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drm/i915/display/adlp: Implement new step in the TC voltage swing prog sequence

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TC voltage swing programming sequence was updated with a new step.

BSpec: 54956
Cc: stable@vger.kernel.org
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Clint Taylor <clinton.a.taylor@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220113174826.50272-1-jose.souza@intel.com
(cherry picked from commit 5ff59dddac)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
This commit is contained in:
José Roberto de Souza
2022-01-13 09:48:26 -08:00
committed by Tvrtko Ursulin
parent ef3ac01564
commit e26602be48
2 changed files with 28 additions and 2 deletions
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22
drivers/gpu/drm/i915/display/intel_ddi.c
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@@ -1298,6 +1298,28 @@ static void tgl_dkl_phy_set_signal_levels(struct intel_encoder *encoder,
intel_de_rmw(dev_priv, DKL_TX_DPCNTL2(tc_port),
DKL_TX_DP20BITMODE, 0);
if (IS_ALDERLAKE_P(dev_priv)) {
u32 val;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
if (ln == 0) {
val = DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX1(0);
val |= DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX2(2);
} else {
val = DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX1(3);
val |= DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX2(3);
}
} else {
val = DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX1(0);
val |= DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX2(0);
}
intel_de_rmw(dev_priv, DKL_TX_DPCNTL2(tc_port),
DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX1_MASK |
DKL_TX_DPCNTL2_CFG_LOADGENSELECT_TX2_MASK,
val);
}
}
}