diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c index ef5d0b778a72..5642172e0df8 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c @@ -48,6 +48,8 @@ #include "dc_dmub_srv.h" #include "link_hwss.h" #include "dpcd_defs.h" +#include "inc/dc_link_dp.h" +#include "inc/link_dpcd.h" @@ -529,6 +531,8 @@ void dcn30_init_hw(struct dc *dc) for (i = 0; i < dc->link_count; i++) { if (dc->links[i]->connector_signal != SIGNAL_TYPE_DISPLAY_PORT) continue; + /* DP 2.0 states that LTTPR regs must be read first */ + dp_retrieve_lttpr_cap(dc->links[i]); /* if any of the displays are lit up turn them off */ status = core_link_read_dpcd(dc->links[i], DP_SET_POWER, |