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drm/amd/display: increase dcn315 pstate change latency

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[Why & How]
Update after new measurment came in

Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dmytro Laktyushkin 2022-07-27 13:02:44 -04:00 committed by Alex Deucher
parent ed2770038b
commit 63423cf109
1 changed files with 14 additions and 8 deletions
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22
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn315/dcn315_clk_mgr.c
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@ -51,6 +51,9 @@
#define TO_CLK_MGR_DCN315(clk_mgr)\
container_of(clk_mgr, struct clk_mgr_dcn315, base)
#define UNSUPPORTED_DCFCLK 10000000
#define MIN_DPP_DISP_CLK 100000
static int dcn315_get_active_display_cnt_wa(
struct dc *dc,
struct dc_state *context)
@ -152,6 +155,9 @@ static void dcn315_update_clocks(struct clk_mgr *clk_mgr_base,
}
}
/* Lock pstate by requesting unsupported dcfclk if change is unsupported */
if (!new_clocks->p_state_change_support)
new_clocks->dcfclk_khz = UNSUPPORTED_DCFCLK;
if (should_set_clock(safe_to_lower, new_clocks->dcfclk_khz, clk_mgr_base->clks.dcfclk_khz)) {
clk_mgr_base->clks.dcfclk_khz = new_clocks->dcfclk_khz;
dcn315_smu_set_hard_min_dcfclk(clk_mgr, clk_mgr_base->clks.dcfclk_khz);
@ -165,10 +171,10 @@ static void dcn315_update_clocks(struct clk_mgr *clk_mgr_base,
// 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 (new_clocks->dispclk_khz < 100000)
new_clocks->dispclk_khz = 100000;
if (new_clocks->dppclk_khz < MIN_DPP_DISP_CLK)
new_clocks->dppclk_khz = MIN_DPP_DISP_CLK;
if (new_clocks->dispclk_khz < MIN_DPP_DISP_CLK)
new_clocks->dispclk_khz = MIN_DPP_DISP_CLK;
}
if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr->base.clks.dppclk_khz)) {
@ -281,7 +287,7 @@ static struct wm_table ddr5_wm_table = {
{
.wm_inst = WM_A,
.wm_type = WM_TYPE_PSTATE_CHG,
.pstate_latency_us = 64.0,
.pstate_latency_us = 129.0,
.sr_exit_time_us = 11.5,
.sr_enter_plus_exit_time_us = 14.5,
.valid = true,
@ -289,7 +295,7 @@ static struct wm_table ddr5_wm_table = {
{
.wm_inst = WM_B,
.wm_type = WM_TYPE_PSTATE_CHG,
.pstate_latency_us = 64.0,
.pstate_latency_us = 129.0,
.sr_exit_time_us = 11.5,
.sr_enter_plus_exit_time_us = 14.5,
.valid = true,
@ -297,7 +303,7 @@ static struct wm_table ddr5_wm_table = {
{
.wm_inst = WM_C,
.wm_type = WM_TYPE_PSTATE_CHG,
.pstate_latency_us = 64.0,
.pstate_latency_us = 129.0,
.sr_exit_time_us = 11.5,
.sr_enter_plus_exit_time_us = 14.5,
.valid = true,
@ -305,7 +311,7 @@ static struct wm_table ddr5_wm_table = {
{
.wm_inst = WM_D,
.wm_type = WM_TYPE_PSTATE_CHG,
.pstate_latency_us = 64.0,
.pstate_latency_us = 129.0,
.sr_exit_time_us = 11.5,
.sr_enter_plus_exit_time_us = 14.5,
.valid = true,