diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c | 41 |
1 files changed, 27 insertions, 14 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 7ae4c06232dd..ab267ddd4abe 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 @@ -46,6 +46,7 @@ /* Constants */ #define LPDDR_MEM_RETRAIN_LATENCY 4.977 /* Number obtained from LPDDR4 Training Counter Requirement doc */ +#define SMU_VER_55_51_0 0x373300 /* SMU Version that is able to set DISPCLK below 100MHz */ /* Macros */ @@ -151,6 +152,12 @@ 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; @@ -399,7 +406,7 @@ void rn_init_clocks(struct clk_mgr *clk_mgr) clk_mgr->clks.pwr_state = DCN_PWR_STATE_UNKNOWN; } -void build_watermark_ranges(struct clk_bw_params *bw_params, struct pp_smu_wm_range_sets *ranges) +static void build_watermark_ranges(struct clk_bw_params *bw_params, struct pp_smu_wm_range_sets *ranges) { int i, num_valid_sets; @@ -412,19 +419,19 @@ void build_watermark_ranges(struct clk_bw_params *bw_params, struct pp_smu_wm_ra 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*/ + /* 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 */ @@ -459,16 +466,15 @@ void build_watermark_ranges(struct clk_bw_params *bw_params, struct pp_smu_wm_ra static void rn_notify_wm_ranges(struct clk_mgr *clk_mgr_base) { struct dc_debug_options *debug = &clk_mgr_base->ctx->dc->debug; - struct pp_smu_wm_range_sets ranges = {0}; struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base); struct pp_smu_funcs *pp_smu = clk_mgr->pp_smu; if (!debug->disable_pplib_wm_range) { - build_watermark_ranges(clk_mgr_base->bw_params, &ranges); + build_watermark_ranges(clk_mgr_base->bw_params, &clk_mgr_base->ranges); /* Notify PP Lib/SMU which Watermarks to use for which clock ranges */ if (pp_smu && pp_smu->rn_funcs.set_wm_ranges) - pp_smu->rn_funcs.set_wm_ranges(&pp_smu->rn_funcs.pp_smu, &ranges); + pp_smu->rn_funcs.set_wm_ranges(&pp_smu->rn_funcs.pp_smu, &clk_mgr_base->ranges); } } @@ -498,7 +504,7 @@ static struct clk_mgr_funcs dcn21_funcs = { .notify_wm_ranges = rn_notify_wm_ranges }; -struct clk_bw_params rn_bw_params = { +static struct clk_bw_params rn_bw_params = { .vram_type = Ddr4MemType, .num_channels = 1, .clk_table = { @@ -538,7 +544,7 @@ struct clk_bw_params rn_bw_params = { }; -struct wm_table ddr4_wm_table = { +static struct wm_table ddr4_wm_table = { .entries = { { .wm_inst = WM_A, @@ -575,7 +581,7 @@ struct wm_table ddr4_wm_table = { } }; -struct wm_table lpddr4_wm_table = { +static struct wm_table lpddr4_wm_table = { .entries = { { .wm_inst = WM_A, @@ -715,6 +721,13 @@ void rn_clk_mgr_construct( } else { struct clk_log_info log_info = {0}; + clk_mgr->smu_ver = rn_vbios_smu_get_smu_version(clk_mgr); + + /* SMU Version 55.51.0 and up no longer have an issue + * that needs to limit minimum dispclk */ + if (clk_mgr->smu_ver >= SMU_VER_55_51_0) + debug->min_disp_clk_khz = 0; + /* TODO: Check we get what we expect during bringup */ clk_mgr->base.dentist_vco_freq_khz = get_vco_frequency_from_reg(clk_mgr); |