drm/i915/tgl: Add new voltage swing table (04dfb1ac) · Commits · 戴 / test

drivers/gpu/drm/i915/display/intel_ddi.c

+19 −0

Original line number	Diff line number	Diff line
		@@ -706,6 +706,20 @@ static const struct cnl_ddi_buf_trans tgl_combo_phy_ddi_translations_dp_hbr2[] =
		{ 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
		};

		static const struct cnl_ddi_buf_trans tgl_uy_combo_phy_ddi_translations_dp_hbr2[] = {
		/* NT mV Trans mV db */
		{ 0xA, 0x35, 0x3F, 0x00, 0x00 }, /* 350 350 0.0 */
		{ 0xA, 0x4F, 0x36, 0x00, 0x09 }, /* 350 500 3.1 */
		{ 0xC, 0x60, 0x32, 0x00, 0x0D }, /* 350 700 6.0 */
		{ 0xC, 0x7F, 0x2D, 0x00, 0x12 }, /* 350 900 8.2 */
		{ 0xC, 0x47, 0x3F, 0x00, 0x00 }, /* 500 500 0.0 */
		{ 0xC, 0x6F, 0x36, 0x00, 0x09 }, /* 500 700 2.9 */
		{ 0x6, 0x7D, 0x32, 0x00, 0x0D }, /* 500 900 5.1 */
		{ 0x6, 0x60, 0x3C, 0x00, 0x03 }, /* 650 700 0.6 */
		{ 0x6, 0x7F, 0x34, 0x00, 0x0B }, /* 600 900 3.5 */
		{ 0x6, 0x7F, 0x3F, 0x00, 0x00 }, /* 900 900 0.0 */
		};

		/*
		* Cloned the HOBL entry to comply with the voltage and pre-emphasis entries
		* that DisplayPort specification requires
		@@ -1087,6 +1101,11 @@ tgl_get_combo_buf_trans(struct intel_encoder *encoder, int type, int rate,
		if (type == INTEL_OUTPUT_HDMI \|\| type == INTEL_OUTPUT_EDP) {
		return icl_get_combo_buf_trans(encoder, type, rate, n_entries);
		} else if (rate > 270000) {
		if (IS_TGL_U(dev_priv) \|\| IS_TGL_Y(dev_priv)) {
		*n_entries = ARRAY_SIZE(tgl_uy_combo_phy_ddi_translations_dp_hbr2);
		return tgl_uy_combo_phy_ddi_translations_dp_hbr2;
		}

		*n_entries = ARRAY_SIZE(tgl_combo_phy_ddi_translations_dp_hbr2);
		return tgl_combo_phy_ddi_translations_dp_hbr2;
		}