[Why] There is a use case that link loss happens accidentally, and we need to recover that link loss as soon as possible. Under this circumstance, DP PHY will perform link training, then try to recover the link that's just lost.
However, if link PHY is disabled by code here, then DP display will never come back again. [How] Don't disable DP transmitter and its encoder, even if link loss is detected. Signed-off-by: Zhan Liu <[email protected]> --- drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c index 38b0f4347383..49f48d432923 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c @@ -2876,7 +2876,6 @@ bool dc_link_handle_hpd_rx_irq(struct dc_link *link, union hpd_irq_data *out_hpd return false; previous_link_settings = link->cur_link_settings; - dp_disable_link_phy(link, pipe_ctx->stream->signal); perform_link_training_with_retries(&previous_link_settings, true, LINK_TRAINING_ATTEMPTS, -- 2.17.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
