Proposition 57 permits CDCR to award custody credits beyond those authorized by statute, but does not permit awarding credits to advance indeterminate sentence parole eligibility date in a manner conflicting with a statute.  Regulations conflicting with statutes are invalid. For example, CDCR regulations may not conflict with PC 190(e), which states that conduct credits may not decrease the minimum term for a PC 187 sentence.

The full opinion is available on the court’s website here: https://www4.courts.ca.gov/opinions/documents/C100274.PDF