9 files changed, 133 insertions, 130 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h
index 7bdc146f7cb5..c8602bcfa393 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dccg.h
@@ -208,7 +208,9 @@
 #define DCCG314_REG_FIELD_LIST(type) \
 	type DSCCLK3_DTO_PHASE;\
 	type DSCCLK3_DTO_MODULO;\
-	type DSCCLK3_DTO_ENABLE;
+	type DSCCLK3_DTO_ENABLE;\
+	type DENTIST_DISPCLK_RDIVIDER;\
+	type DENTIST_DISPCLK_WDIVIDER;
 
 #define DCCG32_REG_FIELD_LIST(type) \
 	type DPSTREAMCLK0_EN;\
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.c
index 5bd698cd6d20..5eebe7f03ddc 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.c
@@ -30,22 +30,13 @@
 #include "dsc/dscc_types.h"
 #include "dsc/rc_calc.h"
 
-static void dsc_log_pps(struct display_stream_compressor *dsc, struct drm_dsc_config *pps);
-static bool dsc_prepare_config(const struct dsc_config *dsc_cfg, struct dsc_reg_values *dsc_reg_vals,
-			struct dsc_optc_config *dsc_optc_cfg);
-static void dsc_init_reg_values(struct dsc_reg_values *reg_vals);
-static void dsc_update_from_dsc_parameters(struct dsc_reg_values *reg_vals, const struct dsc_parameters *dsc_params);
 static void dsc_write_to_registers(struct display_stream_compressor *dsc, const struct dsc_reg_values *reg_vals);
-static enum dsc_pixel_format dsc_dc_pixel_encoding_to_dsc_pixel_format(enum dc_pixel_encoding dc_pix_enc, bool is_ycbcr422_simple);
-static enum dsc_bits_per_comp dsc_dc_color_depth_to_dsc_bits_per_comp(enum dc_color_depth);
 
 /* Object I/F functions */
-static void dsc2_get_enc_caps(struct dsc_enc_caps *dsc_enc_caps, int pixel_clock_100Hz);
 static void dsc2_read_state(struct display_stream_compressor *dsc, struct dcn_dsc_state *s);
 static bool dsc2_validate_stream(struct display_stream_compressor *dsc, const struct dsc_config *dsc_cfg);
 static void dsc2_set_config(struct display_stream_compressor *dsc, const struct dsc_config *dsc_cfg,
 		struct dsc_optc_config *dsc_optc_cfg);
-static bool dsc2_get_packed_pps(struct display_stream_compressor *dsc, const struct dsc_config *dsc_cfg, uint8_t *dsc_packed_pps);
 static void dsc2_enable(struct display_stream_compressor *dsc, int opp_pipe);
 static void dsc2_disable(struct display_stream_compressor *dsc);
 static void dsc2_disconnect(struct display_stream_compressor *dsc);
@@ -108,7 +99,7 @@ void dsc2_construct(struct dcn20_dsc *dsc,
 /* This returns the capabilities for a single DSC encoder engine. Number of slices and total throughput
  * can be doubled, tripled etc. by using additional DSC engines.
  */
-static void dsc2_get_enc_caps(struct dsc_enc_caps *dsc_enc_caps, int pixel_clock_100Hz)
+void dsc2_get_enc_caps(struct dsc_enc_caps *dsc_enc_caps, int pixel_clock_100Hz)
 {
 	dsc_enc_caps->dsc_version = 0x21; /* v1.2 - DP spec defined it in reverse order and we kept it */
 
@@ -184,7 +175,7 @@ static bool dsc2_validate_stream(struct display_stream_compressor *dsc, const st
 }
 
 
-static void dsc_config_log(struct display_stream_compressor *dsc, const struct dsc_config *config)
+void dsc_config_log(struct display_stream_compressor *dsc, const struct dsc_config *config)
 {
 	DC_LOG_DSC("\tnum_slices_h %d", config->dc_dsc_cfg.num_slices_h);
 	DC_LOG_DSC("\tnum_slices_v %d", config->dc_dsc_cfg.num_slices_v);
@@ -211,7 +202,7 @@ static void dsc2_set_config(struct display_stream_compressor *dsc, const struct
 }
 
 
-static bool dsc2_get_packed_pps(struct display_stream_compressor *dsc, const struct dsc_config *dsc_cfg, uint8_t *dsc_packed_pps)
+bool dsc2_get_packed_pps(struct display_stream_compressor *dsc, const struct dsc_config *dsc_cfg, uint8_t *dsc_packed_pps)
 {
 	bool is_config_ok;
 	struct dsc_reg_values dsc_reg_vals;
@@ -291,7 +282,7 @@ static void dsc2_disconnect(struct display_stream_compressor *dsc)
 }
 
 /* This module's internal functions */
-static void dsc_log_pps(struct display_stream_compressor *dsc, struct drm_dsc_config *pps)
+void dsc_log_pps(struct display_stream_compressor *dsc, struct drm_dsc_config *pps)
 {
 	int i;
 	int bits_per_pixel = pps->bits_per_pixel;
@@ -345,7 +336,7 @@ static void dsc_log_pps(struct display_stream_compressor *dsc, struct drm_dsc_co
 	}
 }
 
-static void dsc_override_rc_params(struct rc_params *rc, const struct dc_dsc_rc_params_override *override)
+void dsc_override_rc_params(struct rc_params *rc, const struct dc_dsc_rc_params_override *override)
 {
 	uint8_t i;
 
@@ -372,7 +363,7 @@ static void dsc_override_rc_params(struct rc_params *rc, const struct dc_dsc_rc_
 	rc->flatness_det_thresh = override->flatness_det_thresh;
 }
 
-static bool dsc_prepare_config(const struct dsc_config *dsc_cfg, struct dsc_reg_values *dsc_reg_vals,
+bool dsc_prepare_config(const struct dsc_config *dsc_cfg, struct dsc_reg_values *dsc_reg_vals,
 			struct dsc_optc_config *dsc_optc_cfg)
 {
 	struct dsc_parameters dsc_params;
@@ -463,7 +454,7 @@ static bool dsc_prepare_config(const struct dsc_config *dsc_cfg, struct dsc_reg_
 }
 
 
-static enum dsc_pixel_format dsc_dc_pixel_encoding_to_dsc_pixel_format(enum dc_pixel_encoding dc_pix_enc, bool is_ycbcr422_simple)
+enum dsc_pixel_format dsc_dc_pixel_encoding_to_dsc_pixel_format(enum dc_pixel_encoding dc_pix_enc, bool is_ycbcr422_simple)
 {
 	enum dsc_pixel_format dsc_pix_fmt = DSC_PIXFMT_UNKNOWN;
 
@@ -495,7 +486,7 @@ static enum dsc_pixel_format dsc_dc_pixel_encoding_to_dsc_pixel_format(enum dc_p
 }
 
 
-static enum dsc_bits_per_comp dsc_dc_color_depth_to_dsc_bits_per_comp(enum dc_color_depth dc_color_depth)
+enum dsc_bits_per_comp dsc_dc_color_depth_to_dsc_bits_per_comp(enum dc_color_depth dc_color_depth)
 {
 	enum dsc_bits_per_comp bpc = DSC_BPC_UNKNOWN;
 
@@ -518,7 +509,7 @@ static enum dsc_bits_per_comp dsc_dc_color_depth_to_dsc_bits_per_comp(enum dc_co
 }
 
 
-static void dsc_init_reg_values(struct dsc_reg_values *reg_vals)
+void dsc_init_reg_values(struct dsc_reg_values *reg_vals)
 {
 	int i;
 
@@ -574,7 +565,7 @@ static void dsc_init_reg_values(struct dsc_reg_values *reg_vals)
  * This is required because dscc_compute_dsc_parameters returns a modified PPS, which in turn
  * affects non-PPS register values.
  */
-static void dsc_update_from_dsc_parameters(struct dsc_reg_values *reg_vals, const struct dsc_parameters *dsc_params)
+void dsc_update_from_dsc_parameters(struct dsc_reg_values *reg_vals, const struct dsc_parameters *dsc_params)
 {
 	int i;
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.h b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.h
index 7ce64a3c1b02..ba869387c3c5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_dsc.h
@@ -549,6 +549,27 @@ struct dcn20_dsc {
 	int max_image_width;
 };
 
+void dsc_config_log(struct display_stream_compressor *dsc,
+		const struct dsc_config *config);
+
+void dsc_log_pps(struct display_stream_compressor *dsc,
+		struct drm_dsc_config *pps);
+
+void dsc_override_rc_params(struct rc_params *rc,
+		const struct dc_dsc_rc_params_override *override);
+
+bool dsc_prepare_config(const struct dsc_config *dsc_cfg,
+		struct dsc_reg_values *dsc_reg_vals,
+		struct dsc_optc_config *dsc_optc_cfg);
+
+enum dsc_pixel_format dsc_dc_pixel_encoding_to_dsc_pixel_format(enum dc_pixel_encoding dc_pix_enc,
+		bool is_ycbcr422_simple);
+
+enum dsc_bits_per_comp dsc_dc_color_depth_to_dsc_bits_per_comp(enum dc_color_depth dc_color_depth);
+
+void dsc_init_reg_values(struct dsc_reg_values *reg_vals);
+
+void dsc_update_from_dsc_parameters(struct dsc_reg_values *reg_vals, const struct dsc_parameters *dsc_params);
 
 void dsc2_construct(struct dcn20_dsc *dsc,
 		struct dc_context *ctx,
@@ -557,5 +578,12 @@ void dsc2_construct(struct dcn20_dsc *dsc,
 		const struct dcn20_dsc_shift *dsc_shift,
 		const struct dcn20_dsc_mask *dsc_mask);
 
+void dsc2_get_enc_caps(struct dsc_enc_caps *dsc_enc_caps,
+		int pixel_clock_100Hz);
+
+bool dsc2_get_packed_pps(struct display_stream_compressor *dsc,
+		const struct dsc_config *dsc_cfg,
+		uint8_t *dsc_packed_pps);
+
 #endif
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.c
index 24bd93219936..6eebcb22e317 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hubbub.c
@@ -623,6 +623,17 @@ void hubbub2_read_state(struct hubbub *hubbub, struct dcn_hubbub_state *hubbub_s
 		 REG_GET(DCN_VM_FAULT_STATUS, DCN_VM_ERROR_VMID, &hubbub_state->vm_error_vmid);
 		 REG_GET(DCN_VM_FAULT_STATUS, DCN_VM_ERROR_PIPE, &hubbub_state->vm_error_pipe);
 	}
+
+	if (REG(DCHUBBUB_TEST_DEBUG_INDEX) && REG(DCHUBBUB_TEST_DEBUG_DATA)) {
+		REG_WRITE(DCHUBBUB_TEST_DEBUG_INDEX, 0x6);
+		hubbub_state->test_debug_data = REG_READ(DCHUBBUB_TEST_DEBUG_DATA);
+	}
+
+	if (REG(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL))
+		hubbub_state->watermark_change_cntl = REG_READ(DCHUBBUB_ARB_WATERMARK_CHANGE_CNTL);
+
+	if (REG(DCHUBBUB_ARB_DRAM_STATE_CNTL))
+		hubbub_state->dram_state_cntl = REG_READ(DCHUBBUB_ARB_DRAM_STATE_CNTL);
 }
 
 static const struct hubbub_funcs hubbub2_funcs = {
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
index 422fbf79da64..5934b1d70e48 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c
@@ -313,6 +313,10 @@ void dcn20_init_blank(
 	}
 	opp = dc->res_pool->opps[opp_id_src0];
 
+	/* don't override the blank pattern if already enabled with the correct one. */
+	if (opp->funcs->dpg_is_blanked && opp->funcs->dpg_is_blanked(opp))
+		return;
+
 	if (num_opps == 2) {
 		otg_active_width = otg_active_width / 2;
 
@@ -1357,6 +1361,7 @@ static void dcn20_detect_pipe_changes(struct pipe_ctx *old_pipe, struct pipe_ctx
 		new_pipe->update_flags.bits.dppclk = 1;
 		new_pipe->update_flags.bits.hubp_interdependent = 1;
 		new_pipe->update_flags.bits.hubp_rq_dlg_ttu = 1;
+		new_pipe->update_flags.bits.unbounded_req = 1;
 		new_pipe->update_flags.bits.gamut_remap = 1;
 		new_pipe->update_flags.bits.scaler = 1;
 		new_pipe->update_flags.bits.viewport = 1;
@@ -1500,6 +1505,9 @@ static void dcn20_detect_pipe_changes(struct pipe_ctx *old_pipe, struct pipe_ctx
 				memcmp(&old_pipe->rq_regs, &new_pipe->rq_regs, sizeof(old_pipe->rq_regs)))
 			new_pipe->update_flags.bits.hubp_rq_dlg_ttu = 1;
 	}
+
+	if (old_pipe->unbounded_req != new_pipe->unbounded_req)
+		new_pipe->update_flags.bits.unbounded_req = 1;
 }
 
 static void dcn20_update_dchubp_dpp(
@@ -1533,10 +1541,11 @@ static void dcn20_update_dchubp_dpp(
 			&pipe_ctx->ttu_regs,
 			&pipe_ctx->rq_regs,
 			&pipe_ctx->pipe_dlg_param);
-
-		if (hubp->funcs->set_unbounded_requesting)
-			hubp->funcs->set_unbounded_requesting(hubp, pipe_ctx->unbounded_req);
 	}
+
+	if (pipe_ctx->update_flags.bits.unbounded_req && hubp->funcs->set_unbounded_requesting)
+		hubp->funcs->set_unbounded_requesting(hubp, pipe_ctx->unbounded_req);
+
 	if (pipe_ctx->update_flags.bits.hubp_interdependent)
 		hubp->funcs->hubp_setup_interdependent(
 			hubp,
@@ -1732,6 +1741,17 @@ static void dcn20_program_pipe(
 
 		if (hws->funcs.setup_vupdate_interrupt)
 			hws->funcs.setup_vupdate_interrupt(dc, pipe_ctx);
+
+		if (hws->funcs.calculate_dccg_k1_k2_values && dc->res_pool->dccg->funcs->set_pixel_rate_div) {
+			unsigned int k1_div, k2_div;
+
+			hws->funcs.calculate_dccg_k1_k2_values(pipe_ctx, &k1_div, &k2_div);
+
+			dc->res_pool->dccg->funcs->set_pixel_rate_div(
+				dc->res_pool->dccg,
+				pipe_ctx->stream_res.tg->inst,
+				k1_div, k2_div);
+		}
 	}
 
 	if (pipe_ctx->update_flags.bits.odm)
@@ -2126,7 +2146,7 @@ void dcn20_optimize_bandwidth(
 			dc->clk_mgr,
 			context,
 			true);
-	if (dc_extended_blank_supported(dc) && context->bw_ctx.bw.dcn.clk.zstate_support == DCN_ZSTATE_SUPPORT_ALLOW) {
+	if (context->bw_ctx.bw.dcn.clk.zstate_support == DCN_ZSTATE_SUPPORT_ALLOW) {
 		for (i = 0; i < dc->res_pool->pipe_count; ++i) {
 			struct pipe_ctx *pipe_ctx = &context->res_ctx.pipe_ctx[i];
 
@@ -2134,7 +2154,7 @@ void dcn20_optimize_bandwidth(
 				&& pipe_ctx->stream->adjust.v_total_min == pipe_ctx->stream->adjust.v_total_max
 				&& pipe_ctx->stream->adjust.v_total_max > pipe_ctx->stream->timing.v_total)
 					pipe_ctx->plane_res.hubp->funcs->program_extended_blank(pipe_ctx->plane_res.hubp,
-						pipe_ctx->dlg_regs.optimized_min_dst_y_next_start);
+						pipe_ctx->dlg_regs.min_dst_y_next_start);
 		}
 	}
 }
@@ -2471,36 +2491,31 @@ static void dcn20_reset_back_end_for_pipe(
 		return;
 	}
 
-	if (!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
-		/* DPMS may already disable or */
-		/* dpms_off status is incorrect due to fastboot
-		 * feature. When system resume from S4 with second
-		 * screen only, the dpms_off would be true but
-		 * VBIOS lit up eDP, so check link status too.
-		 */
-		if (!pipe_ctx->stream->dpms_off || link->link_status.link_active)
-			dc->link_srv->set_dpms_off(pipe_ctx);
-		else if (pipe_ctx->stream_res.audio)
-			dc->hwss.disable_audio_stream(pipe_ctx);
-
-		/* free acquired resources */
-		if (pipe_ctx->stream_res.audio) {
-			/*disable az_endpoint*/
-			pipe_ctx->stream_res.audio->funcs->az_disable(pipe_ctx->stream_res.audio);
-
-			/*free audio*/
-			if (dc->caps.dynamic_audio == true) {
-				/*we have to dynamic arbitrate the audio endpoints*/
-				/*we free the resource, need reset is_audio_acquired*/
-				update_audio_usage(&dc->current_state->res_ctx, dc->res_pool,
-						pipe_ctx->stream_res.audio, false);
-				pipe_ctx->stream_res.audio = NULL;
-			}
+	/* DPMS may already disable or */
+	/* dpms_off status is incorrect due to fastboot
+	 * feature. When system resume from S4 with second
+	 * screen only, the dpms_off would be true but
+	 * VBIOS lit up eDP, so check link status too.
+	 */
+	if (!pipe_ctx->stream->dpms_off || link->link_status.link_active)
+		dc->link_srv->set_dpms_off(pipe_ctx);
+	else if (pipe_ctx->stream_res.audio)
+		dc->hwss.disable_audio_stream(pipe_ctx);
+
+	/* free acquired resources */
+	if (pipe_ctx->stream_res.audio) {
+		/*disable az_endpoint*/
+		pipe_ctx->stream_res.audio->funcs->az_disable(pipe_ctx->stream_res.audio);
+
+		/*free audio*/
+		if (dc->caps.dynamic_audio == true) {
+			/*we have to dynamic arbitrate the audio endpoints*/
+			/*we free the resource, need reset is_audio_acquired*/
+			update_audio_usage(&dc->current_state->res_ctx, dc->res_pool,
+					pipe_ctx->stream_res.audio, false);
+			pipe_ctx->stream_res.audio = NULL;
 		}
 	}
-	else if (pipe_ctx->stream_res.dsc) {
-		dc->link_srv->set_dsc_enable(pipe_ctx, false);
-	}
 
 	/* by upper caller loop, parent pipe: pipe0, will be reset last.
 	 * back end share by all pipes and will be disable only when disable
@@ -2576,28 +2591,6 @@ void dcn20_reset_hw_ctx_wrap(
 	}
 }
 
-void dcn20_update_visual_confirm_color(struct dc *dc, struct pipe_ctx *pipe_ctx, struct tg_color *color, int mpcc_id)
-{
-	struct mpc *mpc = dc->res_pool->mpc;
-
-	// input to MPCC is always RGB, by default leave black_color at 0
-	if (dc->debug.visual_confirm == VISUAL_CONFIRM_HDR)
-		get_hdr_visual_confirm_color(pipe_ctx, color);
-	else if (dc->debug.visual_confirm == VISUAL_CONFIRM_SURFACE)
-		get_surface_visual_confirm_color(pipe_ctx, color);
-	else if (dc->debug.visual_confirm == VISUAL_CONFIRM_MPCTREE)
-		get_mpctree_visual_confirm_color(pipe_ctx, color);
-	else if (dc->debug.visual_confirm == VISUAL_CONFIRM_SWIZZLE)
-		get_surface_tile_visual_confirm_color(pipe_ctx, color);
-	else if (dc->debug.visual_confirm == VISUAL_CONFIRM_SUBVP)
-		get_subvp_visual_confirm_color(dc, pipe_ctx, color);
-
-	if (mpc->funcs->set_bg_color) {
-		memcpy(&pipe_ctx->plane_state->visual_confirm_color, color, sizeof(struct tg_color));
-		mpc->funcs->set_bg_color(mpc, color, mpcc_id);
-	}
-}
-
 void dcn20_update_mpcc(struct dc *dc, struct pipe_ctx *pipe_ctx)
 {
 	struct hubp *hubp = pipe_ctx->plane_res.hubp;
@@ -2653,7 +2646,7 @@ void dcn20_update_mpcc(struct dc *dc, struct pipe_ctx *pipe_ctx)
 	if (!pipe_ctx->plane_state->update_flags.bits.full_update &&
 		!pipe_ctx->update_flags.bits.mpcc) {
 		mpc->funcs->update_blending(mpc, &blnd_cfg, mpcc_id);
-		dc->hwss.update_visual_confirm_color(dc, pipe_ctx, &blnd_cfg.black_color, mpcc_id);
+		dc->hwss.update_visual_confirm_color(dc, pipe_ctx, mpcc_id);
 		return;
 	}
 
@@ -2675,7 +2668,7 @@ void dcn20_update_mpcc(struct dc *dc, struct pipe_ctx *pipe_ctx)
 			NULL,
 			hubp->inst,
 			mpcc_id);
-	dc->hwss.update_visual_confirm_color(dc, pipe_ctx, &blnd_cfg.black_color, mpcc_id);
+	dc->hwss.update_visual_confirm_color(dc, pipe_ctx, mpcc_id);
 
 	ASSERT(new_mpcc != NULL);
 	hubp->opp_id = pipe_ctx->stream_res.opp->inst;
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.h b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.h
index 33a36c02b2f8..01901b08644c 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.h
@@ -150,10 +150,5 @@ void dcn20_set_disp_pattern_generator(const struct dc *dc,
 		const struct tg_color *solid_color,
 		int width, int height, int offset);
 
-void dcn20_update_visual_confirm_color(struct dc *dc,
-		struct pipe_ctx *pipe_ctx,
-		struct tg_color *color,
-		int mpcc_id);
-
 #endif /* __DC_HWSS_DCN20_H__ */
 
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_init.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_init.c
index 7c5817c426fa..e4b44e691ce6 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_init.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_init.c
@@ -102,7 +102,7 @@ static const struct hw_sequencer_funcs dcn20_funcs = {
 	.disable_link_output = dce110_disable_link_output,
 	.set_disp_pattern_generator = dcn20_set_disp_pattern_generator,
 	.get_dcc_en_bits = dcn10_get_dcc_en_bits,
-	.update_visual_confirm_color = dcn20_update_visual_confirm_color
+	.update_visual_confirm_color = dcn10_update_visual_confirm_color,
 };
 
 static const struct hwseq_private_funcs dcn20_private_funcs = {
@@ -145,8 +145,4 @@ void dcn20_hw_sequencer_construct(struct dc *dc)
 	dc->hwss = dcn20_funcs;
 	dc->hwseq->funcs = dcn20_private_funcs;
 
-	if (IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment)) {
-		dc->hwss.init_hw = dcn20_fpga_init_hw;
-		dc->hwseq->funcs.init_pipes = NULL;
-	}
 }
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c
index a08c335b7383..58bdbd859bf9 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c
@@ -38,8 +38,12 @@
 	optc1->tg_shift->field_name, optc1->tg_mask->field_name
 
 /**
- * Enable CRTC
- * Enable CRTC - call ASIC Control Object to enable Timing generator.
+ * optc2_enable_crtc() - Enable CRTC - call ASIC Control Object to enable Timing generator.
+ *
+ * @optc: timing_generator instance.
+ *
+ * Return: If CRTC is enabled, return true.
+ *
  */
 bool optc2_enable_crtc(struct timing_generator *optc)
 {
@@ -73,15 +77,18 @@ bool optc2_enable_crtc(struct timing_generator *optc)
 }
 
 /**
- *For the below, I'm not sure how your GSL parameters are stored in your env,
- * so I will assume a gsl_params struct for now
+ * optc2_set_gsl() - Assign OTG to GSL groups,
+ *                   set one of the OTGs to be master & rest are slaves
+ *
+ * @optc: timing_generator instance.
+ * @params: pointer to gsl_params
  */
 void optc2_set_gsl(struct timing_generator *optc,
 		   const struct gsl_params *params)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
 
-/**
+/*
  * There are (MAX_OPTC+1)/2 gsl groups available for use.
  * In each group (assign an OTG to a group by setting OTG_GSLX_EN = 1,
  * set one of the OTGs to be the master (OTG_GSL_MASTER_EN = 1) and the rest are slaves.
@@ -391,10 +398,9 @@ void optc2_triplebuffer_lock(struct timing_generator *optc)
 	REG_SET(OTG_MASTER_UPDATE_LOCK, 0,
 		OTG_MASTER_UPDATE_LOCK, 1);
 
-	if (optc->ctx->dce_environment != DCE_ENV_FPGA_MAXIMUS)
-		REG_WAIT(OTG_MASTER_UPDATE_LOCK,
-				UPDATE_LOCK_STATUS, 1,
-				1, 10);
+	REG_WAIT(OTG_MASTER_UPDATE_LOCK,
+			UPDATE_LOCK_STATUS, 1,
+			1, 10);
 }
 
 void optc2_triplebuffer_unlock(struct timing_generator *optc)
@@ -456,6 +462,16 @@ void optc2_setup_manual_trigger(struct timing_generator *optc)
 {
 	struct optc *optc1 = DCN10TG_FROM_TG(optc);
 
+	/* Set the min/max selectors unconditionally so that
+	 * DMCUB fw may change OTG timings when necessary
+	 * TODO: Remove the w/a after fixing the issue in DMCUB firmware
+	 */
+	REG_UPDATE_4(OTG_V_TOTAL_CONTROL,
+				 OTG_V_TOTAL_MIN_SEL, 1,
+				 OTG_V_TOTAL_MAX_SEL, 1,
+				 OTG_FORCE_LOCK_ON_EVENT, 0,
+				 OTG_SET_V_TOTAL_MIN_MASK, (1 << 1)); /* TRIGA */
+
 	REG_SET_8(OTG_TRIGA_CNTL, 0,
 			OTG_TRIGA_SOURCE_SELECT, 21,
 			OTG_TRIGA_SOURCE_PIPE_SELECT, optc->inst,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index 1d8c5805ef20..4cc8de2627ce 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -722,22 +722,7 @@ static const struct dc_debug_options debug_defaults_drv = {
 		.scl_reset_length10 = true,
 		.sanity_checks = false,
 		.underflow_assert_delay_us = 0xFFFFFFFF,
-};
-
-static const struct dc_debug_options debug_defaults_diags = {
-		.disable_dmcu = false,
-		.force_abm_enable = false,
-		.timing_trace = true,
-		.clock_trace = true,
-		.disable_dpp_power_gate = true,
-		.disable_hubp_power_gate = true,
-		.disable_clock_gate = true,
-		.disable_pplib_clock_request = true,
-		.disable_pplib_wm_range = true,
-		.disable_stutter = true,
-		.scl_reset_length10 = true,
-		.underflow_assert_delay_us = 0xFFFFFFFF,
-		.enable_tri_buf = true,
+		.enable_legacy_fast_update = true,
 };
 
 void dcn20_dpp_destroy(struct dpp **dpp)
@@ -1066,13 +1051,6 @@ static const struct resource_create_funcs res_create_funcs = {
 	.create_hwseq = dcn20_hwseq_create,
 };
 
-static const struct resource_create_funcs res_create_maximus_funcs = {
-	.read_dce_straps = NULL,
-	.create_audio = NULL,
-	.create_stream_encoder = NULL,
-	.create_hwseq = dcn20_hwseq_create,
-};
-
 static void dcn20_pp_smu_destroy(struct pp_smu_funcs **pp_smu);
 
 void dcn20_clock_source_destroy(struct clock_source **clk_src)
@@ -2488,15 +2466,9 @@ static bool dcn20_resource_construct(
 
 	dc->caps.dp_hdmi21_pcon_support = true;
 
-	if (dc->ctx->dce_environment == DCE_ENV_PRODUCTION_DRV) {
+	if (dc->ctx->dce_environment == DCE_ENV_PRODUCTION_DRV)
 		dc->debug = debug_defaults_drv;
-	} else if (dc->ctx->dce_environment == DCE_ENV_FPGA_MAXIMUS) {
-		pool->base.pipe_count = 4;
-		pool->base.mpcc_count = pool->base.pipe_count;
-		dc->debug = debug_defaults_diags;
-	} else {
-		dc->debug = debug_defaults_diags;
-	}
+
 	//dcn2.0x
 	dc->work_arounds.dedcn20_305_wa = true;
 
@@ -2734,9 +2706,8 @@ static bool dcn20_resource_construct(
 	}
 
 	if (!resource_construct(num_virtual_links, dc, &pool->base,
-			(!IS_FPGA_MAXIMUS_DC(dc->ctx->dce_environment) ?
-			&res_create_funcs : &res_create_maximus_funcs)))
-			goto create_fail;
+			&res_create_funcs))
+		goto create_fail;
 
 	dcn20_hw_sequencer_construct(dc);