diff options
| author | Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> | 2023-06-29 10:35:59 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-27 08:46:55 +0200 |
| commit | 925bbcdbc4d00985c8ca0f932a1f77d21f1fee6a (patch) | |
| tree | 2131ea5e83c1d609fc4e1ec409b2068a8d083612 /drivers/gpu | |
| parent | 742340371b010b240719c73885d36c82f9a41f5c (diff) | |
drm/amd/display: Keep PHY active for DP displays on DCN31
commit 2387ccf43e3c6cb5dbd757c5ef410cca9f14b971 upstream.
[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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu')
| -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 8f6e6496ea78..5357620627af 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 @@ -81,6 +81,11 @@ 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++) { |