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drm/amd/display: enable dchub request limit for DCN 3.2.x

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[why]
HW recommend we enable this for better DF QoS for DCN 3.2.x

[how]
Add interfaces to hubbub to program register
Add initialization as part of init_hw
Add default settings for DCN 3.2.x
Add registry override for debug/tuning

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Jun Lei <jun.lei@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jun Lei
2022-11-02 15:19:37 -04:00
committed by Alex Deucher
parent 2ec3a0f0f1
commit d97fd7a07b
8 changed files with 37 additions and 4 deletions
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3
drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hwseq.c
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@@ -984,6 +984,9 @@ void dcn32_init_hw(struct dc *dc)
if (dc->res_pool->hubbub->funcs->init_crb)
dc->res_pool->hubbub->funcs->init_crb(dc->res_pool->hubbub);
if (dc->res_pool->hubbub->funcs->set_request_limit && dc->config.sdpif_request_limit_words_per_umc > 0)
dc->res_pool->hubbub->funcs->set_request_limit(dc->res_pool->hubbub, dc->ctx->dc_bios->vram_info.num_chans, dc->config.sdpif_request_limit_words_per_umc);
// Get DMCUB capabilities
if (dc->ctx->dmub_srv) {
dc_dmub_srv_query_caps_cmd(dc->ctx->dmub_srv->dmub);