On 2023-12-14 16:12, Mario Limonciello wrote:
> Some issues have been raised that appear to be tied to PSR-SU.
> To allow users to confirm they're tied to PSR-SU without turning off
> PSR entirely introduce a new debug mask:
>
> amdgpu.dcdebugmask=0x200
>
> Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx>
Harry
> ---
> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c | 3 +++
> drivers/gpu/drm/amd/include/amd_shared.h | 1 +
> 2 files changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
> index 08ce3bb8f640..1f08c6564c3b 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
> @@ -51,6 +51,9 @@ static bool link_supports_psrsu(struct dc_link *link)
> !link->dpcd_caps.psr_info.psr2_su_y_granularity_cap)
> return false;
>
> + if (amdgpu_dc_debug_mask & DC_DISABLE_PSR_SU)
> + return false;
> +
> return dc_dmub_check_min_version(dc->ctx->dmub_srv->dmub);
> }
>
> diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h
> index ade68972ec28..5cad456f2e10 100644
> --- a/drivers/gpu/drm/amd/include/amd_shared.h
> +++ b/drivers/gpu/drm/amd/include/amd_shared.h
> @@ -256,6 +256,7 @@ enum DC_DEBUG_MASK {
> DC_DISABLE_MPO = 0x40,
> DC_ENABLE_DPIA_TRACE = 0x80,
> DC_ENABLE_DML2 = 0x100,
> + DC_DISABLE_PSR_SU = 0x200,
> };
>
> enum amd_dpm_forced_level;
