From: Nicholas Kazlauskas Date: Thu, 29 Jun 2023 14:35:59 +0000 (-0400) Subject: drm/amd/display: Keep PHY active for DP displays on DCN31 X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9c553d00c56a6785acb9c6b7318bae630312a787;p=linux.git 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 Cc: Alex Deucher Cc: stable@vger.kernel.org Reviewed-by: Josip Pavic Acked-by: Alan Liu Signed-off-by: Nicholas Kazlauskas Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- 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 7ccd96959256d..3db4ef564b997 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++) {