* [PATCH] drm/amd/display: Fix fclk idle state
@ 2019-01-29 20:16 Roman.Li-5C7GfCeVMHo
[not found] ` <20190129201653.4834-1-Roman.Li-5C7GfCeVMHo@public.gmane.org>
0 siblings, 1 reply; 2+ messages in thread
From: Roman.Li-5C7GfCeVMHo @ 2019-01-29 20:16 UTC (permalink / raw)
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW, Feifei.Xu-5C7GfCeVMHo,
Evan.Quan-5C7GfCeVMHo
Cc: Carl.Chan-5C7GfCeVMHo, harry.wentland-5C7GfCeVMHo, Roman Li
From: Roman Li <Roman.Li@amd.com>
[Why]
The earlier change 'Fix 6x4K displays' led to fclk value
idling at higher DPM level.
[How]
Apply the fix only to respective multi-display configuration.
Signed-off-by: Roman Li <Roman.Li@amd.com>
---
drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c
index 3c52a4fc921d..bbe051736a18 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c
@@ -627,7 +627,15 @@ static void dce11_pplib_apply_display_requirements(
dc,
context->bw.dce.sclk_khz);
- pp_display_cfg->min_dcfclock_khz = pp_display_cfg->min_engine_clock_khz;
+ /*
+ * As workaround for >4x4K lightup set dcfclock to min_engine_clock value.
+ * This is not required for less than 5 displays,
+ * thus don't request decfclk in dc to avoid impact
+ * on power saving.
+ *
+ */
+ pp_display_cfg->min_dcfclock_khz = (context->stream_count > 4)?
+ pp_display_cfg->min_engine_clock_khz : 0;
pp_display_cfg->min_engine_clock_deep_sleep_khz
= context->bw.dce.sclk_deep_sleep_khz;
--
2.17.1
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amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] drm/amd/display: Fix fclk idle state
[not found] ` <20190129201653.4834-1-Roman.Li-5C7GfCeVMHo@public.gmane.org>
@ 2019-01-29 20:55 ` Deucher, Alexander
0 siblings, 0 replies; 2+ messages in thread
From: Deucher, Alexander @ 2019-01-29 20:55 UTC (permalink / raw)
To: Li, Roman, amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW, Xu, Feifei,
Quan, Evan
Cc: Chan, Carl, Wentland, Harry
[-- Attachment #1.1: Type: text/plain, Size: 2151 bytes --]
Acked-by: Alex Deucher <alexander.deucher-5C7GfCeVMHo@public.gmane.org>
________________________________
From: amd-gfx <amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org> on behalf of Roman.Li@amd.com <Roman.Li-5C7GfCeVMHo@public.gmane.org>
Sent: Tuesday, January 29, 2019 3:16:53 PM
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org; Xu, Feifei; Quan, Evan
Cc: Chan, Carl; Wentland, Harry; Li, Roman
Subject: [PATCH] drm/amd/display: Fix fclk idle state
From: Roman Li <Roman.Li-5C7GfCeVMHo@public.gmane.org>
[Why]
The earlier change 'Fix 6x4K displays' led to fclk value
idling at higher DPM level.
[How]
Apply the fix only to respective multi-display configuration.
Signed-off-by: Roman Li <Roman.Li-5C7GfCeVMHo@public.gmane.org>
---
drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c
index 3c52a4fc921d..bbe051736a18 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clk_mgr.c
@@ -627,7 +627,15 @@ static void dce11_pplib_apply_display_requirements(
dc,
context->bw.dce.sclk_khz);
- pp_display_cfg->min_dcfclock_khz = pp_display_cfg->min_engine_clock_khz;
+ /*
+ * As workaround for >4x4K lightup set dcfclock to min_engine_clock value.
+ * This is not required for less than 5 displays,
+ * thus don't request decfclk in dc to avoid impact
+ * on power saving.
+ *
+ */
+ pp_display_cfg->min_dcfclock_khz = (context->stream_count > 4)?
+ pp_display_cfg->min_engine_clock_khz : 0;
pp_display_cfg->min_engine_clock_deep_sleep_khz
= context->bw.dce.sclk_deep_sleep_khz;
--
2.17.1
_______________________________________________
amd-gfx mailing list
amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
[-- Attachment #1.2: Type: text/html, Size: 4121 bytes --]
[-- Attachment #2: Type: text/plain, Size: 154 bytes --]
_______________________________________________
amd-gfx mailing list
amd-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2019-01-29 20:16 [PATCH] drm/amd/display: Fix fclk idle state Roman.Li-5C7GfCeVMHo
[not found] ` <20190129201653.4834-1-Roman.Li-5C7GfCeVMHo@public.gmane.org>
2019-01-29 20:55 ` Deucher, Alexander
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