1 files changed, 39 insertions, 41 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
index 35c55e54eac0..9ef3f7b91a1d 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c
@@ -59,14 +59,16 @@ int rn_get_active_display_cnt_wa(
 		struct dc_state *context)
 {
 	int i, display_count;
-	bool hdmi_present = false;
+	bool tmds_present = false;
 
 	display_count = 0;
 	for (i = 0; i < context->stream_count; i++) {
 		const struct dc_stream_state *stream = context->streams[i];
 
-		if (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A)
-			hdmi_present = true;
+		if (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A ||
+				stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK ||
+				stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK)
+			tmds_present = true;
 	}
 
 	for (i = 0; i < dc->link_count; i++) {
@@ -85,7 +87,7 @@ int rn_get_active_display_cnt_wa(
 	}
 
 	/* WA for hang on HDMI after display off back back on*/
-	if (display_count == 0 && hdmi_present)
+	if (display_count == 0 && tmds_present)
 		display_count = 1;
 
 	return display_count;
@@ -149,6 +151,12 @@ void rn_update_clocks(struct clk_mgr *clk_mgr_base,
 		rn_vbios_smu_set_min_deep_sleep_dcfclk(clk_mgr, clk_mgr_base->clks.dcfclk_deep_sleep_khz);
 	}
 
+	// workaround: Limit dppclk to 100Mhz to avoid lower eDP panel switch to plus 4K monitor underflow.
+	if (!IS_DIAG_DC(dc->ctx->dce_environment)) {
+		if (new_clocks->dppclk_khz < 100000)
+			new_clocks->dppclk_khz = 100000;
+	}
+
 	if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr->base.clks.dppclk_khz)) {
 		if (clk_mgr->base.clks.dppclk_khz > new_clocks->dppclk_khz)
 			dpp_clock_lowered = true;
@@ -164,16 +172,16 @@ void rn_update_clocks(struct clk_mgr *clk_mgr_base,
 	}
 
 	if (dpp_clock_lowered) {
-		// if clock is being lowered, increase DTO before lowering refclk
-		dcn20_update_clocks_update_dpp_dto(clk_mgr, context);
+		// increase per DPP DTO before lowering global dppclk
+		dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
 		rn_vbios_smu_set_dppclk(clk_mgr, clk_mgr_base->clks.dppclk_khz);
 	} else {
-		// if clock is being raised, increase refclk before lowering DTO
+		// increase global DPPCLK before lowering per DPP DTO
 		if (update_dppclk || update_dispclk)
 			rn_vbios_smu_set_dppclk(clk_mgr, clk_mgr_base->clks.dppclk_khz);
 		// always update dtos unless clock is lowered and not safe to lower
 		if (new_clocks->dppclk_khz >= dc->current_state->bw_ctx.bw.dcn.clk.dppclk_khz)
-			dcn20_update_clocks_update_dpp_dto(clk_mgr, context);
+			dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
 	}
 
 	if (update_dispclk &&
@@ -409,20 +417,20 @@ void build_watermark_ranges(struct clk_bw_params *bw_params, struct pp_smu_wm_ra
 			continue;
 
 		ranges->reader_wm_sets[num_valid_sets].wm_inst = bw_params->wm_table.entries[i].wm_inst;
-		ranges->reader_wm_sets[num_valid_sets].wm_type = bw_params->wm_table.entries[i].wm_type;;
-		/* We will not select WM based on dcfclk, so leave it as unconstrained */
-		ranges->reader_wm_sets[num_valid_sets].min_drain_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MIN;
-		ranges->reader_wm_sets[num_valid_sets].max_drain_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MAX;
-		/* fclk wil be used to select WM*/
+		ranges->reader_wm_sets[num_valid_sets].wm_type = bw_params->wm_table.entries[i].wm_type;
+		/* We will not select WM based on fclk, so leave it as unconstrained */
+		ranges->reader_wm_sets[num_valid_sets].min_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MIN;
+		ranges->reader_wm_sets[num_valid_sets].max_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MAX;
+		/* dcfclk wil be used to select WM*/
 
 		if (ranges->reader_wm_sets[num_valid_sets].wm_type == WM_TYPE_PSTATE_CHG) {
 			if (i == 0)
-				ranges->reader_wm_sets[num_valid_sets].min_fill_clk_mhz = 0;
+				ranges->reader_wm_sets[num_valid_sets].min_drain_clk_mhz = 0;
 			else {
 				/* add 1 to make it non-overlapping with next lvl */
-				ranges->reader_wm_sets[num_valid_sets].min_fill_clk_mhz = bw_params->clk_table.entries[i - 1].fclk_mhz + 1;
+				ranges->reader_wm_sets[num_valid_sets].min_drain_clk_mhz = bw_params->clk_table.entries[i - 1].dcfclk_mhz + 1;
 			}
-			ranges->reader_wm_sets[num_valid_sets].max_fill_clk_mhz = bw_params->clk_table.entries[i].fclk_mhz;
+			ranges->reader_wm_sets[num_valid_sets].max_drain_clk_mhz = bw_params->clk_table.entries[i].dcfclk_mhz;
 
 		} else {
 			/* unconstrained for memory retraining */
@@ -578,33 +586,33 @@ struct wm_table lpddr4_wm_table = {
 		{
 			.wm_inst = WM_A,
 			.wm_type = WM_TYPE_PSTATE_CHG,
-			.pstate_latency_us = 23.84,
-			.sr_exit_time_us = 12.5,
-			.sr_enter_plus_exit_time_us = 17.0,
+			.pstate_latency_us = 11.65333,
+			.sr_exit_time_us = 5.32,
+			.sr_enter_plus_exit_time_us = 6.38,
 			.valid = true,
 		},
 		{
 			.wm_inst = WM_B,
 			.wm_type = WM_TYPE_PSTATE_CHG,
-			.pstate_latency_us = 23.84,
-			.sr_exit_time_us = 12.5,
-			.sr_enter_plus_exit_time_us = 17.0,
+			.pstate_latency_us = 11.65333,
+			.sr_exit_time_us = 9.82,
+			.sr_enter_plus_exit_time_us = 11.196,
 			.valid = true,
 		},
 		{
 			.wm_inst = WM_C,
 			.wm_type = WM_TYPE_PSTATE_CHG,
-			.pstate_latency_us = 23.84,
-			.sr_exit_time_us = 12.5,
-			.sr_enter_plus_exit_time_us = 17.0,
+			.pstate_latency_us = 11.65333,
+			.sr_exit_time_us = 9.89,
+			.sr_enter_plus_exit_time_us = 11.24,
 			.valid = true,
 		},
 		{
 			.wm_inst = WM_D,
 			.wm_type = WM_TYPE_PSTATE_CHG,
-			.pstate_latency_us = 23.84,
-			.sr_exit_time_us = 12.5,
-			.sr_enter_plus_exit_time_us = 17.0,
+			.pstate_latency_us = 11.65333,
+			.sr_exit_time_us = 9.748,
+			.sr_enter_plus_exit_time_us = 11.102,
 			.valid = true,
 		},
 	}
@@ -691,7 +699,6 @@ void rn_clk_mgr_construct(
 {
 	struct dc_debug_options *debug = &ctx->dc->debug;
 	struct dpm_clocks clock_table = { 0 };
-	struct clk_state_registers_and_bypass s = { 0 };
 
 	clk_mgr->base.ctx = ctx;
 	clk_mgr->base.funcs = &dcn21_funcs;
@@ -711,7 +718,6 @@ void rn_clk_mgr_construct(
 	if (IS_FPGA_MAXIMUS_DC(ctx->dce_environment)) {
 		dcn21_funcs.update_clocks = dcn2_update_clocks_fpga;
 		clk_mgr->base.dentist_vco_freq_khz = 3600000;
-		clk_mgr->base.dprefclk_khz = 600000;
 	} else {
 		struct clk_log_info log_info = {0};
 
@@ -722,24 +728,16 @@ void rn_clk_mgr_construct(
 		if (clk_mgr->base.dentist_vco_freq_khz == 0)
 			clk_mgr->base.dentist_vco_freq_khz = 3600000;
 
-		rn_dump_clk_registers(&s, &clk_mgr->base, &log_info);
-		/* Convert dprefclk units from MHz to KHz */
-		/* Value already divided by 10, some resolution lost */
-		clk_mgr->base.dprefclk_khz = s.dprefclk * 1000;
-
-		/* in case we don't get a value from the register, use default */
-		if (clk_mgr->base.dprefclk_khz == 0) {
-			ASSERT(clk_mgr->base.dprefclk_khz == 600000);
-			clk_mgr->base.dprefclk_khz = 600000;
-		}
-
 		if (ctx->dc_bios->integrated_info->memory_type == LpDdr4MemType) {
 			rn_bw_params.wm_table = lpddr4_wm_table;
 		} else {
 			rn_bw_params.wm_table = ddr4_wm_table;
 		}
+		/* Saved clocks configured at boot for debug purposes */
+		rn_dump_clk_registers(&clk_mgr->base.boot_snapshot, &clk_mgr->base, &log_info);
 	}
 
+	clk_mgr->base.dprefclk_khz = 600000;
 	dce_clock_read_ss_info(clk_mgr);