[PATCH] drm/i915/lnl: Modeset sequence change for DP on LNL

[Gustavo Sousa]

Drive-by comment: display stuff should be sent to
intel-gfx at lists.freedesktop.org.

Quoting Shekhar Chauhan (2024-02-28 13:11:44-03:00)
>Currently, the driver is only waiting for 1ms for
>idle patterns. But starting from LNL and beyond,
>the MST wants the driver to wait for 1640us before
>timing out (which we round up to 2ms).
>
>BSpec: 68849
>Signed-off-by: Shekhar Chauhan <shekhar.chauhan at intel.com>
>---
> drivers/gpu/drm/i915/display/intel_ddi.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
>index bea441590204..05ba3642d486 100644
>--- a/drivers/gpu/drm/i915/display/intel_ddi.c
>+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
>@@ -3680,7 +3680,7 @@ static void intel_ddi_set_idle_link_train(struct intel_dp *intel_dp,
> 
>         if (intel_de_wait_for_set(dev_priv,
>                                   dp_tp_status_reg(encoder, crtc_state),
>-                                  DP_TP_STATUS_IDLE_DONE, 1))
>+                                  DP_TP_STATUS_IDLE_DONE, 2))
>                 drm_err(&dev_priv->drm,
>                         "Timed out waiting for DP idle patterns\n");
> }
>-- 
>2.34.1
>