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| author | Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> | 2023-06-29 10:35:59 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-07-18 14:41:23 -0400 |
| commit | 2387ccf43e3c6cb5dbd757c5ef410cca9f14b971 (patch) | |
| tree | 2ae023cda979aed9bce0f395608b48e589eea1d0 /drivers | |
| parent | 2a9482e55968ed7368afaa9c2133404069117320 (diff) | |
| download | linux-stable-2387ccf43e3c6cb5dbd757c5ef410cca9f14b971.tar.gz linux-stable-2387ccf43e3c6cb5dbd757c5ef410cca9f14b971.tar.bz2 linux-stable-2387ccf43e3c6cb5dbd757c5ef410cca9f14b971.zip | |
drm/amd/display: Keep PHY active for DP displays on DCN31
[Why & How]
Port of a change that went into DCN314 to keep the PHY enabled
when we have a connected and active DP display.
The PHY can hang if PHY refclk is disabled inadvertently.
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Josip Pavic <josip.pavic@amd.com>
Acked-by: Alan Liu <haoping.liu@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c index 7ccd96959256..3db4ef564b99 100644 --- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c +++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn31/dcn31_clk_mgr.c @@ -87,6 +87,11 @@ static int dcn31_get_active_display_cnt_wa( stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK || stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK) tmds_present = true; + + /* Checking stream / link detection ensuring that PHY is active*/ + if (dc_is_dp_signal(stream->signal) && !stream->dpms_off) + display_count++; + } for (i = 0; i < dc->link_count; i++) { |