Hi Rafael, On 14/06/16 15:48, Sudeep Holla wrote:
ACPI 6.0 introduced LPI(Low Power Idle) states that provides an alternate method to describe processor idle states. It extends the specification to allow the expression of idle states like C-states selectable by the OSPM when a processor goes idle, but may affect more than one processor, and may affect other system components. LPI extensions leverages the processor container device(again introduced in ACPI 6.0) allowing to express which parts of the system are affected by a given LPI state. It defines the local power states for each node in a hierarchical processor topology. The OSPM can use _LPI object to select a local power state for each level of processor hierarchy in the system. They used to produce a composite power state request that is presented to the platform by the OSPM. Since multiple processors affect the idle state for any non-leaf hierarchy node, coordination of idle state requests between the processors is required. ACPI supports two different coordination schemes: Platform coordinated and OS initiated. This series aims at providing basic and initial support for platform coordinated LPI states.
Gentle ping, was hoping to target this series for v4.8 -- Regards, Sudeep -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
