[PATCH] drm/amdgpu/display: change pipe policy for DCN 2.1

[Alex Deucher]

@Wheeler, Daniel
 @Siqueira, Rodrigo were you able to repro this?  Any ideas?  Any
downsides to picking this up for now?

Alex

On Wed, Mar 23, 2022 at 5:18 PM Benjamin Marty <info at benjaminmarty.ch> wrote:
>
> Fixes crash on MST Hub disconnect.
>
> Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1849
> Fixes: ee2698cf79cc ("drm/amd/display: Changed pipe split policy to allow for multi-display pipe split")
> Signed-off-by: Benjamin Marty <info at benjaminmarty.ch>
> ---
>  drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> index e5cc6bf45743..ca1bbc942fd4 100644
> --- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> +++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c
> @@ -873,7 +873,7 @@ static const struct dc_debug_options debug_defaults_drv = {
>                 .clock_trace = true,
>                 .disable_pplib_clock_request = true,
>                 .min_disp_clk_khz = 100000,
> -               .pipe_split_policy = MPC_SPLIT_DYNAMIC,
> +               .pipe_split_policy = MPC_SPLIT_AVOID_MULT_DISP,
>                 .force_single_disp_pipe_split = false,
>                 .disable_dcc = DCC_ENABLE,
>                 .vsr_support = true,
> --
> 2.35.1
>