firmware: ti_sci: Set IO Isolation only if the firmware is capable

Browse source

Prevent calling ti_sci_cmd_set_io_isolation() on firmware
that does not support the IO_ISOLATION capability. Add the
MSG_FLAG_CAPS_IO_ISOLATION capability flag and check it before
attempting to set IO isolation during suspend/resume operations.

Without this check, systems with older firmware may experience
undefined behavior or errors when entering/exiting suspend states.

Fixes: ec24643bdd ("firmware: ti_sci: Add system suspend and resume call")
Signed-off-by: Thomas Richard (TI.com) <thomas.richard@bootlin.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Link: https://patch.msgid.link/20251031-ti-sci-io-isolation-v2-1-60d826b65949@bootlin.com
Signed-off-by: Nishanth Menon <nm@ti.com>

...

This commit is contained in:

Thomas Richard (TI.com) 2025-10-31 13:44:56 +01:00 • committed by Nishanth Menon

parent 7a4cd87e76

commit 999e9bc953

2 changed files with 15 additions and 8 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

21

drivers/firmware/ti_sci.c

View file

2

drivers/firmware/ti_sci.h

View file