The file: Documentation/acpi/aml-debugger.txt reports an obsolete path for the acpidbg tool, so fix it. Signed-off-by: Flavio Suligoi <f.suligoi@asem.it> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
In some scenario, we need to build initrd with kernel in a single image. This can simplify system deployment process by downloading the whole system once, such as in IC verification. This patch adds support to override ACPI tables from built-in initrd. Signed-off-by: Shunyong Yang <shunyong.yang@hxt-semitech.com> [ rjw: Minor cleanups ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Instead of port and endpoint properties for representing ports and endpoints, use the keys of the hierarchical data extension references when referring to the port and endpoint nodes. Additionally, use "reg" properties as in Device Tree to specify the number of the port or the endpoint. The keys of the port nodes begin with "port" and the keys of the endpoint nodes begin with "endpoint", both followed by "@" character and the number of the port or the endpoint. These changes have the advantage that no ACPI specific properties need to be added to refer to non-device nodes. Additionally, using the name of the node instead of an integer property inside the node is easier to parse in code and easier for humans to understand. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Document that if a port has a single endpoint only, its value shall be zero. Similarly, if a device object only has a single port, its value shlla be zero. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Address a few issues in the ACPI _DSD properties graph documentation: - the extension for port nodes is a data extension (and not property extension), - clean up language in port hierarchical data extension definition, - add examples of port and endpoint packages, - port property value is the number of the "port" and not the number of the "port node", - remove word "individual" from endpoint data node description, it was redundant, - remove the extra "The" in the endpoint property description, - refer to hierarchical data extension keys and targets instead of first and second package list entries. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Hierarchical data extension 1.1 allows using references as the second entries of the hierearchical data extension packages. Update the references and the examples. The quotes are left in documentation for clarity. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
As part of the hierarchical data extension key naming, introduce numbering scheme for the nodes that may be referred to using hierarchical data extension references. This allows iterating over particular kind of nodes recognised by the node name whilst allowing numbering the nodes, bringing ACPI to feature parity with DT in this respect. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Add documentation on how to refer to hierarchical data nodes in a generic way. This brings ACPI to feature parity with Device Tree in terms of being able to refer to any node in the tree. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Changzhong Li <changzhong.li@intel.com> Reviewed-by: Rui Zhang <rui.zhang@intel.com> Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Add a file to describe the CPPC sysfs interface and steps to compute average delivered performance using the feedback counters. Signed-off-by: Prashanth Prakash <pprakash@codeaurora.org> [ rjw: Minor adjustments ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>