drm/i915/lt_phy: Update the Tx Swing for DP 1.4

Changes have been introduced in Bspec regarding the Tx Swing level,
Tx pre/post coefficients. Update the Tx Swing Level and the Tx
pre/post-cursor co-effecients to incorporate these changes

v2: Updated the commit message (Suraj)

BSpec: 74493
Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patch.msgid.link/20260415043952.3189598-1-arun.r.murthy@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
index 395dba8c9e4d32f50eb88a53bbeb3f5db0fcba01..980ab19868b3d2f9b1c7a2e09b4f4a0cccce1466 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c
@@ -1123,8 +1123,8 @@ static const union intel_ddi_buf_trans_entry _xe3plpd_lt_trans_dp14[] = {
        { .lt = { 1, 2, 0, 28, 7  } },
        { .lt = { 0, 3, 0, 35, 13 } },
        { .lt = { 1, 1, 0, 27, 0  } },
-       { .lt = { 1, 2, 0, 31, 4  } },
-       { .lt = { 0, 3, 0, 39, 9  } },
+       { .lt = { 1, 2, 0, 31, 5  } },
+       { .lt = { 0, 3, 0, 37, 11 } },
        { .lt = { 1, 2, 0, 35, 0  } },
        { .lt = { 0, 3, 0, 41, 7  } },
        { .lt = { 0, 3, 0, 48, 0  } },