[Intel-gfx] [PATCH] drm/i915/gt: Restrict the GT clock override to just Icelake

[Chris Wilson]

It appears that Elkhart Lake uses the same clock for CTX_TIMESTAMP as
CS_TIMESTAMP, leaving Icelake as the odd one out.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/3024
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c b/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
index f8c79efb1a87..09b290fe0867 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c
@@ -160,7 +160,7 @@ void intel_gt_init_clock_frequency(struct intel_gt *gt)
 		gt->clock_period_ns = intel_gt_clock_interval_to_ns(gt, 1);
 
 	/* Icelake appears to use another fixed frequency for CTX_TIMESTAMP */
-	if (IS_GEN(gt->i915, 11))
+	if (IS_ICELAKE(gt->i915))
 		gt->clock_period_ns = NSEC_PER_SEC / 13750000;
 
 	GT_TRACE(gt,
-- 
2.20.1