCDC_IN domain, but a specification for this domain seems unavailable.
Is it reasonable to assume it is 0.7*VCC?
From ref design: