drm/etnaviv: force flush on power register ops

Browse source

Add gpu_write_power_sync to verify that power register modifications
have reached the endpoint device in sequence specific sections that do
not validate device state.

These sequence specific areas have been detected experimentally with an
am57xx-evm through numerous boot and module load+unload cycles.

Signed-off-by: Randolph Sapp <rs@ti.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Link: https://patch.msgid.link/20251013170122.1145387-2-rs@ti.com

...

This commit is contained in:

Randolph Sapp 2025-10-13 12:01:23 -05:00 • committed by Lucas Stach

parent 9c99e09777

commit c182a2ae13

2 changed files with 11 additions and 5 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

10

drivers/gpu/drm/etnaviv/etnaviv_gpu.c

View file

6

drivers/gpu/drm/etnaviv/etnaviv_gpu.h

View file