Bootloaders often leave some system resources enabled such as clocks, regulators, interconnects etc. We want to keep these resources enabled until all their consumers are probed. These resources are often shared, so we must wait for all the consumers to come up, before deciding whether to turn them off or change the configuration. This patchset is trying to solve the above problem just for the on-chip interconnects. The problem is solved by allowing the interconnect providers to specify an initial bandwidth values, which are enforced during boot as floor values, while the requests from all consumers are being collected. Then the sync_state() callback is used to signal when all consumers have been probed, meaning that the floor bandwidth is not needed anymore and the framework is ready to re-aggregate and process all requests. v2: * Support initial values for both average and peak bandwidth (Mike) * Skip aggregating/setting for nodes that don't specify initial bw (Mike) * Drop patch 2/4: Add get_bw() callback (Mike) * Squash patches 3 and 4. v1: https://lore.kernel.org/lkml/20200709110705.30359-1-georgi.djakov@xxxxxxxxxx/ Georgi Djakov (2): interconnect: Add sync state support interconnect: qcom: Use icc_sync_state in sdm845 and osm-3l drivers drivers/interconnect/core.c | 61 +++++++++++++++++++++++++++ drivers/interconnect/qcom/osm-l3.c | 3 ++ drivers/interconnect/qcom/sdm845.c | 3 ++ include/linux/interconnect-provider.h | 5 +++ 4 files changed, 72 insertions(+)
