# Holds the AMD GPU's fabric clock at its top level at boot and after every resume, for halogen-flash-server with
# the NPU (HALOGEN_NPU_MODELS): on Strix Halo the GPU and the NPU at once are safe only with that clock held.
# Install (as root), from this directory:
#   install -m 755 halogen-fabric-clock /usr/local/sbin/
#   install -m 644 halogen-fabric-clock.service /etc/systemd/system/
#   systemctl daemon-reload && systemctl enable --now halogen-fabric-clock.service
# Check: halogen-fabric-clock status. Undo: systemctl disable halogen-fabric-clock.service, then
#   halogen-fabric-clock release (or reboot). The unit runs once at boot and once after each resume (a resume can hand
#   the clock back to the driver); it holds nothing open, so it shows inactive between runs.
[Unit]
Description=Hold the AMD GPU fabric clock at its top level (GPU and NPU together)
After=systemd-modules-load.service suspend.target hibernate.target hybrid-sleep.target suspend-then-hibernate.target

[Service]
Type=oneshot
ExecStart=/usr/local/sbin/halogen-fabric-clock hold

[Install]
WantedBy=multi-user.target suspend.target hibernate.target hybrid-sleep.target suspend-then-hibernate.target