| Message ID | 20240229025752.651864-1-shekhar.chauhan@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/i915/lnl: Modeset sequence change for DP on LNL | expand |
On Thu, 29 Feb 2024, Shekhar Chauhan <shekhar.chauhan@intel.com> wrote: > 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@intel.com> Replied in the other thread: https://lore.kernel.org/r/878r338nhs.fsf@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"); > }
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"); }
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@intel.com> --- drivers/gpu/drm/i915/display/intel_ddi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)