From: Xiaodong Yan <[email protected]> [why] power off dp receiver directly cause garbage during hw init
[how] blank dp stream and then power off receiver Signed-off-by: Xiaodong Yan <[email protected]> Reviewed-by: Tony Cheng <[email protected]> Acked-by: Rodrigo Siqueira <[email protected]> --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c index dad95f1a7041..079a33a96f90 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c @@ -1328,6 +1328,14 @@ void dcn10_init_hw(struct dc *dc) uint8_t dpcd_power_state = '\0'; enum dc_status status = DC_ERROR_UNEXPECTED; + /* blank all dp streams before power off receiver, + * this should only impact DP + */ + for (i = 0; i < dc->res_pool->stream_enc_count; i++) { + dc->res_pool->stream_enc[i]->funcs->dp_blank( + dc->res_pool->stream_enc[i]); + } + for (i = 0; i < dc->link_count; i++) { if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT) continue; -- 2.26.0 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
