diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index b4c520348b3b..6c67232247ec 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -582,6 +582,34 @@ static const struct cnl_ddi_buf_trans ehl_combo_phy_ddi_translations_dp[] = {
 	{ 0x6, 0x7F, 0x3F, 0x00, 0x00 },	/* 900   900      0.0   */
 };
 
+static const struct cnl_ddi_buf_trans jsl_combo_phy_ddi_translations_edp_hbr[] = {
+						/* NT mV Trans mV db    */
+	{ 0x8, 0x7F, 0x3F, 0x00, 0x00 },	/* 200   200      0.0   */
+	{ 0x8, 0x7F, 0x38, 0x00, 0x07 },	/* 200   250      1.9   */
+	{ 0x1, 0x7F, 0x33, 0x00, 0x0C },	/* 200   300      3.5   */
+	{ 0xA, 0x35, 0x36, 0x00, 0x09 },	/* 200   350      4.9   */
+	{ 0x8, 0x7F, 0x3F, 0x00, 0x00 },	/* 250   250      0.0   */
+	{ 0x1, 0x7F, 0x38, 0x00, 0x07 },	/* 250   300      1.6   */
+	{ 0xA, 0x35, 0x35, 0x00, 0x0A },	/* 250   350      2.9   */
+	{ 0x1, 0x7F, 0x3F, 0x00, 0x00 },	/* 300   300      0.0   */
+	{ 0xA, 0x35, 0x38, 0x00, 0x07 },	/* 300   350      1.3   */
+	{ 0xA, 0x35, 0x3F, 0x00, 0x00 },	/* 350   350      0.0   */
+};
+
+static const struct cnl_ddi_buf_trans jsl_combo_phy_ddi_translations_edp_hbr2[] = {
+						/* NT mV Trans mV db    */
+	{ 0x8, 0x7F, 0x3F, 0x00, 0x00 },	/* 200   200      0.0   */
+	{ 0x8, 0x7F, 0x3F, 0x00, 0x00 },	/* 200   250      1.9   */
+	{ 0x1, 0x7F, 0x3D, 0x00, 0x02 },	/* 200   300      3.5   */
+	{ 0xA, 0x35, 0x38, 0x00, 0x07 },	/* 200   350      4.9   */
+	{ 0x8, 0x7F, 0x3F, 0x00, 0x00 },	/* 250   250      0.0   */
+	{ 0x1, 0x7F, 0x3F, 0x00, 0x00 },	/* 250   300      1.6   */
+	{ 0xA, 0x35, 0x3A, 0x00, 0x05 },	/* 250   350      2.9   */
+	{ 0x1, 0x7F, 0x3F, 0x00, 0x00 },	/* 300   300      0.0   */
+	{ 0xA, 0x35, 0x38, 0x00, 0x07 },	/* 300   350      1.3   */
+	{ 0xA, 0x35, 0x3F, 0x00, 0x00 },	/* 350   350      0.0   */
+};
+
 struct icl_mg_phy_ddi_buf_trans {
 	u32 cri_txdeemph_override_11_6;
 	u32 cri_txdeemph_override_5_0;
@@ -1167,6 +1195,57 @@ ehl_get_combo_buf_trans(struct intel_encoder *encoder,
 		return ehl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
 }
 
+static const struct cnl_ddi_buf_trans *
+jsl_get_combo_buf_trans_hdmi(struct intel_encoder *encoder,
+			     const struct intel_crtc_state *crtc_state,
+			     int *n_entries)
+{
+	*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_hdmi);
+	return icl_combo_phy_ddi_translations_hdmi;
+}
+
+static const struct cnl_ddi_buf_trans *
+jsl_get_combo_buf_trans_dp(struct intel_encoder *encoder,
+			   const struct intel_crtc_state *crtc_state,
+			   int *n_entries)
+{
+	*n_entries = ARRAY_SIZE(icl_combo_phy_ddi_translations_dp_hbr2);
+	return icl_combo_phy_ddi_translations_dp_hbr2;
+}
+
+static const struct cnl_ddi_buf_trans *
+jsl_get_combo_buf_trans_edp(struct intel_encoder *encoder,
+			    const struct intel_crtc_state *crtc_state,
+			    int *n_entries)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+
+	if (dev_priv->vbt.edp.low_vswing) {
+		if (crtc_state->port_clock > 270000) {
+			*n_entries = ARRAY_SIZE(jsl_combo_phy_ddi_translations_edp_hbr2);
+			return jsl_combo_phy_ddi_translations_edp_hbr2;
+		} else {
+			*n_entries = ARRAY_SIZE(jsl_combo_phy_ddi_translations_edp_hbr);
+			return jsl_combo_phy_ddi_translations_edp_hbr;
+		}
+	}
+
+	return jsl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
+static const struct cnl_ddi_buf_trans *
+jsl_get_combo_buf_trans(struct intel_encoder *encoder,
+			const struct intel_crtc_state *crtc_state,
+			int *n_entries)
+{
+	if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+		return jsl_get_combo_buf_trans_hdmi(encoder, crtc_state, n_entries);
+	else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP))
+		return jsl_get_combo_buf_trans_edp(encoder, crtc_state, n_entries);
+	else
+		return jsl_get_combo_buf_trans_dp(encoder, crtc_state, n_entries);
+}
+
 static const struct cnl_ddi_buf_trans *
 tgl_get_combo_buf_trans_hdmi(struct intel_encoder *encoder,
 			     const struct intel_crtc_state *crtc_state,
@@ -2368,8 +2447,10 @@ static u8 intel_ddi_dp_voltage_max(struct intel_dp *intel_dp,
 		else
 			tgl_get_dkl_buf_trans(encoder, crtc_state, &n_entries);
 	} else if (INTEL_GEN(dev_priv) == 11) {
-		if (IS_ELKHARTLAKE(dev_priv))
+		if (IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE))
 			ehl_get_combo_buf_trans(encoder, crtc_state, &n_entries);
+		else if (IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE))
+			jsl_get_combo_buf_trans(encoder, crtc_state, &n_entries);
 		else if (intel_phy_is_combo(dev_priv, phy))
 			icl_get_combo_buf_trans(encoder, crtc_state, &n_entries);
 		else
@@ -2549,8 +2630,10 @@ static void icl_ddi_combo_vswing_program(struct intel_encoder *encoder,
 
 	if (INTEL_GEN(dev_priv) >= 12)
 		ddi_translations = tgl_get_combo_buf_trans(encoder, crtc_state, &n_entries);
-	else if (IS_ELKHARTLAKE(dev_priv))
+	else if (IS_PLATFORM(dev_priv, INTEL_ELKHARTLAKE))
 		ddi_translations = ehl_get_combo_buf_trans(encoder, crtc_state, &n_entries);
+	else if (IS_PLATFORM(dev_priv, INTEL_JASPERLAKE))
+		ddi_translations = jsl_get_combo_buf_trans(encoder, crtc_state, &n_entries);
 	else
 		ddi_translations = icl_get_combo_buf_trans(encoder, crtc_state, &n_entries);
 	if (!ddi_translations)
@@ -3140,7 +3223,7 @@ static void intel_ddi_clk_select(struct intel_encoder *encoder,
 		if (!intel_phy_is_combo(dev_priv, phy))
 			intel_de_write(dev_priv, DDI_CLK_SEL(port),
 				       icl_pll_to_ddi_clk_sel(encoder, crtc_state));
-		else if (IS_ELKHARTLAKE(dev_priv) && port >= PORT_C)
+		else if (IS_EHL_JSL(dev_priv) && port >= PORT_C)
 			/*
 			 * MG does not exist but the programming is required
 			 * to ungate DDIC and DDID
@@ -3189,7 +3272,7 @@ static void intel_ddi_clk_disable(struct intel_encoder *encoder)
 
 	if (INTEL_GEN(dev_priv) >= 11) {
 		if (!intel_phy_is_combo(dev_priv, phy) ||
-		    (IS_ELKHARTLAKE(dev_priv) && port >= PORT_C))
+		    (IS_EHL_JSL(dev_priv) && port >= PORT_C))
 			intel_de_write(dev_priv, DDI_CLK_SEL(port),
 				       DDI_CLK_SEL_NONE);
 	} else if (IS_CANNONLAKE(dev_priv)) {
@@ -4334,7 +4417,7 @@ void intel_ddi_compute_min_voltage_level(struct drm_i915_private *dev_priv,
 {
 	if (INTEL_GEN(dev_priv) >= 12 && crtc_state->port_clock > 594000)
 		crtc_state->min_voltage_level = 2;
-	else if (IS_ELKHARTLAKE(dev_priv) && crtc_state->port_clock > 594000)
+	else if (IS_EHL_JSL(dev_priv) && crtc_state->port_clock > 594000)
 		crtc_state->min_voltage_level = 3;
 	else if (INTEL_GEN(dev_priv) >= 11 && crtc_state->port_clock > 594000)
 		crtc_state->min_voltage_level = 1;
@@ -5186,7 +5269,7 @@ void intel_ddi_init(struct drm_i915_private *dev_priv, enum port port)
 		encoder->hpd_pin = rkl_hpd_pin(dev_priv, port);
 	else if (INTEL_GEN(dev_priv) >= 12)
 		encoder->hpd_pin = tgl_hpd_pin(dev_priv, port);
-	else if (IS_ELKHARTLAKE(dev_priv))
+	else if (IS_EHL_JSL(dev_priv))
 		encoder->hpd_pin = ehl_hpd_pin(dev_priv, port);
 	else if (IS_GEN(dev_priv, 11))
 		encoder->hpd_pin = icl_hpd_pin(dev_priv, port);
