Following the guidelines it takes 3 seconds to perform an FLR reset. Let's give it a bit more slack because this time can change depending on the platform and on the firmware
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10955 Signed-off-by: Andi Shyti <andi.sh...@linux.intel.com> --- drivers/gpu/drm/i915/intel_uncore.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 729409a4bada..2eba289d88ad 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -2614,11 +2614,18 @@ void intel_uncore_prune_engine_fw_domains(struct intel_uncore *uncore, static void driver_initiated_flr(struct intel_uncore *uncore) { struct drm_i915_private *i915 = uncore->i915; - const unsigned int flr_timeout_ms = 3000; /* specs recommend a 3s wait */ + unsigned int flr_timeout_ms; int ret; drm_dbg(&i915->drm, "Triggering Driver-FLR\n"); + /* + * The specification recommends a 3 seconds FLR reset timeout. To be + * cautious, we will extend this to 9 seconds, three times the specified + * timeout. + */ + flr_timeout_ms = 9000; + /* * Make sure any pending FLR requests have cleared by waiting for the * FLR trigger bit to go to zero. Also clear GU_DEBUG's DRIVERFLR_STATUS -- 2.43.0
