[PATCH 5.16 026/126] drm/amd/display: Update watermark values for DCN301

Greg Kroah-Hartman
2022-02-07T11:49:33Z

From: Agustin Gutierrez <agustin.gutierrez@amd.com>

commit 2d8ae25d233767171942a9fba5fd8f4a620996be upstream.

[Why]
There is underflow / visual corruption DCN301, for high
bandwidth MST DSC configurations such as 2x1440p144 or 2x4k60.

[How]
Use up-to-date watermark values for DCN301.

Reviewed-by: Zhan Liu <zhan.liu@amd.com>
Signed-off-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c | 16 ++++++-------
1 file changed, 8 insertions(+), 8 deletions(-)

--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c
@@ -582,32 +582,32 @@ static struct wm_table lpddr5_wm_table =
.wm_inst = WM_A,
.wm_type = WM_TYPE_PSTATE_CHG,
.pstate_latency_us = 11.65333,
- .sr_exit_time_us = 7.95,
- .sr_enter_plus_exit_time_us = 9,
+ .sr_exit_time_us = 13.5,
+ .sr_enter_plus_exit_time_us = 16.5,
.valid = true,
},
{
.wm_inst = WM_B,
.wm_type = WM_TYPE_PSTATE_CHG,
.pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.82,
- .sr_enter_plus_exit_time_us = 11.196,
+ .sr_exit_time_us = 13.5,
+ .sr_enter_plus_exit_time_us = 16.5,
.valid = true,
},
{
.wm_inst = WM_C,
.wm_type = WM_TYPE_PSTATE_CHG,
.pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.89,
- .sr_enter_plus_exit_time_us = 11.24,
+ .sr_exit_time_us = 13.5,
+ .sr_enter_plus_exit_time_us = 16.5,
.valid = true,
},
{
.wm_inst = WM_D,
.wm_type = WM_TYPE_PSTATE_CHG,
.pstate_latency_us = 11.65333,
- .sr_exit_time_us = 9.748,
- .sr_enter_plus_exit_time_us = 11.102,
+ .sr_exit_time_us = 13.5,
+ .sr_enter_plus_exit_time_us = 16.5,
.valid = true,
},
}