Advanced Configuration and Power Interface Specification

Device Configuration
Offset Field Name Definition
Byte 20
Vendor Data
Offset[15:8]
(high byte) Offset to the start of the Vendor-defined Data .(the
last byte of the ResourceSource + 1). This value must always
be valid to allow for length calculations. In the case where
there is no Vendor Data, this offset still must refer to the last
byte of the ResourceSource + 1.
The offset is relative to the start of this descriptor.
Byte 21
Vendor Data Length of Vendor-defined Data (low-byte).
Length [7:0]
Byte 22
Vendor Data
Length [15:8]
Length of Vendor-defined Data (high-byte).
Byte
PinTableOffset[15:0] +
2n (n is the index into
the pin table)
Byte
PinTableOffset[15:0] +
2n + 1 (n is the index
into the pin table)
Byte
ResourceSourceNameO
ffset[15:0]
Byte
VendorDataOffset[15:0]
Pin Number,
bits [7:0]
Pin Number,
bits [15:8]
Resource
Source (length
= L)
Vendor-defined
Data
GPIO controller-relative pin number (low byte). _PIN[7:0]. Pin
numbers are zero-based.
Pin number 0xFFFF = No Pin. OSPM will ignore this pin
number.
GPIO controller-relative pin number (high byte). _PIN[15:8].
Pin numbers are zero-based.
Pin number 0xFFFF = No Pin. OSPM will ignore this pin
number.
Name of the GPIO controller device to which this descriptor
applies. The name can be a fully-qualified name, a relative
name or a name segment that utilizes the namespace search
rules.
(Optional)
Data specific to the GPIO controller device supplied by a
vendor. This data is provided to the device driver for this GPIO
Controller. _VEN.
6.4.3.8.2 Serial Bus Connection Descriptors
Type 1, Large Item Name 0x0E
All Serial Bus Resource descriptors utilize the following format. For specific bus types, the typespecific
fields are used.
Table 6-219 Serial Bus Connection Descriptor
Offset Field Name Definition
Byte 0 Serial Bus Type Value = 0x8E (10001110B) – Type = 1, Large item name
= 0x0E
Byte 1 Length, bits[7:0] Variable length, minimum value = 0x09 + L(9 +
ResourceSource string length)”
Byte 2 Length, bits[15:8] Variable length, minimum value = 0x00
Byte 3 Revision ID Indicates the revision of the Serial Bus Connection
Descriptor. This value is 1.
Byte 4 Resource Source Index Reserved (must be 0)
Version 6.0 373