I searched the net and this is values I have found. It seem the value means something:
"AAPL,clock-id", // property needed for sleep support
Buffer (One)
{
0x0a
},
---
// We need to determine which OHCI controllers don't survive sleep. These fall into 2 categories:
//
// 1. CardBus cards
// 2. PCI Cards that lose power (right now because of a bug in the PCI Family, USB PCI cards do not prevent
// sleep, so even cards that don't support the PCI Power Mgmt stuff get their power removed.
//
// Additionally, the PowerBook 101 controller cannot survive across sleep (I doesn't support remote wakeup).
//
// So here, we look at all those cases and set the _unloadUIMAcrossSleep boolean to true. As it turns out,
// if a controller does not have the "AAPL,clock-id" property, then it means that it cannot survive sleep. We
// might need to refine this later once we figure how to deal with PCI cards that can go into PCI sleep mode.
// An exception is the B&W G3, that does not have this property but can sleep. Sigh...
// Now, look at PCI cards. Note that the onboard controller's provider is an IOPCIDevice so we cannot use that
// to distinguish between USB PCI cards and the on board controller. Instead, we use the existence of the
// "AAPL,clock-id" property in the provider. If it does not exist, then we are a OHCI controller on a USB PCI card.
//
if ( !_device->getProperty("AAPL,clock-id") && !((getPlatform()->getChipSetType() == kChipSetTypeGossamer) && getPlatform()->getMachineType() == kGossamerTypeYosemite) )
--------
// Exception for KeyLargo based systems, which have two power parents and get the kIOPMClockNormal from one of them (USBKeyLargo)
if ( _device->getProperty("AAPL,clock-id"))
{
// if I am on a KeyLargo system, I need to add the Key Largo clocks to two of my input requirements
_myPowerStates[kUSBPowerStateLowPower].inputPowerRequirement |= kIOPMClockNormal;
_myPowerStates[kUSBPowerStateOn].inputPowerRequirement |= kIOPMClockNormal;
}
-----------
"AAPL,clock-id",
Buffer (One)
{
One
},
-------------Asmedia USB 3.0 Chip(1042) Fully Working Fix 1.0
"AAPL,clock-id",
Buffer (One)
{
0x02
},