UHBR link rates use different tx equalization settings. Using this will require changes in the link training code too.
Bspec: 53920 Cc: Manasi Navare <[email protected]> Cc: Matt Roper <[email protected]> Signed-off-by: Jani Nikula <[email protected]> --- .../drm/i915/display/intel_ddi_buf_trans.c | 29 ++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) 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 ebb39624bfc9..796dd04eae01 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c +++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c @@ -1002,6 +1002,30 @@ static const struct intel_ddi_buf_trans dg2_snps_translations = { .hdmi_default_entry = ARRAY_SIZE(_dg2_snps_translations) - 1, }; +static const union intel_ddi_buf_trans_entry _dg2_snps_translations_uhbr[] = { + { .snps = { 62, 0, 0 } }, /* preset 0 */ + { .snps = { 56, 0, 6 } }, /* preset 1 */ + { .snps = { 51, 0, 11 } }, /* preset 2 */ + { .snps = { 48, 0, 14 } }, /* preset 3 */ + { .snps = { 43, 0, 19 } }, /* preset 4 */ + { .snps = { 59, 3, 0 } }, /* preset 5 */ + { .snps = { 53, 3, 6 } }, /* preset 6 */ + { .snps = { 49, 3, 10 } }, /* preset 7 */ + { .snps = { 45, 3, 14 } }, /* preset 8 */ + { .snps = { 42, 3, 17 } }, /* preset 9 */ + { .snps = { 56, 6, 0 } }, /* preset 10 */ + { .snps = { 50, 6, 6 } }, /* preset 11 */ + { .snps = { 47, 6, 9 } }, /* preset 12 */ + { .snps = { 42, 6, 14 } }, /* preset 13 */ + { .snps = { 46, 8, 8 } }, /* preset 14 */ + { .snps = { 56, 3, 3 } }, /* preset 15 */ +}; + +static const struct intel_ddi_buf_trans dg2_snps_translations_uhbr = { + .entries = _dg2_snps_translations_uhbr, + .num_entries = ARRAY_SIZE(_dg2_snps_translations_uhbr), +}; + bool is_hobl_buf_trans(const struct intel_ddi_buf_trans *table) { return table == &tgl_combo_phy_ddi_translations_edp_hbr2_hobl; @@ -1587,7 +1611,10 @@ dg2_get_snps_buf_trans(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, int *n_entries) { - return intel_get_buf_trans(&dg2_snps_translations, n_entries); + if (crtc_state->port_clock > 1000000) + return intel_get_buf_trans(&dg2_snps_translations_uhbr, n_entries); + else + return intel_get_buf_trans(&dg2_snps_translations, n_entries); } int intel_ddi_hdmi_num_entries(struct intel_encoder *encoder, -- 2.20.1
