diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dsi.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index a4ff1e64c030..20ed799714de 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -458,10 +458,12 @@ static void intel_dsi_clear_device_ready(struct intel_encoder *encoder) ULPS_STATE_ENTER); usleep_range(2000, 2500); - /* Wait till Clock lanes are in LP-00 state for MIPI Port A - * only. MIPI Port C has no similar bit for checking + /* + * On VLV/CHV, wait till Clock lanes are in LP-00 state for MIPI + * Port A only. MIPI Port C has no similar bit for checking. */ - if (intel_wait_for_register(dev_priv, + if ((IS_GEN9_LP(dev_priv) || port == PORT_A) && + intel_wait_for_register(dev_priv, port_ctrl, AFE_LATCHOUT, 0, 30)) DRM_ERROR("DSI LP not going Low\n"); |