From: Sung Lee <sung....@amd.com>
[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 <sung....@amd.com>
Reviewed-by: Anthony Koo <anthony....@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
---
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 21c7c1b010ec..dad732bb34d5 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++) {
--
2.25.1
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