diff options
| author | Ville Syrjälä <[email protected]> | 2021-01-28 17:59:44 +0200 |
|---|---|---|
| committer | Jani Nikula <[email protected]> | 2021-02-02 09:10:59 +0200 |
| commit | eaf5bfe37db871031232d2bf2535b6ca92afbad8 (patch) | |
| tree | e1d10353cd07ac36d44d1029a24fde635507a75e | |
| parent | 1048ba83fb1c00cd24172e23e8263972f6b5d9ac (diff) | |
drm/i915: Skip vswing programming for TBT
In thunderbolt mode the PHY is owned by the thunderbolt controller.
We are not supposed to touch it. So skip the vswing programming
as well (we already skipped the other steps not applicable to TBT).
Touching this stuff could supposedly interfere with the PHY
programming done by the thunderbolt controller.
Cc: [email protected]
Signed-off-by: Ville Syrjälä <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Reviewed-by: Imre Deak <[email protected]>
(cherry picked from commit f8c6b615b921d8a1bcd74870f9105e62b0bceff3)
Signed-off-by: Jani Nikula <[email protected]>
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index bf17365857ca..e1e3ac12f979 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -2754,6 +2754,9 @@ static void icl_mg_phy_ddi_vswing_sequence(struct intel_encoder *encoder, int n_entries, ln; u32 val; + if (enc_to_dig_port(encoder)->tc_mode == TC_PORT_TBT_ALT) + return; + ddi_translations = icl_get_mg_buf_trans(encoder, crtc_state, &n_entries); if (level >= n_entries) { drm_dbg_kms(&dev_priv->drm, @@ -2890,6 +2893,9 @@ tgl_dkl_phy_ddi_vswing_sequence(struct intel_encoder *encoder, u32 val, dpcnt_mask, dpcnt_val; int n_entries, ln; + if (enc_to_dig_port(encoder)->tc_mode == TC_PORT_TBT_ALT) + return; + ddi_translations = tgl_get_dkl_buf_trans(encoder, crtc_state, &n_entries); if (level >= n_entries) |