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From: Jani Nikula <jani.nikula@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: jani.nikula@intel.com, manasi.d.navare@intel.com,
	ville.syrjala@linux.intel.com
Subject: [Intel-gfx] [PATCH 13/17] drm/i915/dp: select 128b/132b channel encoding for UHBR rates
Date: Wed, 18 Aug 2021 21:10:48 +0300	[thread overview]
Message-ID: <55a0b34ef28d035cad56b9e0c1886b5a12d18032.1629310010.git.jani.nikula@intel.com> (raw)
In-Reply-To: <cover.1629310010.git.jani.nikula@intel.com>

UHBR rates and 128b/132b channel encoding go hand in hand.

Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp_link_training.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
index 031c753fca56..01f0adc585d0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
@@ -495,7 +495,8 @@ intel_dp_prepare_link_train(struct intel_dp *intel_dp,
 				  &rate_select, 1);
 
 	link_config[0] = crtc_state->vrr.enable ? DP_MSA_TIMING_PAR_IGNORE_EN : 0;
-	link_config[1] = DP_SET_ANSI_8B10B;
+	link_config[1] = crtc_state->port_clock > 1000000 ?
+		DP_SET_ANSI_128B132B : DP_SET_ANSI_8B10B;
 	drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2);
 
 	intel_dp->DP |= DP_PORT_EN;
-- 
2.20.1


  parent reply	other threads:[~2021-08-18 18:12 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-18 18:10 [Intel-gfx] [PATCH 00/17] drm/i915/dp: dp 2.0 enabling prep work Jani Nikula
2021-08-18 18:10 ` [Intel-gfx] [PATCH 01/17] drm/dp: add DP 2.0 UHBR link rate and bw code conversions Jani Nikula
2021-08-18 18:10   ` Jani Nikula
2021-08-19 16:51   ` Ville Syrjälä
2021-08-19 16:51     ` [Intel-gfx] " Ville Syrjälä
2021-08-18 18:10 ` [Intel-gfx] [PATCH 02/17] drm/dp: use more of the extended receiver cap Jani Nikula
2021-08-18 18:10   ` Jani Nikula
2021-08-18 18:10 ` [PATCH 03/17] drm/dp: add LTTPR DP 2.0 DPCD addresses Jani Nikula
2021-08-18 18:10   ` [Intel-gfx] " Jani Nikula
2021-08-18 18:10 ` [Intel-gfx] [PATCH 04/17] drm/dp: add helper for extracting adjust 128b/132b TX FFE preset Jani Nikula
2021-08-18 18:10   ` Jani Nikula
2021-08-19 17:30   ` Ville Syrjälä
2021-08-19 17:30     ` [Intel-gfx] " Ville Syrjälä
2021-08-18 18:10 ` [Intel-gfx] [PATCH 05/17] drm/i915/dp: use actual link rate values in struct link_config_limits Jani Nikula
2021-08-19 17:34   ` Ville Syrjälä
2021-08-18 18:10 ` [Intel-gfx] [PATCH 06/17] drm/i915/dp: read sink UHBR rates Jani Nikula
2021-08-19 17:45   ` Ville Syrjälä
2021-08-18 18:10 ` [Intel-gfx] [PATCH 07/17] drm/i915/dg2: add TRANS_DP2_CTL register definition Jani Nikula
2021-08-18 18:10 ` [Intel-gfx] [PATCH 08/17] drm/i915/dg2: add DG2+ TRANS_DDI_FUNC_CTL DP 2.0 128b/132b mode Jani Nikula
2021-08-18 18:10 ` [Intel-gfx] [PATCH 09/17] drm/i915/dg2: add TRANS_DP2_VFREQHIGH and TRANS_DP2_VFREQLOW Jani Nikula
2021-08-18 18:10 ` [Intel-gfx] [PATCH 10/17] drm/i915/dg2: add DG2 UHBR source rates Jani Nikula
2021-08-18 18:10 ` [Intel-gfx] [PATCH 11/17] drm/i915/dp: add max data rate calculation for UHBR rates Jani Nikula
2021-08-18 18:10 ` [Intel-gfx] [PATCH 12/17] drm/i915/dp: use 128b/132b TPS2 for UHBR+ link rates Jani Nikula
2021-08-18 18:10 ` Jani Nikula [this message]
2021-08-19 17:49   ` [Intel-gfx] [PATCH 13/17] drm/i915/dp: select 128b/132b channel encoding for UHBR rates Ville Syrjälä
2021-08-20  6:36     ` Jani Nikula
2021-08-18 18:10 ` [Intel-gfx] [PATCH 14/17] drm/i915/dg2: configure TRANS_DP2_CTL for DP 2.0 Jani Nikula
2021-08-18 18:10 ` [Intel-gfx] [PATCH 15/17] drm/i915/dg2: use 128b/132b transcoder DDI mode Jani Nikula
2021-08-19 17:54   ` Ville Syrjälä
2021-08-18 18:10 ` [Intel-gfx] [PATCH 16/17] drm/i915/dg2: configure TRANS_DP2_VFREQ{HIGH, LOW} for 128b/132b Jani Nikula
2021-08-18 18:10 ` [Intel-gfx] [PATCH 17/17] drm/i915/dg2: update link training " Jani Nikula
2021-08-18 20:19 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915/dp: dp 2.0 enabling prep work Patchwork
2021-08-18 20:21 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2021-08-18 20:49 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork

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