From a19620ea917b4a080f5e3c923e2c09420099ae3e Mon Sep 17 00:00:00 2001 From: Sung Lee Date: Thu, 30 Jan 2020 11:54:52 -0500 Subject: [PATCH] drm/amd/display: Program self refresh control register on boot [WHY] In headless boot cases, self refresh control registers are not programmed on boot. In certain hybrid graphics cases this may cause cstate entering to get blocked causing a hang. [HOW] Program self refresh control register on boot. Signed-off-by: Sung Lee Reviewed-by: Anthony Koo Acked-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 3 +++ 1 file changed, 3 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 21c7c1b010eca..dad732bb34d53 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 @@ -1356,6 +1356,9 @@ void dcn10_init_hw(struct dc *dc) */ if (dcb->funcs->is_accelerated_mode(dcb) || dc->config.power_down_display_on_boot) { hws->funcs.init_pipes(dc, dc->current_state); + if (dc->res_pool->hubbub->funcs->allow_self_refresh_control) + dc->res_pool->hubbub->funcs->allow_self_refresh_control(dc->res_pool->hubbub, + !dc->res_pool->hubbub->ctx->dc->debug.disable_stutter); } for (i = 0; i < res_pool->audio_count; i++) { -- 2.30.2