PCI_L1SS_CAP_P_PWR_ON_SCALE
val &= ~(PCI_L1SS_CAP_P_PWR_ON_SCALE | PCI_L1SS_CAP_P_PWR_ON_VALUE);
FIELD_MODIFY(PCI_L1SS_CAP_P_PWR_ON_SCALE, &val, scale);
scale1 = FIELD_GET(PCI_L1SS_CAP_P_PWR_ON_SCALE, parent_l1ss_cap);
scale2 = FIELD_GET(PCI_L1SS_CAP_P_PWR_ON_SCALE, child_l1ss_cap);