On LunarLake maximum for IO and Fast Wake time line counts are 68: 6 bits + 5 lines added by the HW. Take this into account in calculation and when writing the IO Wake lines. v2: maximum line count is 68 (6 bits + 5 lines added by HW) Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_psr.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index df0d14a5023f..f5d3eb776833 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -1421,8 +1421,9 @@ static bool _compute_alpm_params(struct intel_dp *intel_dp, fast_wake_time = precharge + preamble + phy_wake + tfw_exit_latency; - if (DISPLAY_VER(i915) >= 12) - /* TODO: Check how we can use ALPM_CTL fast wake extended field */ + if (DISPLAY_VER(i915) >= 20) + max_wake_lines = 68; + else if (DISPLAY_VER(i915) >= 12) max_wake_lines = 12; else max_wake_lines = 8; -- 2.34.1
