From: Bhawanpreet Lakha <Bhawanpreet.Lakha@xxxxxxx> [Why] On some linux based OS, the hotplug->HDCP start takes longer than 4seconds (by ~100ms) This is due to the HDCP delay (3 sec) so we only have 1 second to hotplug->stream enablement, which is not enough for certain OS configs. [How] Change the Delay to 0 seconds. From testing it seems like 0 Seconds can pass 1.x and 2.x compliances Reviewed-by: Aurabindo Pillai <Aurabindo.Pillai@xxxxxxx> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx> Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@xxxxxxx> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c index 6202e31c7e3a..a7fd98f57f94 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c @@ -495,7 +495,7 @@ static void update_config(void *handle, struct cp_psp_stream_config *config) link->dp.mst_enabled = config->mst_enabled; link->dp.usb4_enabled = config->usb4_enabled; display->adjust.disable = MOD_HDCP_DISPLAY_DISABLE_AUTHENTICATION; - link->adjust.auth_delay = 3; + link->adjust.auth_delay = 0; link->adjust.hdcp1.disable = 0; conn_state = aconnector->base.state; -- 2.35.1
