diff --git a/msm/msm_drv.h b/msm/msm_drv.h
index 356fb6404c..64976cf982 100644
--- a/msm/msm_drv.h
+++ b/msm/msm_drv.h
@@ -369,6 +369,9 @@ struct msm_roi_caps {
  * @dsc_4hsmerge_en:         Using DSC 4HS merge topology
  * @dsc_4hsmerge_padding     4HS merge DSC pair padding value in bytes
  * @dsc_4hsmerge_alignment   4HS merge DSC alignment value in bytes
+ * @half_panel_pu            True For Dual dsc encoders if partial update is
+ *                           enabled and only one encoder needs to be used,
+ *                           False in all other cases
  */
 struct msm_display_dsc_info {
 	struct drm_dsc_config config;
@@ -390,6 +393,7 @@ struct msm_display_dsc_info {
 	bool dsc_4hsmerge_en;
 	u32 dsc_4hsmerge_padding;
 	u32 dsc_4hsmerge_alignment;
+	bool half_panel_pu;
 };
 
 
diff --git a/msm/sde/sde_crtc.c b/msm/sde/sde_crtc.c
index 932c931d46..c2a7cd44a5 100644
--- a/msm/sde/sde_crtc.c
+++ b/msm/sde/sde_crtc.c
@@ -896,9 +896,12 @@ static u32 _sde_crtc_get_displays_affected(struct drm_crtc *crtc,
 			disp_bitmask = BIT(1);		/* right only */
 		else
 			disp_bitmask = BIT(0) | BIT(1); /* left and right */
+	} else if (sde_crtc->mixers_swapped) {
+		disp_bitmask = BIT(0);
 	} else {
 		for (i = 0; i < sde_crtc->num_mixers; i++) {
-			if (!sde_kms_rect_is_null(&crtc_state->lm_roi[i]))
+			if (!sde_kms_rect_is_null(
+					&crtc_state->lm_roi[i]))
 				disp_bitmask |= BIT(i);
 		}
 	}
@@ -1113,7 +1116,7 @@ static void _sde_crtc_program_lm_output_roi(struct drm_crtc *crtc)
 	struct sde_crtc_state *crtc_state;
 	const struct sde_rect *lm_roi;
 	struct sde_hw_mixer *hw_lm;
-	bool right_mixer;
+	bool right_mixer = false;
 	int lm_idx;
 
 	if (!crtc)
@@ -1127,15 +1130,13 @@ static void _sde_crtc_program_lm_output_roi(struct drm_crtc *crtc)
 
 		lm_roi = &crtc_state->lm_roi[lm_idx];
 		hw_lm = sde_crtc->mixers[lm_idx].hw_lm;
-		right_mixer = lm_idx % MAX_MIXERS_PER_LAYOUT;
+		if (!sde_crtc->mixers_swapped)
+			right_mixer = lm_idx % MAX_MIXERS_PER_LAYOUT;
 
 		SDE_EVT32(DRMID(crtc_state->base.crtc), lm_idx,
 				lm_roi->x, lm_roi->y, lm_roi->w, lm_roi->h,
 				right_mixer);
 
-		if (sde_kms_rect_is_null(lm_roi))
-			continue;
-
 		hw_lm->cfg.out_width = lm_roi->w;
 		hw_lm->cfg.out_height = lm_roi->h;
 		hw_lm->cfg.right_mixer = right_mixer;
@@ -1664,13 +1665,8 @@ static void _sde_crtc_blend_setup(struct drm_crtc *crtc,
 		ctl = mixer[i].hw_ctl;
 		lm = mixer[i].hw_lm;
 
-		if (sde_kms_rect_is_null(lm_roi)) {
-			SDE_DEBUG(
-				"%s: lm%d leave ctl%d mask 0 since null roi\n",
-					sde_crtc->name, lm->idx - LM_0,
-					ctl->idx - CTL_0);
-			continue;
-		}
+		if (sde_kms_rect_is_null(lm_roi))
+			sde_crtc->mixers[i].mixer_op_mode = 0;
 
 		lm->ops.setup_alpha_out(lm, mixer[i].mixer_op_mode);
 
@@ -1684,8 +1680,17 @@ static void _sde_crtc_blend_setup(struct drm_crtc *crtc,
 			ctl->idx - CTL_0,
 			cfg.pending_flush_mask);
 
-		ctl->ops.setup_blendstage(ctl, mixer[i].hw_lm->idx,
-				&sde_crtc->stage_cfg[lm_layout]);
+		if (sde_kms_rect_is_null(lm_roi)) {
+			SDE_DEBUG(
+				"%s: lm%d leave ctl%d mask 0 since null roi\n",
+					sde_crtc->name, lm->idx - LM_0,
+					ctl->idx - CTL_0);
+			ctl->ops.setup_blendstage(ctl, mixer[i].hw_lm->idx,
+					NULL);
+		} else {
+			ctl->ops.setup_blendstage(ctl, mixer[i].hw_lm->idx,
+					&sde_crtc->stage_cfg[lm_layout]);
+		}
 	}
 
 	_sde_crtc_program_lm_output_roi(crtc);
diff --git a/msm/sde/sde_encoder_dce.c b/msm/sde/sde_encoder_dce.c
index ab93c486f3..e8f76b4187 100644
--- a/msm/sde/sde_encoder_dce.c
+++ b/msm/sde/sde_encoder_dce.c
@@ -326,11 +326,11 @@ static int _dce_dsc_setup_single(struct sde_encoder_virt *sde_enc,
 	hw_ctl = sde_enc->cur_master->hw_ctl;
 
 	/*
-	 * in 3d_merge and half_panel partial update dsc should be
+	 * in 3d_merge or half_panel partial update, dsc should be
 	 * bound to the pp which is driving the update, else in
 	 * 3d_merge dsc should be bound to left side of the pipe
 	 */
-	if (merge_3d && half_panel_partial_update)
+	if (merge_3d || half_panel_partial_update)
 		hw_pp = (active) ? sde_enc->hw_pp[0] : sde_enc->hw_pp[1];
 	else
 		hw_pp = sde_enc->hw_pp[index];
@@ -346,9 +346,9 @@ static int _dce_dsc_setup_single(struct sde_encoder_virt *sde_enc,
 		return -EINVAL;
 	}
 
-	SDE_EVT32(DRMID(&sde_enc->base), roi->w, roi->h,
-			dsc_common_mode, index, active, merge_3d,
-			disable_merge_3d, dsc_4hsmerge);
+	SDE_EVT32(DRMID(&sde_enc->base), roi->w, roi->h, dsc_common_mode,
+			index, active, merge_3d, disable_merge_3d,
+			dsc_4hsmerge);
 
 	_dce_dsc_pipe_cfg(hw_dsc, hw_pp, dsc, dsc_common_mode, ich_res,
 			hw_dsc_pp, mode_3d, disable_merge_3d, active,
@@ -362,11 +362,12 @@ static int _dce_dsc_setup_single(struct sde_encoder_virt *sde_enc,
 
 	if (hw_ctl->ops.update_bitmask)
 		hw_ctl->ops.update_bitmask(hw_ctl, SDE_HW_FLUSH_DSC,
-				hw_dsc->idx, active);
+				hw_dsc->idx, true);
 
-	SDE_DEBUG_DCE(sde_enc, "update_intf_cfg hw_ctl[%d], dsc:%d, %s",
+	SDE_DEBUG_DCE(sde_enc, "update_intf_cfg hw_ctl[%d], dsc:%d, %s %d\n",
 			hw_ctl->idx, cfg.dsc[0],
-			active ? "enabled" : "disabled");
+			active ? "enabled" : "disabled",
+			half_panel_partial_update);
 
 	if (mode_3d) {
 		memset(&cfg, 0, sizeof(cfg));
@@ -428,6 +429,7 @@ static int _dce_dsc_setup_helper(struct sde_encoder_virt *sde_enc,
 
 	half_panel_partial_update = _dce_check_half_panel_update(num_lm,
 			affected_displays);
+	dsc->half_panel_pu = half_panel_partial_update;
 	dsc_merge = ((num_dsc > num_intf) && !half_panel_partial_update) ?
 			true : false;
 	disable_merge_3d = (merge_3d && half_panel_partial_update) ?
diff --git a/msm/sde/sde_hw_dsc_1_2.c b/msm/sde/sde_hw_dsc_1_2.c
index 38a2824fc6..29c41ba42e 100644
--- a/msm/sde/sde_hw_dsc_1_2.c
+++ b/msm/sde/sde_hw_dsc_1_2.c
@@ -115,8 +115,11 @@ static void sde_hw_dsc_disable(struct sde_hw_dsc *hw_dsc)
 	dsc_c = &hw_dsc->hw;
 	SDE_REG_WRITE(dsc_c, DSC_CFG + idx, 0);
 
-	/* common register */
-	SDE_REG_WRITE(dsc_c, DSC_CMN_MAIN_CNF, 0);
+	if (_dsc_subblk_offset(hw_dsc, SDE_DSC_ENC, &idx))
+		return;
+
+	SDE_REG_WRITE(dsc_c, ENC_DF_CTRL + idx, 0);
+	SDE_REG_WRITE(dsc_c, DSC_MAIN_CONF + idx, 0);
 }
 
 static void sde_hw_dsc_config(struct sde_hw_dsc *hw_dsc,
@@ -140,14 +143,13 @@ static void sde_hw_dsc_config(struct sde_hw_dsc *hw_dsc,
 	if (mode & DSC_MODE_SPLIT_PANEL)
 		data |= BIT(0);
 
-	if (mode & DSC_MODE_MULTIPLEX) {
-		if (dsc->dsc_4hsmerge_en)
-			slice_count_per_enc = dsc->config.slice_count >> 2;
-		else
-			slice_count_per_enc = dsc->config.slice_count >> 1;
-
+	if (mode & DSC_MODE_MULTIPLEX)
 		data |= BIT(1);
-	}
+
+	if (dsc->dsc_4hsmerge_en)
+		slice_count_per_enc = dsc->config.slice_count >> 2;
+	else if ((mode & DSC_MODE_MULTIPLEX) || (dsc->half_panel_pu))
+		slice_count_per_enc = dsc->config.slice_count >> 1;
 
 	data |= (slice_count_per_enc & 0x3) << 7;
 	SDE_REG_WRITE(dsc_c, DSC_CMN_MAIN_CNF, data);