This change is to power on panel before DPHY enters the lane state LP-11. Some panel needs this to meet its specifcation.
Cc: Ville Syrjala <[email protected]> Cc: Jani Nikula <[email protected]> Cc: Vandita Kulkarni <[email protected]> Cc: Lee Shawn C <[email protected]> Cc: Cooper Chiou <[email protected]> Signed-off-by: William Tseng <[email protected]> --- drivers/gpu/drm/i915/display/icl_dsi.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c index 5781e9fac8b4..b766057c95f5 100644 --- a/drivers/gpu/drm/i915/display/icl_dsi.c +++ b/drivers/gpu/drm/i915/display/icl_dsi.c @@ -1194,8 +1194,6 @@ static void gen11_dsi_powerup_panel(struct intel_encoder *encoder) } /* panel power on related mipi dsi vbt sequences */ - intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON); - intel_dsi_msleep(intel_dsi, intel_dsi->panel_on_delay); intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DEASSERT_RESET); intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_INIT_OTP); intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_DISPLAY_ON); @@ -1221,13 +1219,19 @@ static void gen11_dsi_pre_enable(struct intel_atomic_state *state, const struct intel_crtc_state *pipe_config, const struct drm_connector_state *conn_state) { + struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); + /* step3b */ gen11_dsi_map_pll(encoder, pipe_config); + /* for mipi dsi vbt sequence to powerup panel */ + intel_dsi_vbt_exec_sequence(intel_dsi, MIPI_SEQ_POWER_ON); + intel_dsi_msleep(intel_dsi, intel_dsi->panel_on_delay); + /* step4: enable DSI port and DPHY */ gen11_dsi_enable_port_and_phy(encoder, pipe_config); - /* step5: program and powerup panel */ + /* step5: program panel */ gen11_dsi_powerup_panel(encoder); intel_dsc_dsi_pps_write(encoder, pipe_config); -- 2.17.1
