Advanced Configuration and Power Interface Specification

ACPI Source Language (ASL)Reference
Shared is an optional argument and can be either Shared or Exclusive. If not specified, Exclusive is
assumed. The bit field name _SHR is automatically created to refer to this portion of the resource
descriptor.
VendorData is an optional argument that specifies an object to be decoded by the OS driver. It is a
RawDataBuffer. The bit field name _VEN is automatically created to refer to this portion of the
resource descriptor.
Description
The SPISerialBusV2 macro evaluates to a buffer that contains a SPI Serial Bus resource
descriptor(Version 2). The macro is designed to be used inside of a ResourceTemplate (see
Section 19.3.3).
19.6.121 Stall (Stall for a Short Time)
Syntax
Stall (MicroSeconds)
Arguments
The Stall term is used to implement short-term timing requirements. Execution is delayed for at least
the required number of microseconds.
Description
The implementation of Stall is OS-specific, but must not relinquish control of the processor.
Because of this, delays longer than 100 microseconds must use Sleep instead of Stall.
19.6.122 StartDependentFn (Start Dependent Function Resource
Descriptor Macro)
Syntax
StartDependentFn (CompatibilityPriority, PerformancePriority) {ResourceList}
Arguments
CompatibilityPriority indicates the relative compatibility of the configuration specified by
ResourceList relative to the PC/AT. 0 = Good, 1 = Acceptable, 2 = Sub-optimal.
PerformancePriority indicates the relative performance of the configuration specified by
ResourceList relative to the other configurations. 0 = Good, 1 = Acceptable, 2 = Sub-optimal.
ResourceList is a list of resources descriptors which must be selected together for this configuration.
Description
The StartDependentFn macro evaluates to a buffer which contains a start dependent function
resource descriptor, which describes a group of resources which must be selected together. Each
subsequent StartDependentFn or StartDependentFnNoPri resource descriptor introduces a new
choice of resources for configuring the device, with the last choice terminated with an
EndDependentFn resource descriptor. The format of the start dependent function resource descriptor
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