Extend the timeout for the hardware to signal SEND_BUSY on the DP Aux Channel Controller register. This is needed to address FDO #109982 https://bugzilla.freedesktop.org/show_bug.cgi?id=109982 Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Cc: Imre Deak <imre.deak@xxxxxxxxx> Signed-off-by: Vanshidhar Konda <vanshidhar.r.konda@xxxxxxxxx> --- drivers/gpu/drm/i915/intel_dp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 47857f96c3b1..fd6de33c5664 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1053,6 +1053,8 @@ intel_dp_check_edp(struct intel_dp *intel_dp) } } +#define DP_AUX_CH_CTL_SIGNAL_TIMEOUT_MS 15 + static u32 intel_dp_aux_wait_done(struct intel_dp *intel_dp) { @@ -1063,7 +1065,7 @@ intel_dp_aux_wait_done(struct intel_dp *intel_dp) #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, - msecs_to_jiffies_timeout(10)); + msecs_to_jiffies_timeout(DP_AUX_CH_CTL_SIGNAL_TIMEOUT_MS)); /* just trace the final value */ trace_i915_reg_rw(false, ch_ctl, status, sizeof(status), true); -- 2.20.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
