diff options
| author | Jouni Högander <jouni.hogander@intel.com> | 2024-06-18 08:30:20 +0300 |
|---|---|---|
| committer | Jouni Högander <jouni.hogander@intel.com> | 2024-06-19 07:42:08 +0300 |
| commit | 22f3a60558da4509c0c3fa49b82a5d7e6f677cf5 (patch) | |
| tree | fa80d161094394d75a55b7d6dcfeabb29919f742 | |
| parent | 1eb28818c2418e341af2e8b5385243e03e841ae8 (diff) | |
drm/i915/alpm: Fix port clock usage in AUX Less wake time calculation
Port clock is link rate in 10 kbit/s units. Take this into account when
calculating AUX Less wake time.
Fixes: da6a9836ac09 ("drm/i915/psr: Calculate aux less wake time")
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240618053026.3268759-4-jouni.hogander@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_alpm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c b/drivers/gpu/drm/i915/display/intel_alpm.c index 90072f6e3a33..67848fc1e24d 100644 --- a/drivers/gpu/drm/i915/display/intel_alpm.c +++ b/drivers/gpu/drm/i915/display/intel_alpm.c @@ -125,7 +125,8 @@ static int _lnl_compute_aux_less_wake_time(int port_clock) int tsilence_max = 180; int t1 = 50 * 1000; int tps4 = 252; - int tml_phy_lock = 1000 * 1000 * tps4 * 10 / port_clock; + /* port_clock is link rate in 10kbit/s units */ + int tml_phy_lock = 1000 * 1000 * tps4 / port_clock; int num_ml_phy_lock = 7 + DIV_ROUND_UP(6500, tml_phy_lock) + 1; int t2 = num_ml_phy_lock * tml_phy_lock; int tcds = 1 * t2; |