firmware: ti_sci: add CPU latency constraint management

Browse source

During system-wide suspend, check if any of the CPUs have PM QoS
resume latency constraints set.  If so, set TI SCI constraint.

TI SCI has a single system-wide latency constraint, so use the max of
any of the CPU latencies as the system-wide value.

Note: DM firmware clears all constraints at resume time, so
constraints need to be checked/updated/sent at each system suspend.

Co-developed-by: Vibhore Vardhan <vibhore@ti.com>
Signed-off-by: Vibhore Vardhan <vibhore@ti.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20241007-tisci-syssuspendresume-v13-5-ed54cd659a49@baylibre.com
Signed-off-by: Nishanth Menon <nm@ti.com>

...

This commit is contained in:

Kevin Hilman 2024-10-07 08:08:58 +02:00 • committed by Nishanth Menon

parent 60357991f6

commit a7a15754c7

1 changed files with 23 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

24

drivers/firmware/ti_sci.c

View file