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

[Liu, Zhan]

[Public]

> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Agustin
> Gutierrez
> Sent: 2022/January/28, Friday 6:07 PM
> To: amd-gfx at lists.freedesktop.org; Gutierrez, Agustin
> <Agustin.Gutierrez at amd.com>
> Cc: Gutierrez, Agustin <Agustin.Gutierrez at amd.com>
> Subject: [PATCH] drm/amd/display: Update watermark values for DCN301
>
>     [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.
>
> Signed-off-by: Agustin Gutierrez <agustin.gutierrez at amd.com>

Looks good to me.

Reviewed-by: Zhan Liu <zhan.liu at amd.com>

> ---
>  .../amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c   | 16 ++++++++--------
>  1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git 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
> index 48005def1164..bc4ddc36fe58 100644
> --- 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
> @@ -570,32 +570,32 @@ 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,
>               },
>       }
> --
> 2.25.1